tankless water heater travel trailer

Best RV Tankless Water Heater Options (+ Installation Tips!)

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Having limited hot water is one of the biggest complaints about traveling and living in an RV.

Most larger standard RV water heaters barely even hold enough water for just one person to enjoy a full-length hot shower. But don’t we all want to relax and refresh with a hot shower after a day of outdoor adventuring?

Well, these days, you can have unlimited, on-demand hot water with an RV tankless water heater!

What Is An RV Tankless Water Heater?

Standard water heaters are heated water storage tanks that use excessive energy to keep the water inside at a specific temperature.

On the other hand, RV tankless water heaters use instantaneous heat exchange technology and work on a relatively simple and efficient principle.

With a tankless water heater, when you demand hot water at the faucet, cold water begins to flow into the water heater from the inlet. The moving water activates gas burners that instantly heat the water as it flows toward the open faucet without storing and heating water in the tank in advance.

Tankless water heaters are increasingly popular among homeowners because heating water on-demand saves energy compared to continuously heating a water tank to a specific temperature.

Factory-installed tankless water heater options have been available from international RV manufacturers for nearly 30 years and in the US for over a decade. The technology dramatically improved during that time, and the cost significantly dropped!

So, you can have never-ending hot water, even in your camper (as long as you have water, gas, & a 12V power supply)!

RV tankless water heaters also have the additional benefits of being much smaller and lighter than a metal tank of hot water, saving precious space and weight on your rig!

For those of us with older rigs or RV renovation projects, we now have reliable tankless water heater options to replace our outdated, inefficient, heavy, repaired-many-times-and-still-leaking standard RV water heaters!

Understanding Regulating Water Temperature

The size of an RV tankless water heater is measured by two output capacities:

• BTUs (British Thermal Units): A measure of heat output.
• GPMs (Gallons Per Minute): A measure of water output.

According to the mathematical relationships among water pressure (PSI), water flow rate (GPM), and heat exchange (BTU), an RV tankless water heater capable of producing 40,000-50,000 BTUs at a rate of 2-4 GPM should be more than enough in most campers (with a maximum PSI of 50).

First-generation RV tankless water heaters were particularly susceptible to variations in water flow and maintaining consistent, safe hot water temperatures.

However, those concerns have been addressed by incorporating microprocessors that monitor water flow and temperature. They automatically adjust heat output to maintain the desired output water temperature.

Functioning with Standard Water Heaters

Typically, we keep our standard water heaters at an extremely high temperature and manually alter the water’s temperature at the faucet by mixing in cold water.

Because a standard tanked water heater stores and heats a finite amount of water in a pressurized reservoir, it creates a hot water system that is essentially independent of cold water flow.

Thus, we can proactively and incrementally control water temperature at the faucet by adjusting the amount of water flowing from either hot or cold taps because they come from independently pressurized sources.

Functioning with Tankless Water Heaters

On the other hand, a tankless water heater creates a thermodynamic pathway that is activated by the forward momentum of pressurized cold water flowing through the heating system due to an open hot water tap.

When you additionally open a  cold  water tap, you re-route some cold water flow directly to the faucet. Doing so reduces the amount of water flowing into the heating system.

The sudden decrease in water flow can confuse a tankless water heater, causing it to shut off and leaving you screaming in an icy shower.

So, instead of trying to control the water temperature at the faucet, you must learn how to control it at the heat source by adjusting the desired output temperature setting. 

It may take some trial and error to determine how to best achieve your ideal hot water temperature with a new RV tankless water heater. Many people suggest setting your tankless to your ideal hot water temperature (for showering) and then only using the hot water tap.

Most RV tankless water heaters have intelligent control panels to monitor and adjust such settings comfortably inside your RV.

Why Would You Want To Switch To a Tankless RV Water Heater?

A standard travel trailer water heater can last many years when properly maintained. So, you may only consider switching to a tankless RV water heater once the old one becomes problematic.

Eventually, though, most people agree that the energy savings and endless hot water are enough to convert them to a tankless RV water heater purchase. Especially if it’s time for an upgrade.

Additionally, the cost and labor of installing an RV tankless water heater are now quite similar to a standard RV water heater replacement!

Therefore, the pros include:

• They are efficient —no energy is wasted heating water in a holding tank.
• You’ll have unlimited hot water on-demand and never have to wait for a water tank to refill and reheat again! You can take a real shower in your camper!
• You’ll have a reduction in size and weight. This option has a smaller footprint and weighs much less than a tank full of water.
• Less maintenance is involved. Since it doesn’t constantly have to hold hot water, there is much less buildup of damaging scale or rust.

Common Complaints About Tankless Water Heaters in Campers

Lack of electric tankless water heater options.

Unfortunately, no electric tankless water heater options are currently available for RVs because of the power required to transfer 40,000 BTUs of heat to water at a 2-4 GPM rate. (At least 240 volts). All RV tankless water heaters rely on propane.

For many RV lifers, a propane-powered water heater is just another off-grid appliance. Still, it can be inconvenient not to have an electric water heating option if you’re paying for full hookups.

Delay in Obtaining Hot Water

Many tankless water heaters are marketed as “instant” hot water. However, a more accurate description would be “endless” or “on-demand” because the water in your outdoor RV pipes is cold, and that cold water must flush before you experience hot water.

Depending on temperature, pressure, pipe size, and distance from the water heater to the faucet, the water may take at least 30 seconds to run hot.

If you’re boondocking or conserving water, consider methods to capture and reuse the wasted water that comes out while waiting for the hot water flow to arrive at the faucet.

Can I DIY Install A Tankless Hot Water Heater In My RV?

Yes! Many RV tankless water heater manufacturers design them to easily retrofit standard RV water heater compartments and match connection locations.

However, you may have to make a few adjustments to fully secure the smaller tankless water heater in the standard space. But for the most part, it should be relatively easy to swap your old RV water heater with a tankless one on your own (unless a purchase agreement or product warranty requires professional installation).

Best RV Tankless Water Heater Options For Every Budget

Top of the budget option:.

At the top of the list, the best and most expensive RV tankless water heater system is the  Truma  AquaGo.

This option costs about $1200.

The Truma Group has been an international RV heating, cooling, and water system innovator for 75 years. Additionally, they have been in the American RV market for ten years.

In fact, their heat exchange technology (in 1976) was the first hot water system ever available in RVs. (Learn about the incredible history of Truma   here ).

Note: All Truma systems must be installed by one of their certified technicians.

Truma AquaGo comfort plus

• It has hybrid technology with a temperature stabilizer. It uses a small hot-cold water mixing vessel to maintain an output temperature of 120*F (like standard tanked water heaters) so you can adjust the water temperature at the faucet.
• Depending on input water flow and temperature, microprocessors automatically adjust burners from 20,000 BTU to 60,000 BTU.
• The burner activates with water flow as low as 0.4 GPM.
• It has a proprietary decalcification system.
• Optional electric antifreeze kit.

Middle Price Point Options:

US RV manufacturers that offer pre-installed tankless water heater options generally choose from Furrion , Girard (both Lippert brands), or Suburban ( Airxcel ).

All are leading manufacturers of high-quality OEM RV appliances.

Furthermore, their replacement and retrofit tankless water heaters range in price from $600-$800.

Suburban is an excellent option with a nice warranty if you purchase it directly from the company and have it professionally installed.

GIRARD Tankless RV Water Heater

• POWERFUL PERFORMANCE — At 42,000 BTUs, this continuous hot water heater provides optimal performance for RV plumbing. The quiet, brushless motor runs on 12V power that operates at less than three amps for a nearly noiseless operation
• 42,000 BTUs, providing “optimal performance for RV plumbing.”
• 12V DC brushless motor.
• Microprocessors monitor cold water input temperature, flow rate, and hot water output temperature to regulate the gas burner and maintain water temperature.
• It comes with an interior wall-mounted digital control panel.
• Freeze protection.
• Adjustable exhaust vent.
• Access door not included.

Furrion® RV Tankless Gas 60,000 BTU Water Heater

• High Heating Power: 60K BTU heating power & a 2.4GPM capacity, Furrion RV Gas Water Heater will deliver hot water on demand at consistent temperature even when the ambient temperature drops to 32ºF.
• 60,000 BTUs – quickly heats even super cold water.
• Patented Vortex technology mixes hot and cold water flowing through burners to maintain a stable temperature.
• Advanced safety features – pressure relief valve, over temperature protection, automatic shut off, blower block protection.
• It has patented VibrationSmart technology to withstand travel.
• It requires a 12V converter.
• It will retrofit standard 4/6 gallon RV water heater compartments.

Budget Options:

If you shop on Amazon, you will also find several slightly cheaper made-in-China brands of replacement RV tankless water heaters. These are designed to retrofit standard RV water heater installations easily.

Prices for these units range from $500 – $600.

The most noteworthy of these brands are Fogatti and Ranein . 

Instashower 6

• Optimum Performance — The RV water heater needs to be connected to 12-volt DC power and propane. Inlet and outlet water connections are 1/2“ NPT, gas inlet is 5/8" UNF. No special propane gas lines or special plumbing is required. One is enough to provide the entire RV with hot water. It is easy to operate, turn on the hot water and mix the cold water to reach the desired temperature to enjoy instant and endless hot water.
• 42,000 BTU.
• It has an intelligent remote panel to monitor and control the water heater from inside the RV.

Instashower 8 Plus

• 【Unprecedented experience】The high altitude suitability mode allows the machine to run smoothly even when driving the caravan to the high Denver plateau at 9,800 feet. Staged combustion technology, which controls the amount of flame in summer, prevents the water from getting too hot and saves the limited propane gas available for caravan travel.
• 55,000 BTU.
• High altitude mode.
• The access door is available in various sizes and colors.
• This model has great reviews, especially about excellent customer service.

Instashower 8 Pro

• 【Unprecedented experience】The high altitude suitability mode enables the machine to operate smoothly even when driving the caravan to the high Denver plateau at 9,800 feet. The staged combustion technology controls the flame intensity in summer, prevents the water from getting too hot, and conserves the limited propane gas available for caravan travel.
• This model has the addition of a small mixing tank for more consistent control over water temperature at the faucet. 

ExploreFlow

• 【We've upgraded.】On top of the original. We have upgraded the multi-function remote control. You can view gas usage, voltage, GPM, does anti-freeze device activates, and high altitude available
• 65,000 BTU.
• Quiet 12V motor.
• It also has a small mixing tank for more consistent control over water temperature at the faucet.
• Staged, deep-row combustion.
• Vibration resistance.
• Access door included.

ExploreFlow Dual+

• 【2nd Generation Upgrade】New external water outlet can be directly connected to the shower (already included). From now on, you can have hot water outside the RV. You can wash your dog and rinse the mud on your body. Built-in mixing tank, no overheating of water due to brief opening and closing
• This model includes an outdoor shower attachment.

ExploreFlow Altitude+

• 【High Altitude Upgrade】This model is a high altitude model. It can be used up to 9800 feet above sea level. You are able to adjust its burn yourself depending on the altitude you are at. Thus achieving the best working conditions for you. Please contact us if you need adjustments
• High altitude model.
• You can manually adjust BTU output, but you must call the company to make adjustments.

Cheapest Option:

Finally, there are the “portable” camper tankless water heaters.

These are the cheapest, most versatile options, starting around $200.

These tankless water heaters are propane-fueled, but the igniter is not hard-wired to your 12V DC system. They are not designed to retrofit into your RV water heater compartment or remain hooked up while traveling. Instead, they are mounted vertically or hung outside because of their simplistic exhaust chimneys (ventilation requirements).

Final Tips For Installing A New RV Water Heater

Look at more than just the max flow rate. Also, keep the minimum flow rate in mind.

You want your water heater to work with variable water pressure (different RV parks, water pumps, etc.), especially when trying to conserve water. However, you also still want your water flow rate to be enough to turn it on.

Get to know your space!

First, measure and check for any areas needing repair (dirt, rust, holes).

Then also, label your plumbing. There are several loops and valves that can quickly complicate things (ex., hot water inlet and outlet, city water, fresh tank water, water pump inlet and outlet, drain valves, water heater bypass valve, and winterizing valves.)

Lastly, compare the location of connections on the old water heater to those on the new one to determine what plumbing or gas supplies are needed to connect the tankless water heater to your RV plumbing securely.

Know the size and thread type of all your fittings.  

Even if you don’t know what NPT, GHT, compression, or flare means, you should at least note the size and thread of your fittings and tubing or take them with you to the hardware store. 

Thinking About Making More Changes in Your RV Shower? Get Inspired:

• 8 Awesome RV Shower Makeover DIY Ideas
• DIY: How to Add (Removable) Walls to Shower Shelves
• Why Is My RV Shower Turning Yellow? How to Fix a Yellow Camper Shower

Kristin and Ryan, the Wandering Wilsons, are award-winning photographers, avid rockhounds, and offer adventure planning services. They are based in Utah and live in a 2006 Winnebago Adventurer.

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Best RV Tankless Water Heater for On-Demand Hot Water

Published on November 6th, 2019 by Brian Newman

There’s nothing better than the feeling of hot clean water washing away all the dirt and stress from a whole day of trekking, hiking or camping. But what happens if your standard hot water tank runs out of those precious gallons of water? You’ll be stuck in disappointment. Thankfully, tankless water heaters were invented.

Hot water is an essential part of a full RV experience. It spells the difference between a casual trip to the outdoors, and a bigger commitment to living out in the woods. For years, people were settling for heating water and holding it in a limited tank. The invention of the electric tankless water heater by Stiebel-Elton changed the game for houses, hotels, and premium RVs and campers. I know I’m still thanking him today.

What Is an RV Tankless Water Heater?

Unlike conventional water heaters which come with storage chambers, a tankless water heater doesn’t produce and maintain hot water at a set temperature. Tank water heaters heat the water as it flows through the system. They’re also known as on-demand-type or instantaneous water heaters because they only produce and provide hot water as needed.

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Best rv tankless water heaters.

Next, are the 5 best RV tankless water heaters with details about each model and the pros and cons.

#1 – PrecisionTemp RV-550 Tankless Water Heater

BEST FOR: Full-time RVers or those who like to run multiple water sources at once like the shower and kitchen sink.

The PrecisionTemp RV-550 Tankless Water Heater is more expensive than most models but is an efficient and reliable workhorse that will stand the test of time.

This model design is specific for use in RVs, camping trailers , tiny houses , and cabins. The unit does not require a pilot light and runs with high efficiency on propane gas using the reliable VariFlame technology control system.

The entire product, from design, assembly, and testing is manufactured in the United States.

You can purchase the unit with either a floor or wall-vent. The system is easy to install and maintains an endless flow of hot water, meeting the demands of even busy full-timers. The company also boasts a strong reputation for helpful and responsive customer service to address questions or issues about the model.

The unit self-adjusts the use of gas depending upon the incoming water pressure flow and temperature, making it very effective at conserving propane.

• Saves interior RV space
• Reliable VariFlame control system
• Special design for RVs
• Fuel efficient
• High-quality materials
• Heavier and bulkier than other tankless models
• Needs good water pressure to run properly

#2 – Whale Premium Water Heater

BEST FOR: Any RVer who expects to spend time camping in colder climates .

The Whale Premium Water Heater offers benefits like solid construction and plenty of hot water, even for use during the winter season.

The Whale does not require special gas lines or plumbing to install. It features a quiet brushless motor, and the 12-volt power operates on less than three amps.

The Whale is a more affordable tankless unit that lets you adjust the water temperature to a setting most comfortable for you. Customers love how easy this unit was to install and how well it works once they follow the instructions in the manual about proper usage.

As with all tankless water heaters, a certain level of water flow must occur for this unit to operate correctly. Some RV parks have fluctuating water pressure and many recreational vehicles employ water-saving devices that you may need to remove to use this unit.

Low-flow showerheads or water-pressure regulators were two items customers talk about having to remove or replace to achieve a steady flow of hot water.

• Easy to upgrade/install from an 11-gallon tank system
• Simple temperature control adjustment
• High quality
• Solid design
• Unit is large

#3 – Eccotemp FVI-12-LP Propane Tankless Water Heater

BEST FOR: People with small to medium-size RVs and campers and those who strive to conserve water. Better for locations where the incoming water temperature is between 45-65 degrees Fahrenheit.

The Eccotemp FVI-12-LP Propane Tankless Water Heater rates at 3.6 gallons per minute and comes in a space-saving, compact design perfect for smaller RVs.

The Eccotemp features a digital display for temperature and error messages, a safe electronic ignition, quiet operation, and directly plugs into a 120-volt outlet which makes it a very user-friendly tankless water heater.

The unit comes with a stainless steel horizontal vent kit and can run off of a 20-100 pound propane tank standard on most RVs. This model has a manual temperature control, which means adjustments are made by turning knobs on the face of the unit for water and gas flow regulation.

You’ll love how little propane it takes to run the water heater and how quiet it operates. You won’t love that it takes a few uses to get the hang of suitable temperature control, but the water heats up very fast with little wait.

A word of caution, you’ll need to watch out for freezing conditions if the unit coils face an outside wall. It’s best to face the water heater in such a way to alleviate fears of damage to the unit from freezing temperatures.

• Great for small water demands
• Digital LED display
• Easy installation
• Energy-efficient
• No automatic water temperature setting
• Not made to mix with cold water

#4 – VEVOR 18L Propane Tankless Gas Water Heater

BEST FOR: RVers on a budget with small to medium campers who don’t mind running a water heater on propane only. Works best for campgrounds and locations at lower elevations.

The VEVOR 18L Propane Tankless Gas Water Heater is an affordable option for those looking for a propane-only tankless water heater system.

This VEVOR model can properly control both cold and warm water usage. The unit will automatically shut down if temperatures exceed a safe limit or if there is a flameout of the propane due to high winds.

The system will automatically decrease high water pressure conditions that could happen in RV parks and campgrounds. The unit has a method to discharge water to avoid freezes in cold temperatures and to remove water during periods of no use.

This tankless water heater uses energy-saving advancements to decrease noise and gas consumption.

• Uses energy-saving advancements to decrease noise and gas consumption
• Propane only
• May need extra parts from a hardware store for correct venting and install

#5 – MAREY Gas 10L Tankless Water Heater

BEST FOR: Weekend RVers who want an affordable, electric-free water heater, who camp at low altitudes and do not require a high demand for hot water.

The Marey Gas 10L Tankless Water Heater comes from a reliable manufacturer of portable and tankless water heaters for RVs, campers, and trailers and is a gas-only model with an affordable price tag.

It has a compact design that saves on space and is simple to install, in even tight locations. You’ll love how well it works, even under low-water-pressure conditions. You may have issues with the unit when camping spots were at or over 2,000 feet in altitude.

The unit only uses gas when water starts to flow, which is energy-efficient. An ample supply of hot water will handle most needs.

You will not require an electrical connection for this model, with ignition power coming from two D-cell batteries.

• Lightweight and compact
• Requires no electricity
• Problems with operation at altitudes over 2,000 feet
• Only runs on gas
• Not the best customer service

12 Additional Benefits of an RV Tankless Water Heater

Some people go camping by themselves. But for most people, camping is a time to bond and enjoy life with friends and family. Even millennials are in on the trend, with the number of campers increasing by the millions each year. Besides, I know several people who invested in large RVs as a second home and as a seasonal vacation spot.

With the growing number of people going on trips together, access to clean hot water can become a big question. The standard water heater only holds an average of 6 to 10 gallons of water, which is a massive headache for most. Water can run out before the last members of your group or family gets to shower. It can even catch you mid-bath, leaving you with cold water.

The rise of tankless water heaters is addressing this problem for the millions of casual and serious campers around the country. Unfortunately, tankless water heaters aren’t the standard option in many RVs, but I honestly think they are a good investment. It only took off the last ten years or so because of all the advancements in software and hardware technology.

Though they may cost you a couple hundred more dollars, they’re definitely worth the buck. If you aren’t convinced, here are 12 benefits of RV tankless water heaters.

A Tankless Water Heater Provides Hot Water Instantly

If you need hot water right now, you’ll get it. The lag time is almost non-existent, so you don’t have to wait for minutes or even an hour to get the water heated in a tank.

Of course, there will be limitations. While you can probably run two showers or a laundry cycle at the same time, most tankless water heaters can only supply water at a certain rate. In general, a tankless water heater can supply 2-6 gallons per minute on demand. For perspective, a shower can take up to 1-3 gallons per minute.

It’s Good for Everyone

For a full-size family, using a standard water heater can take all day. After each shower, the water heater has to recover and then heat a new batch of gallons. Otherwise, most of you will be stuck with cold water when the hot water runs out.

The same goes for hiking with friends. I’ve heard plenty of camping trips go sour because of in-fighting for the limited resources. Out in the wild, there’s nothing more desirable than a hot shower.

Compared to your standard water heater, a tankless water heater can provide a continuous supply of hot water on-demand. It makes it great for trips with a significant number of people, or for long-distance trips.

Bring the Convenience and Luxury of Home

An RV tankless water heater looks and feels exactly like the water heater you use at home. If you bought an RV thinking that it would make a great second home, then getting a tankless water heater is the logical step.

In a matter of seconds, hot water will come rushing out of the faucet. You have the hot water benefit of your traditional home while enjoying the vibe of the outdoor lifestyle.

Like the tankless water heater you may have at home, the RV version also comes with the “cold water sandwich.” The first few seconds of water during your shower will be cool, then it becomes hot.

Take Daily Showers

If you’re a full-time RV user, you need continuous access to hot and clean water. You can’t settle with a shower every once in a while, thinking that you’ll be back for a good soak in the city soon enough.

An RV tankless water heater, powered by 12V DC, can easily keep up with you and your daily hygiene needs. A standard RV water heater takes about an hour to get a batch of water heated enough. You can use a tankless water heater without pausing between each shower cycle for equipment recovery.

Take Long Showers

It’s not just about reducing the time in-between showers. It’s also about how long you can enjoy the hot water. The standard water heaters and hot water tanks in RVs can carry up to 10 gallons of water. Even then, you wouldn’t be able to enjoy a longer soak even if you wanted to. The typical standard water heater will get you about 5 to 7 minutes of hot water before the water becomes too cold for comfort. That’s disappointingly brief.

Tankless water heaters do away with the restrictions of the conventional water tank. Most RV shower heads will have a flow of 1.5-2.5 gallons per minute, and any RV tankless water heater worth its salt will be able to keep up with that rate.

Do Multiple Tasks at Once

Tankless water heaters can be point-of-use, so they only heat one outlet like your shower or sink, or they can be for your entire system, so they heat up the water going out your sink and shower.

You can run your shower while dishwashing with the benefit of an RV tankless water heater. The hot water won’t run out in that case.

It’s a Safer System

Keeping a tank of hot water, at a glance, already seems like a source of potential disaster. RV tankless water heaters don’t carry the same hazards because they work differently.

The flow of water through the unit triggers the operation of a tankless water heater. Some units operate only when there are 0.5 gallons of water per minute, or sometimes the threshold is even higher. It won’t ignite if the faucet isn’t on.

The burner will shut off if you stop using it, or refuse to ignite if no one’s around. The water isn’t kept piping hot until someone uses the shower and reestablishes the water flow. With an RV tankless water heater, you protect yourself from the hazards of overheating equipment.

A Tankless Water Heater Consumes Less Energy

Many RV and camping enthusiasts are probably concerned about the environment (and rightly so). The thing about RV standard water heaters is that they are always ignited, keeping 6 to 10 gallons of water hot until they’re used up. It makes sure that the water is heated to the set specific temperature at all times. On the other hand, RV tankless water heaters operate based on demand. They’re off when they’re not in use.

Because it’s not always on, RV tankless water heaters are better for the environment. The fuel is provided as propane for some models. Alternative power sources include battery and electric. Most people prefer an electric and battery-operated tankless water heater, just because it’s more efficient and popular.

This is an essential factor for any RV camper, not just environmentalists. Fuel consumption can cost a lot of money, not to mention the refueling effort. I personally saw a 30% reduction in our electricity costs after switching to a tankless water heater.

If you can stretch your supply of propane for the propane burner, you can reduce the number of times you have to restock in town. It also gives you the peace of mind whenever you camp in a location that has low availability of hot water and fuel sources.

It’s Light to Carry

At home, the solution to a small-capacity standard water heater is to switch it up to the next biggest model. From a 30-gallon heater, you can invest in a 60-gallon model. That’s generally more than enough for the family, even for days at a time.

Switching to a bigger model isn’t a good idea when you’re talking about RVs. Can you just imagine your RV holding up an extra 30 or 40 gallons worth of water just to make your shower better? That’s a nightmare on your RV. First of all, even the largest of RVs will be hard-pressed to find space for a giant model. The hundred-pound weight of the water, plus the weight of the bigger unit, is just not a good option.

On the other hand, tankless water heaters are light to carry. There are models of RV tankless water heaters that are specifically designed to be portable so that you can install them in different places. Tankless water heaters are about a fifth of the size of a standard tank. They’re that compact.

Because it heats on-demand, you also don’t have to struggle with the weight of 80 pounds of water if you are connected to the city line.

They Come in All Sorts of Features and Designs

You’ll be hard-pressed to find a piece of RV technology that’s as convenient as a well-designed tankless water heater. There are so many possible comforts that it can make bathing after an outdoor hike an exciting experience.

For example, there are units with freeze protection so you won’t have to worry about water damaging your equipment when winter sets in. The internal sensor and microcomputer which sets the temperature can also be dynamic. The sensor can detect the temperature of the incoming water to adjust the heat requirements and output of the heater. It’s an automatic and seamless process designed for our comfort.

The RV tankless water heater can come with a digital LED display to show you errors and present water temperature. I heard troubleshooting is easy with that one.

There’s Less Damage from Hard Water

The flow of hot water through the heating chamber basically flushes your unit and regularly maintains the insides. Each time hot water is used, you don’t have to worry about hard water minerals settling in your tank.

These Heaters Are Easy to Install

You’ll probably feel ready to call yourself a plumber after installing one of these babies. Or maybe not –the whole installation process for an RV tankless water heater is incredibly easy and straightforward. You can get it done under two hours.

Frequently Asked Questions about an RV Tankless Water Heater

Still thinking about upgrading to a tankless water heater? Here are three of the most common questions about tankless water heaters.

How Do Tankless Water Heaters Work?

An RV tankless water heater as a coiled chamber that heats the water as it flows through. An internal sensor detects the flow of water, causing the unit to ignite and start heating up.

Tankless water heaters can be powered by propane fuel, or by electricity. There are only two reasons why an RV tankless water heater will shut off— the absence of water flow, or lack of fuel.

Can You Set the Temperature with a Tankless Water Heater?

In standard water heaters, the water is almost always kept at 120° Fahrenheit. It’s the temperature you’ll get for the first few minutes until the cold water starts mixing in the tank and you start approaching 100°.

You can also set the temperature for a tankless water heater. The microcomputer in a tanker prevents the heater from exceeding a particular maximum, usually 120° F, but the temperature, in general, can change from time to time.

It depends on the temperature rise and the rate of water flow. For example, if the flow rate is very high, the water doesn’t get a lot of time within the heating chamber, so you get water that’s cooler than the maximum. If the source water is freezing, then the temperature of the water in your shower will also be cooler.

What Are the Different Types of RV Tankless Water Heaters?

RV tankless water heaters can be powered by different energy sources. The electric tankless water heater is one of the most popular types because it’s environmentally-friendly. It also takes up less space on the utility bill.

An electric heater is easy to install. You can hook it up to a generator, or even a solar panel if you have one.

Most of the models I’ve seen in the past were gas-fired, either running on propane or kerosene. Because it burns up fuels, you’d see flues so that the system can have good ventilation. It’s generally less expensive to buy and power than an electric tankless water heater.

Way back in the day, RV tankless water heaters were non-condensing. The design had a heat exchanger to heat up the water on demand. It does require stainless steel venting for the hot exhaust, which can take a big chunk of your budget. While it’s reliable, it’s not efficient. I don’t recommend this.

There are now condensing types, which use a second heat exchanger to make the system more efficient. You don’t have a lot of useless hot exhaust as it gets repurposed. It is less expensive, but I would still recommend an electric or propane tankless water heater.

Final Thoughts

In my opinion, there’s no question about whether or not a tankless water heater is a good buy. If you’re going to invest in a good camper or RV for the comforts it can provide while on the road, you should go all the way and invest in a tankless water heater. It’s become an essential part of my RV, mainly because I go out with family and sometimes friends.

I recommend the PrecisionTemp RV-550 Tankless Water Heater for its reliability, overall efficiency, and fair price point.

Regardless of which tankless water heater you buy, you’ll gain peace of mind having warm, on-demand running water.

So in summary, the benefits of a tankless water heater include continuous water on-demand, more hot water for everyone, better energy efficiency, a safer system, and a lighter unit for the RV. There is a variety of models that can add a different experience to your RV, from units with an LED display for easy use, to units with a freeze protection system to work well during the winter months.

However, don’t just take my word for it. Do your own research on tankless water heaters. I also mentioned throughout the article some drawbacks that can help you decide, such as the higher price tag.

Add to the Conversation

What’s your view on tankless water heaters in RVs? Do you think that the convenience it adds to your camping life is worth the cost? Or would you recommend sticking to the standard water heater instead? Tell me your thoughts!

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Brian Newman and his wife joined the full-time RV lifestyle in 2017. Brian has been a freelance writer since 2019 and has a diverse background that includes literature, religion, business, finance & investment, disability, recreational vehicles, and U.S. history.

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Tankless Water Heater For RV

Are you sick of camping and using the navy showers? Would you want to enjoy the great outdoors and a long, warm shower at the same time? You might maybe think about replacing your conventional water heater with an RV tankless water heater.

Let’s start now!

How Do Tankless Water Heaters Work in RVs?

An on-demand solution for heating water is an RV tankless water heater.

Traditional water heaters store water in a tank, adding weight and taking up valuable room to your rig.

Instead of keeping warm water in a tank, an RV tankless water heater warms water via a heat exchanger as you need it.

Now, you can shower without worrying about running out of hot water while also saving weight and space!

What Benefits Can a Tankless Water Heater Offer?

The primary benefit of tankless heaters that people often consider is unlimited and immediate hot water.

You may use hot water for whatever long you choose.

Because the hot water doesn’t run out, you may take 20-minute showers if you wish.

This also means that you won’t have to wait for the water to reheat within the tank before giving your kids a hot shower.

No issue if you forgot to switch on the heating.

There is no need to wait—just switch it on and go into the shower.

Efficiency is another another benefit.

You may conserve gas since you don’t have to keep the heater on constantly to receive hot water right away.

When compared to a tanked option, these heaters are often quite effective in heating water.

They do not lose heat through the tank walls, which contributes to this in part.

Additionally, since they are tankless, they lighten the load on your RV.

When you travel, you don’t need to bring a tank of water with you since tankless units take up considerably less room.

They are also very simple to operate and need little upkeep.

You can take lengthy, hot showers in your RV if it has a tankless hot water heater.

What Are the Drawbacks of a Tankless Water Heater for an RV?

The cost of replacing your current water heater with an RV tankless water heater will be high.

Tankless water heaters use just propane for heating.

Since the majority of RV tanked heaters can heat with either electricity or propane, this might be a drawback if you are connected in and not paying for energy.

Fortunately, compared to a tanked unit, they often have extremely high propane efficiency.

Before the tankless water heater turns on, you must let the water flow for a while.

If you often camp out and attempt to preserve water, this is something to take into account.

Some versions are better suited for boondocking since they can operate at significantly lower flow rates.

The Issue With Tankless Water Heaters for RVs.

The Six Best RV Tankless Water Heaters

These six tankless water heaters for RVs are lightweight and compact.

Although they come in a variety of sizes, the most of them have the same safety features.

Let’s analyze each one so you may choose the one that best suits your requirements.

#1. Truma AquaGo On-Demand Water Heater

About : A few years ago, the German business Truma made its American debut.

Both propane and 12V DC electricity are used to power this on-demand water heater.

Eco and Comfort are two more settings that it possesses.

Defining Features:  The Truma AquaGo On-Demand water heater simply warms the water you need, in contrast to traditional water heaters that retain gallons of water in the tank at all times.

Additionally, it features a little tank that mixes and warms water beforehand so that it heats up rapidly when you need it.

If you want to save money on water or gas, the two modes are excellent.

The “comfort” mode is best for boondocking since it uses less water by preheating its tiny mixing tank.

Finally, because you only heat the water you need rather than a full tank, the Truma AquaGo On-Demand water heater reduces the overall weight of your RV.

Unfortunately, you will need to go to one of their facilities or request one of their mobile technicians to come to you in order to have a Truma specialist install it.

#2. PrecisionTemp RV-550

About : The RV-550 tankless water heater from Precision Temp installs and vents without difficulty through the sidewall.

And PrecisionTemp has been using the dependable VariFlame Control technology for years.

PrecisionTemp RV-550 Tankless Water Heater – Wall…

Defining Features:  The RV-550’s 55,000 BTU continually distributes on-demand water.

Regardless of flow, the hot water remains consistent thanks to VariFlame Control technology.

Additionally, since there isn’t a water tank to heat, less propane is used.

RV owners like it since using less propane results in cheaper costs and fewer trips to replenish the tanks.

#3. GIRARD 2GWHAM

About : Girard created this tankless water heater specifically for winter usage.

It runs on a 12-volt battery and has a 42,000 BTU capacity.

Being a tankless water heater, it weighs just 22 pounds or so.

GIRARD 2GWHAM Tankless Water Heater

• Controls the burner to maintain the desired hot water temperature.
• Note: The water heater door must be ordered separately and is not included.
• 42,000 Btus, Which Gives An RV’S The Best Performance

Defining Features:  The Girard 2GWHAM offers constant hot water for whatever long you need it.

It has freeze prevention by turning on at cooler temps so you may use it in the winter.

Setting Up a New Tankless Instant RV Hot Water Heater by Girard

#4. FOGATTI RV Tankless Water Heater

About : The propane-powered RV tankless water heater by Fogatti warms 2.2 gallons of water per minute with up to 55,000 BTU.

Additionally, a remote controller for this water heater is included, making it simple to operate from within the RV.

The DC motor fan runs without any noise.

RV Tankless Water Heater, FOGATTI 2.9 GPM, 55000…

• The water heater’s cutout is 13 by 13 inches, and the door measures…
• The Fogatti tankless water heater is widely compatible for retrofit and…
• To maintain a constant water temperature, the integrated controlling burner is employed.

Defining Features : The included remote controller is useful since it saves you from having to go outdoors in the cold.

Flameout, anti-freeze, overheating, and overpressure protection are among the safety features.

Moreover, Fogatti provides a 12-month guarantee.

#5. Furrion 2.4GPM Tankless RV Gas Water Heater

About : Furrion is one of the most recognizable brands in the RV market.

The greatest heating power on the list belongs to their 2.4GPM tankless water heater, which has 60,000 BTU.

Up to 2.4 liters of water may be heated in a minute.

You may use this product worry-free since it is covered by a 2-year Furrion guarantee.

Furrion 2.4GPM Tankless RV Gas Water Heater with…

• High Heating Power: With a 2.4GPM capacity and a 60K BTU heating power,…
• Steady Temperatures:  Furrion’s Vortex technology constantly…
• Atwood Replacement Door: Specifically designed for retrofit…

Defining Features:  Furrion employs its Vortex technology to provide consistently hot water while it is in use.

The twin sensors that turn off automatically as the temperature rises are one safety feature.

It also incorporates VibrationSmart technology from Furrion to guard against damage while in transit.

#6. Camplux 2.64 GPM

This Camplux water heater is one of the more affordable choices.

This lightweight, portable gas water heater is popular among off-grid RVers and tent campers.

Unlike the other alternatives, it is not permanently attached to the car.

Both the showerhead and the gas regulator are included.

Camplux 2.64 GPM Tankless Propane Water Heater,…

• Design that is portable and small – 12.8 (L)*6.1(W)*21.65 (H)…
• It merely takes a few minutes to install instant hot water.
• Safety Testing Standard by CSA Ensure Your Safety-Failure of a flame

Defining Features:  If you’re tent camping, all you have to do is fasten this water heater to a tree and you’ll have hot water right away.

With just 19 pounds, it is lightweight and portable.

You’ll get 2.64 gallons of hot water per minute after a short while.

Protection against dry combustion, flame failure, freezing, insufficient water flow, overheating, and excessive water pressure are just a few of the safety features available.

Camplux 10L Tankless Gas Hot Water Heater Unboxing and Testing

Should Your RV Include a Tankless Water Heater?

If two-minute showers make you dread going camping, think about installing a tankless water heater in your RV.

When traveling with a family, a soothing shower could be the only private time you have.

Purchasing the ideal RV tankless water heater for your requirements can be worthwhile.

Just be aware of your surroundings and make decisions appropriately.

Tankless Water Heater For RV Videos Suggestions From Youtube

Updated on October 29, 2023

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Best RV Tankless Water Heaters: Quickly Access Hot Water On Demand

Get a tankless water heater and enjoy a consistent supply of hot water in your RV.

We may earn revenue from the products available on this page and participate in affiliate programs. Learn more ›

If you enjoy RVing, you'll eventually want to invest in a tankless water heater. They instantly heat water with a heat exchanger and don’t require a storage tank. The best RV tankless water heaters provide 2-5 gallons of hot water per minute. Check out our tankless RV water heater reviews and buying guide to find the best one for your camper.

Camplux Tankless Propane Water Heater

• Easy to carry around
• Can function even with a low water pressure supply
• Compatible with modified water systems
• Not recommended for heating drinking water
• Low flow rate may limit the use of multiple water outlets

EZ 101 Tankless Water Heater

• Reliable and cost-effective
• Easy to install
• Lets you adjust the temperature  and water flow rate
• Can be used in areas with no electric supply
• Batteries sold separately
• Susceptible to freeze damage

Takagi T-H3M-DV-N Tankless Water Heater

• Energy-efficient water heating
• Compact, wall-mountable design
• Corrosion-resistant construction
• Can supply a steady flow of hot water to multiple applications
• Can be noisy when the vent fan is activated
• May not be easy to install for DIYers

Benefits of RV Tankless Water Heaters

• They grant hot showers on demand. The best tankless water heater can provide hot water whenever you need it for showers, washing dishes, etc. You can also access a constant supply of H2O without a storage tank.
• They’re energy-efficient. Compared to a traditional storage tank heater, a tankless hot water heater for RV use has more energy efficiency. That's because it is less likely to lose heat from standing water.
• They distribute water more efficiently. If your family wants to take multiple showers while you're doing the dishes or washing clothes in your camper, it's not a problem. These units allow you to perform multiple functions at once and continue to produce hot water on demand.
• They're very durable. Tankless water heaters last on average between 10 to 15 years, while traditional ones may only have a lifespan of 6-10 years. Some tankless brands can last up to 20 years if they are properly maintained.
• They conserve water. You no longer have to waste water by letting it go down the drain in the shower while you're waiting for the hot water to come out. A tankless unit heats the water quickly compared to traditional tank heaters, which may take two to three minutes or more to expel hot water.
• They're cost-effective. A tankless water heater for RV showers and appliances heats water more efficiently than traditional ones, thus consuming less energy. As a result, it will save you several dollars each month.

Types of RV Tankless Water Heaters

What RV owners like about electric tankless water heaters is they are environmentally-friendly and very cost-effective. An RV tankless electric water heater is quite easy to install, and you can use it with a generator or solar panel. It is 99 percent efficient and does not contribute to greenhouse emissions.

An RV tankless gas water heater runs on kerosene or propane. It typically comes with power vents to release exhaust gases, and venting is essential for proper operation. One problem is a propane tankless water heater can release greenhouse gases. It is 85 percent efficient and is less expensive than electric tankless water heaters.

Non-Condensing

This type of tankless water heater uses a heat exchanger to heat water on demand. It is very reliable; however, stainless steel venting is required for the hot exhaust, which can be pricey. It's not particularly energy-efficient, especially if you use a lot of hot water in short bursts.

This type of unit uses a second heat exchanger that reuses the heat from the exhaust to further heat the water. As a result, condensing tankless water heaters are 92 to 94 percent efficient. While the PVC vents are inexpensive, the units are not very energy efficient when water is used in short bursts.

Excel is based in Miami, Fla., and has been in business since 2004. The company distributes the gasFlex flexible gas piping system as well as a line of Excel tankless gas water heaters. One of its most popular products is the Excel Tankless Water Heater . 

The Girard Group

Girard Products, based in Clemente, Calif., introduced its first RV tankless water heaters in 2009 and is one of the top-selling tankless water heater companies in the RV Industry. One recommended product is the 2GWHAM Tankless Water Heater .

Suburban 

Suburban Manufacturing was established in 1947 in Dayton, Tennessee, and is the leading manufacturer and supplier of RV heating, water heating, and cooking appliances. It is currently part of the AIRXCEL, INC. family. One popular product is the Suburban Electric Ignition RV Water Heater

The Takagi brand has been making tankless water heaters worldwide since 1952. It maintains regional offices in California, Tennessee, New Jersey and a global office in Canada. One recommended product is the Takagi Indoor Tankless Water Heater .

RV Tankless Water Heater Pricing

• Under $200: A small RV water heater typically costs several hundred dollars, but you can find some models for less than $200. They may be smaller in capacity and have fewer features compared to more expensive models.
• $200 to $500: Some of the most popular RV tankless water heaters are included in this price range. They are efficient enough to get the job done but aren’t super expensive.
• $500 and up: It's not uncommon to pay a lot for a premium tankless water unit. Some cost up to $1,000 or more. They are also frequently used in small cabins and by people who live off the grid.

Key Features

You should estimate your water consumption before purchasing an RV tankless water heater. That way, you will be able to determine what size you require. The shower area consumes between 1.5 to 3 gallons per minute, while the bathtub and toilet consume 2 to 4.5 gallons per minute, respectively. The kitchen sink can use around 1.5 gallons of water per minute.

Water Flow Rate

A tankless water heater's water flow rate is the amount of hot water it releases per minute. Most people use the heater when they shower, so the best RV tankless water heater will accommodate a typical family and can supply 2 to 2.5 gallons of hot water per minute.

Heating Capacity (BTU)

The British Thermal Unit (BTU) is the heat capacity a tankless heater provides. Groundwater temperatures vary depending on the location, and it can be more challenging to heat cold groundwater. Many units have between 30,000 and 50,000 BTUs, which is slightly smaller than what you get at your house. A higher rating means a higher efficiency unit. It also means that the unit can heat the water faster. 

Power Source

Tankless heaters are powered by natural gas, propane, and electricity, so check to see what source is available in your RV. If it's a single source, then you should select a heater using that power supply. If you have more than one power source such as electric and gas, be aware that gas heaters require more maintenance and electric ones are more expensive to run.

Other Considerations

• Space. Space is premium real estate in your camper, trailer, or RV. As a result, you need to make sure the water heater doesn't take up too much space. Make sure you know the actual size of the heater to see if it will fit properly. In addition, you may want one that's lightweight so you can easily maneuver it.
• Failsafe.   A tankless water heater for travel trailers and RVs should have some protections to keep it in good working order. This includes a design that prevents voltage shortages and spikes as well as accidental electronic ignition triggering due to excessive heat. It should also have features that protect it during bad weather and in rough terrain.

Best RV Tankless Water Heaters Reviews & Recommendations 2021

Best Overall

Camplux’s propane water heater is a small, compact, and lightweight option that will provide you with continuous hot water at a rate of 1.58 gallons per minute. This heater works best with a Camplux 12-volt water pump, but is also compatible with other modified versions of the 12-volt water pump. 

The Camplux heater is designed with a variety of safety features, including protection from overheating, freezing, flame failure, low-water flow, high-water pressure, and dry combustion. In case it detects any of the foregoing complications, an auto-shutoff switch will instantly turn off the heater. It’s recommended that you use it in a ventilated space if it's hooked up to a propane tank.

Unfortunately, the Camplux heater is not recommended for boiling drinking water. It only peaks at 114.8 degrees Fahrenheit, which is only enough to warm shower water and not for boiling safe drinking water.

The EZ101 is an instant propane-powered water heater sporting a compact design that’s ideal for indoor installation. It comes with a battery-powered ignition that automatically ignites the gas when you open a faucet, and automatically extinguishes the flame when the water supply is cut off. Also, it includes a 20-minute timer that will automatically turn off the heater to reduce the risk of carbon monoxide poisoning. 

The unit provides a steady flow of hot water at the rate of 2 gallons per minute, and has three dials on the front panel that you can use to adjust the water flow and its temperature. Besides that, this heater boasts a low water pressure startup function so it can still supply sufficient hot water to your shower head and faucet even when hooked to a gravity-fed water system.

However, you should know beforehand that it requires two, ”D” cell batteries to ignite the heater, but the batteries are sold separately. Also, the batteries should be replaced every six months of normal use.

Honorable Mention

This Takagi water heater utilizes condensing and powerful PVC direct vent technology to heat up water directly or indirectly in storage tanks. Not only is it good for heating shower water, but it can also be used in radiant floor systems, hydronic heating systems, and other domestic heating applications to heat the room or a swimming pool. 

The unit runs on natural gas, and has both a primary and secondary heat exchanger for better heat transfer. The primary heat exchanger is made from commercial-grade copper alloy, which provides 25 times better thermal efficiency than stainless steel. The secondary one features stainless steel for enhanced corrosion resistance. It also has a plethora of built-in safety features, including an overheat cut-off switch, an air-fuel ratio sensor, and a freeze protection system.

The main downside of this heater is that it can get quite loud when the vent fan is activated. Also, you may need to have the tap running in full swing to get warm water, and as a result, you may end up wasting a lot of water. In addition, installing the unit may not be a breeze for anyone who doesn’t have the tech know-how.

Sio Green IR288 Electric Tankless Water Heater

This is an electric heating system that works with hybrid hot water delivery systems and radiant heated floor systems. By utilizing infrared technology, the unit only needs about 110 to 220 volts and low amperage to heat a sufficient amount of water, which can be used in the bathroom, kitchen area, and anywhere else it’s needed. Therefore, it’s a great option for anyone looking for consistent hot water from an energy-efficient heating unit.

The unit delivers of a flow rate 2.3 gallons per minute at a 30-degree temperature rise. It has a compact design with a corrosion-resistant body that can be mounted anywhere, including under the sink or on a wall. The front panel has a digital display, which shows the temperature of the water (calibrated in Celsius). You can increase or decrease the water temperature, in one-degree increments, from the two buttons next to the display.

It’s recommended that you hire a professional to fix the unit for you; installation involves connecting it to your electrical and plumbing system, which can lead to electrocution if done incorrectly. Also, it’s mostly recommended for heating tap water; you won’t get a good spray of hot water from the showerhead since it can only heat a small amount of water at a time.

EcoSmart ECO 11 Electric Tankless Water Heater

The EcoSmart ECO 11 is an efficient electric heater designed with multiple features that might just help you save water and reduce your energy consumption. It does this by using EcoSmart’s patented self-modulated technology to calculate the energy needed to heat a specific amount of water to minimize waste. This can help you reduce your water heating costs by about 60 percent.

The unit can heat up 2 gallons of water per minute, and can be tuned to only heat water if you need it to. You can also adjust the temperature of the water to suit your preference with the digital thermostat (calibrated in Fahrenheit) on the front panel. Since it has a compact design, you can mount it on the wall to save on floor space, and it’s lightweight so installing it will be relatively easy. Lastly, it’s backed with a limited lifetime warranty for defects in workmanship.

However, this may not work for you if you intend to use it in colder climates where temperatures dip below 67 degrees. It may not deliver hot water effectively in such conditions. That aside, it has a working temperature range of 80 to 140 degrees and can be used to heat shower water.

Furrion Tankless Water Heater

The Furrion Tankless Water Heater is a gas-powered unit that was built for the modern outdoorsman who likes to travel off-grid. You can count on the unit to provide years of reliable service thanks to Furrion’s innovative VibrationSmart technology, which it gives the machine a solid structure so it can withstand intense vibrations when you are driving on uneven terrain. The unit provides up to 2.4 gallons of hot water per minute, and can be depended on to work effectively even when the temperatures dip to 34 degrees Fahrenheit. 

To reduce the risk of getting scalding hot water or cold water when using multiple water outlets at the same time, the unit creates a vortex pattern inside the water mixing chamber that mixes the water to a comfortable temperature. Best of all, it comes with a plethora of safety features, including a pressure relief valve and a dual-sensor that automatically powers off the unit when the water temperature is too high. 

However, all the advanced technology and features that go into making this unit reliable and safe for use don’t come at a low price. It’s a premium model, so expect to pay a bit more than most of the heaters on our list.

RecPro Tankless Water Heater

Available in white and black, the RecPro Tankless Water Heater is a sturdy and durable unit that provides hot water to your shower and faucets on demand. It comes with a remote, which you can use to adjust the temperature (in degrees Celsius or Fahrenheit) before activating the heater. The unit only starts up when water flows through it, and it heats the water to a maximum temperature of 124 degrees Fahrenheit. 

The unit is safe and reliable thanks to the built-in smart control function that ignites the gas that heats the water and also regulates the water temperature to a comfortable level. Also, it’s designed with a forced exhaust structure that keeps the air clean as it enters or leaves the combustion chamber. On top of that, it has a dust net that keeps the heating chamber free of dirt. 

Just note that while it may have a frost protection function, it only works when the unit is connected to both propane and 12-volt power. Otherwise, it will freeze when the temperatures drop below 40 degrees Fahrenheit. 

Stiebel Eltron DHC Tankless Electric Water Heater

We included the Stiebel Eltron Heater mainly for the versatility it offers. It’s available in several sizes each with different power ratings. However, this doesn’t mean that it’s a subpar product. In fact, it’s 50 percent more energy efficient in comparison to tanked storage heaters. It is also controlled with a flow switch, which helps to prevent permanent failure typically caused by dry fires.

The unit is hydraulically controlled, and this makes it operate more quietly than most tankless heaters. In addition, it can heat 2.5 gallons of water per minute to a maximum temperature of 130 degrees Fahrenheit, and a minimum of 80 degrees. 

Unfortunately, it isn’t recommended for heating shower water, but can deliver sufficient hot water to a single point of use such as a kitchen or bathroom sink. Despite that, it's recommended for both commercial and residential applications. It’s best installed near the sink so that you don’t have to purchase extra plumbing fittings. 

• If you have a tankless water heater that operates on propane, you may need to purchase stainless steel tubing for venting purposes, which can be a little expensive. These types of recreational vehicle heaters also need to be serviced annually. 
• Since RV water heaters are much smaller than home water heaters, you shouldn't spend too much time in the shower. You can turn the water off temporarily while you're shampooing your hair or soaping up your body to conserve water.
• Drain the water tank before you store your RV for an extended period of time. To prevent the pipes from freezing or cracking, make sure to winterize them.
• When you take your RV out of storage, turn off the bypass valve. You should fill the tank before you hit the road because if it heats up without any water in it, you may damage it.
• An anode rod will prevent corrosion in your tank. The water will corrode the rod instead of the tank. It's quite inexpensive and can greatly extend the tank's lifespan.

Q: Is it hard to convert a traditional RV water heater to a tankless one?

It's not too difficult if you plan in advance. Choose one that is the correct size and has the power source you desire before you make the conversion. Mount the unit; connect the gas, water, and electricity, lines; and install the flue vent. Consult a professional if you want to ensure that it's properly installed.

Q: What does it mean if only lukewarm water is coming out of the shower or faucet?

Check that the hot and cold faucets to the outside shower or water line are turned off. If they're on, the hot and cold water can mix together.

Q: Can I install a tankless water heater under the RV’s sink?

Sometimes. However, be sure to check the manufacturer's manual to be sure you know exactly where you can install a tankless water system.

Q: Do I need to clean a tankless water heater?

Yes, particularly if you haven't used the unit in a while. Cleaning it regularly will ward off bacteria. Read the manufacturer's manual for instructions.

Q: Do all tankless water heaters need electricity?

While some use gas as the main source of power, some brands require electricity for the automatic ignition to work. Other brands have a battery ignition, so electricity isn’t required.

Final Thoughts

The Camplux Tankless Propane Water Heater is one of the most portable water heaters on the market and this is one of the reasons it stands out for us. It can provide hot water on demand and won’t freeze even in the harshest winter conditions. However, if you are looking for a more affordable water heater that also does not occupy too much space, consider the EZ 101 Tankless Water Heater . 

Why Trust Us

Our reviews are driven by a combination of hands-on testing, expert input, “wisdom of the crowd” assessments from actual buyers, and our own expertise. We always aim to offer genuine, accurate guides to help you find the best picks.

Other ‘ RVs ’ Reviews You Might Like:

7 Best RV Tankless Water Heaters for On-Demand Hot Water

Are you tired of taking brief RV showers and still running out of hot water?

You certainly aren’t alone. The standard RV water heater holds a measly six gallons of water and can take an hour or more to refill and reheat.

This hot water dilemma is why more and more RVers are switching to an on-demand tankless water heater that provides a continual flow of hot water whenever you want.

So, if updating your camper’s hot water situation sounds appealing, get ready to learn more about the best RV tankless water heaters down below!

What Is a Tankless Water Heater?

Conventional water heaters use a holding tank that fills with water and is heated using gas or electricity. When you open any hot water tap in your home or RV, the water flows from the tank and out the faucet.

A tankless water heater doesn’t hold water and instead uses heating elements to heat water instantly as it passes through an internal pipe. The pipe coils through the unit, and a sensor automatically ignites the heating element when water flows through the line.

The sensor monitors the water’s temperature coming into the coils and adjusts the heat to bring the water to the temperature you set before it flows to your faucets.

As long as the water flow through the pipe isn’t too fast or too cold, the water will be hot when it exits the unit and runs to your shower or sinks.

Since the water is only heated as you need it, tankless water heaters are often called on-demand water heaters.

Electric vs. Propane RV Tankless Water Heater

Both electric and propane RV tankless water heaters are the two choices available for RV use.

Electric on-Demand Water Heater

Electric tankless water heaters are popular for RVers who don’t have or prefer not to use propane in their camper.

Just connect to the pedestal at your campsite, and you’ll have all the hot water you need as long as there’s no disruption of the campground power.

Another benefit of an electric RV tankless water heater is that campsite electricity is typically free, saving money over buying propane.

If there’s a power outage or while boondock camping, you can still operate an electric water heating system using a generator or solar power .

The downside of an electric-only RV on-demand water heater is the power draw necessary to run the system that can overwhelm many smaller motorhomes or travel trailers.

Propane on-Demand Water Heater

Propane tankless water heaters are a perfect fit for RVs because most campers already have a propane system in place or bring along a portable tank for grilling.

You can swap out a conventional RV water heater for a tankless propane model without a lot of extra work.

Another benefit of propane is that it allows you to have hot water when off-grid camping easily.

Having a propane water heater saves money if you’re a monthly, full-time, or seasonal camper at a campground that charges for electrical usage.

The downside to propane on-demand water heaters for RVs is that your propane tanks can run dry at inconvenient times, leaving you without hot water until you can get a refill.

Another pitfall of a propane system is that you’ll need to safely vent the water heater to prevent harmful gases from filling your camper.

Benefits of an RV Tankless Water Heater

A Tankless Water Heater Provides Instant Hot Water

You’ll only need to wait seconds for the water to heat up, and it will remain consistently hot until you turn off the faucet.

With a conventional RV water heater tank, you could be waiting up to an hour for more for the water to reheat.

A Tankless Water Heater System Is Safer

Tankless systems only operate the heating element when water begins to flow. The rate of flow also must meet a minimum level as a backup precaution.

Conventional water heaters must always run to keep the water hot during non-use or when the tank partially drains and tops back off with cool water.

You Can Finally Enjoy Long RV Showers

A tankless unit in your RV allows you to take as long of a shower as you like. It also lets others in your camper take a hot shower with no downtime in between or wash some dishes simultaneously without affecting the hot water supply.

Tankless Water Heaters Are Energy Efficient

A tankless water heater means no more keeping a six or 10-gallon RV water tank hot at all times, saving energy.

The constant water flow in a tankless system also prevents minerals from building up as they do inside a conventional water tank that leads to poor function or failure.

Tankless Water Heaters Are Lighter

Weight is always a concern in any recreational vehicle. Tankless water heaters are lighter and often less bulky than a conventional unit that, when filled with water, can weigh upwards of 100 pounds.

Important RV Tankless Water Heater Features to Look For

Rv tankless water heater flow rate.

You need to pay attention to the flow rate or gallons-per-minute(GPM) of water that can pass through the unit and still heat the water to the temperature you set.

Most RV on-demand water heaters will have a GPM between 1 and 3, but some can go as high as 5.

Most RVers find a GPM of 1.5 or 2 sufficient for general camping needs.

On-Demand RV Water Heater Pressure Rating

Tankless RV water heaters have a water-pressure range they can support, typically between 30-80 PSI .

The problem with a tankless unit is when the water pressure gets too low, it can shut down the heater, so a model that can operate on lower PSI is a smart buy.

There are times when water pressure drops significantly, such as during the morning or evening bathhouse shower rush or when RV park staff perform pool maintenance.

RV on-Demand Water Heater Temperature Range

Tankless on-demand water heater models should state how many degrees they can raise water temperature. Some are way more efficient than others to bring up the water temperature to a comfortable level.

This feature is essential because if you camp where the water source is very cold, the heater will need more power to warm up the water in the short amount of time it passes through the coils.

If you only camp where the groundwater is warmer, the unit won’t need to work nearly as hard to heat the water to the temperature you desire.

RV Tankless Water Heater Safety Features

Protect your tankless water heater for RV by buying a model with safety features such as:

• Automatic shut-down for low or high pressure
• Freeze and overheating protection
• Adjustments for altitude
• Proper venting and electrical ratings
• Digital fault alert codes and alarms

You want to RV without worrying your water heater will malfunction, so look for a model with as many safety features as possible.

Be aware that some tankless water heaters for recreational vehicles have problems at high altitudes. Read product information carefully if you like to camp in mountainous regions to get the correct model for your needs.

7 Best Tankless Water Heaters for RVs

1. girard gswh-2 tankless water heater.

• POWERFUL PERFORMANCE — At 42,000 BTUs, this continuous hot water heater…
• CONSISTENT TEMP — The onboard microprocessor monitors incoming cold water…
• HIGHLY EFFICIENT — The Girard RV tankless water heater consumes half the LP…
• INTELLIGENT CONTROL — With a digital user control panel, you can adjust the…
• Professional Installation is strongly recommended

The Girard GSWH-2 Tankless Water Heater is a top choice for permanent RV installation because it’s made to fit into most standard RV 6-gallon water heater compartments for fast and easy installation.

Top Features:

• Digital control panel
• Monitor for inlet flow, plus inlet and outlet temperature
• Freeze guard protection (ideal for cold-weather camping)
• Quite brushless motor
• Made for RV installation

The only downside to this water heater model is you need to purchase the access door separately, adding to the cost. There are four different RV access door styles to choose from to match your camper.

2. EZ 202 Tankless On-Demand Water Heater

The EZ 202 Tankless Water Heater is an excellent option for RV families with larger motorhomes or travel trailers because it offers a high GPM flow rate.

The portable unit also doesn’t require 12-volt wiring to ignite the heating coils, so you can also easily use it outdoors while camping.

• Powerful level of heating
• Use inside (with vent) or outside RV (using LP tank)
• Auto overheating shut-off
• Slim, compact, portable, and lightweight
• Works at higher altitudes
• Battery ignition (2 “D” cell)

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On the downside, this heater comes with a hose and shower head attachment that’s a bit too short for comfortable use. The heater also requires a high volume of air to operate efficiently indoors.

3. Eccotemp FVI-12-LP Indoor Propane Tankless Water Heater

• True 1/2NPT water fittings
• Power ventilation for safety and efficiency
• Tested safe electronic ignition system
• Digital temperature display with fully independent gas and water…
• Precise temperature and water flow adjustment

The Eccotemp FVI-12-LP Indoor Propane Tankless Water Heater is a simple-to-operate unit with a digital display that’s best for mid-size to smaller RVs who don’t require large quantities of hot water.

• Runs quietly
• Manual adjustment for temperature and gas
• Comes with stainless steel venting kit
• Sleek and compact design
• Uses 1/2″ NPT water fittings for quick install

On the downside, this model needs to plug into a 120V outlet to run the digital display and the exhaust fan, and it’s not for use at elevations over 2,000 feet.

4. PrecisionTemp RV-550 Tankless Water Heater

The PrecisionTemp RV 550 Tankless Water Heater is a quality unit that’s best for full-time RVers or for running multiple water sources at once as it maintains your set heat no matter the flow rate or incoming water temperature.

The unit mounts along a wall (also comes in a floor-vent option) and comes with a vented access panel, so your RV exterior has a flawless look.

• Patented VariFlame Control Technology
• Built-in freeze protection
• Flow sensor and modulation valve for safe operation
• Stainless steel construction
• Easy to winterize
• ECO high-temperature limit switch
• Easy retrofit installation in many motorcoaches

The downside of this model is the price tag and the bulky size. You will get a durable, quality-built, long-lasting unit with lots of safety features and a reliable hot-water supply, making it a great overall value.

5. Camp Chef Triton 5 Portable Tankless Water Heater

The Camp Chef Triton 5 Portable Tankless Water Heater is very affordable and best for outdoor clean up at the campsite for RVs without bathrooms such as small teardrop campers, pop-ups, campervans, or small travel trailers. Hook the heater up to a standard garden hose and propane tank, and you’re ready to go.

• Portable and sets up quickly
• Comes with 8-foot shower hose with 4-setting head
• Quick-adjust manual control knobs
• Hangs or can free-stand
• Includes propane tank regulator hose

The biggest downside is this model isn’t for permanent installation inside an RV. It also requires a minimum of 25 PSI to ignite the burners.

6. EcoSmart ECO 8 Electric Tankless Water Heater

• The product is highly durable
• The product is easy to use
• Manufactured in China

The EcoSmart ECO 8 Electric Tankless Water Heater boasts a 99.8% energy efficiency and is ideal for RVers who don’t have propane or prefer to run their camper on shore power.

• Patented Self-Modulating Technology
• Digital temperature control
• Field replaceable components
• Very compact and lightweight
• Easy click and twist operation

This unit’s drawback is that it requires a 240V electrical connection and 40-amp breaker, so only 50-amp RVs can install this model. It also needs inflow water to be 67°F and above to get sufficiently hot water, which means it’s most suitable for warmer camping locations.

7. Camplux 5L Propane Tankless Water Heater

No products found.

The Camplux 5L Water Heater is another excellent portable propane tankless water heaters for RV camping trips for those who don’t have an RV shower or those who want to have hot water outside to wash up dishes, people, or pets.

• Pairs with Camplux water pump when pressurized water source unavailable
• Includes shower and propane regulator hoses
• Heat, low-oxygen, anti-freeze, and flame-failure protection
• Super easy setup and operation
• Can operate on as low as 3 PSI

The only negative about this unit is that it’s made for outdoor use only, so you’ll need to bring along a garden hose and portable propane tank for use.

Final Thoughts

Having all the hot water you need during RV camping trips may seem like a luxury, but it really can increase camping comfort and convenience.

When you install a tankless water heater in your camper, there’ll be no more flipping a coin for who gets to shower first after that hours-long hike or frantically trying to wash all the dishes before the water gets cold.

Check out the tankless water heater models above that are ideal for RV installation. Trust me; the investment will be worth it!

About The Author

Charles joseph, related posts.

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1 thought on “7 best rv tankless water heaters for on-demand hot water”.

Sure wish someone would develop and sell a RV 0.5-1.0 GPM dual fuel propane and electric (240VAC@30 or 40A) tankless hot water heater that would go in the same place as the conventional RV 6 gallon hot water tank.

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7 Best RV Tankless Water Heaters (& Mini-Tank Models)

At A Glance: RV Tankless Water Heaters

• Marey GA10LP
• Precision Temp RV-550
• Eccotemp FV112-LP
• Gasland Outdoors BE158
• Suburban SW6DE

No matter whether you want the best tankless water heater for an RV or the best mini-tank, these top picks are sure to please and will even work in cabins and other small structures.

See Also: How to Choose, Maintain, and Troubleshoot an RV Water Heater

Table of Contents

RV Tankless Water Heater Reviews

1) marey ga10lp (best tankless water heater for rv).

While this water heater runs off liquid propane, a natural gas version is also available.

Thanks to the ability to control both water and gas flow, the 10L unit is able to provide up to 2.7 gallons per minute at 115 degrees. It can service up to three points throughout the structure at the temperature you desire, even when there’s low water pressure.

Another attractive feature of this water heater is its power source. Unlike most on-demand heaters, the GA10LP runs off of two D-cell batteries instead of an electrical connection so it’s perfect for off-the-grid use (propane gas is still required).

The entire, easy-to-install unit weighs a mere 21 pounds and is rust-proof and can be connected to your existing exhaust system.

While easy to install, it’s important to follow all instructions carefully. It may also take a little fiddling to find the perfect setting. This unit is designed more for stationary use, so you may have to tighten some of the leads after a trip.  

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2) Precision Temp RV-550

Approximately 940 gallons of hot water can be produced with a single 20lb propane tank, while the unit itself weighs a mere 32lbs. The unit also uses only 1.5 amps of power under normal operation and 3 amps when set for cold weather protection.

The RV-550 features automatic gas modulation, allowing it to self-adjust gas usage by monitoring water flow rate and temperature. As a result, you’ll get a more consistent temperature without being affected by the weather outside.

Providing 55,000 BTUs of water output, this model’s one of the most powerful on the market. In winter, the unit will automatically protect itself from freezing as long as it has gas and power.

This is a highly efficient and easy-to-use water heater . However, a few users have had some trouble that have been traced back to the LP regulator and use of flow restrictors.

Checking these two points should fix most problems, and the company offers great customer support in the event there are any further issues.  

3) Eccotemp FV112-LP

The unit is both quiet and space-saving, making it perfect for point-of-use when you want more than one for increased output.

It’s important to note that this unit runs similarly to a restrictor and the temperature setting knobs actually adjust the flow rate.

Thus, the higher you set the water temperature knob, the lower the maximum flow rate will be, whereas lower settings will require a higher minimum flow before activating but can provide a higher flow capacity. Set this to a level that best suits your needs, then set the gas knob to an acceptable temperature.

Note also that this unit is not well insulated against freezing temperatures and should be drained completely if not being used in cold temperatures. Several users have reported their unused unit cracking or exploding after being exposed to below freezing temperatures without being drained.  

4) Gasland Outdoors BE158

The built-in anti-freezing and overheat protection protect your family from the risk of explosion or burns. Meanwhile, it’s capable of a maximum 41,000 BTU per hour while still providing an 11.5 percent in energy savings.

It’s important to note that this portable tankless water heater is best suited as a point-of-use and not a replacement for your RV water heater. It activates when water pressure hits 2.5 PSI and can deliver 1.8 gallons per minute.

This makes it perfect for the shower, leaving your main hot water heater free to support the kitchen and bathroom sink without interrupting your hot water supply. Best of all, it runs on two D batteries, so there’s no need for an electrical hookup.

This heater is easy to install wherever you are, so long as you don’t overtighten the connections. The temperature settings use Celsius instead of Fahrenheit, so be careful when choosing the temperature.

Also, keep in mind that teflon tape around the gas connections is important, since this model was designed with mobility in mind and may develop leaks when connected during transit.  

5) Suburban SW6DE (Best Mini-Tank Water Heater for RV)

The tank’s solid one-piece shell protects it from the elements, while the replaceable anode rod protects the interior. It’s arguably the best mini-tank RV water heater you can buy.

There are very few complaints about this 12,000 BTU model. However, it should be noted that several Suburban water heater models were recalled in Australia in 2019 due to a carbon monoxide leak.

The SW6DE was not among those models recalled, nor were there recalls in other countries and the issue seemed to be related to use in Australian-built RVs.  

6) Atwood G6A-8E

Direct spark ignition and temperature limit switch, and pressure relief make this heater both safe and cost-effective. It even boasts an impressive 11.6 gallons per hour recovery rate.

Its 8,800 BTU input allows you to have hot water within 30 minutes of installation. However, be warned that this model may not have all of the fittings you need and refurbished units are prone to component failure.  

7) Bosch Tronic 3000 T

It has a temperature range of 65 to 145 degrees and can recover approximately 6.8 gallons per hour at 90 degrees, responding to a water PSI as low as 150. This Bosch is a great option for your camping trailer or as a point of use water heater under your home’s kitchen sink.

Three capacity options are available: the ES2.5 (2.5 gallon), ES4 (4 gallon), and ES7 (7 gallon). The tank features glass lining and a magnesium anode rod, and is covered by a 6-year warranty and one-year parts warranty.

There are a few important steps the manual omits that will prevent the majority of problems users have encountered. First, make sure you use a water heater connection hose with flat rubber gaskets on both connections. Standard NPT fittings may result in a poor seal.

Second, all connections should be pressure tested before connecting the unit to power. This will let you check for potential input leaks. When the unit is installed vertically, any such leak will run into the electrical connection box.

And finally, make sure the pressure relief valve is connected properly, as failure to properly connect may result in moisture that can mimic a leak.  

RV Tankless Water Heater Buying Guide

There are a lot of factors to consider when shopping for a home water heater , and your RV’s needs are no different. Weigh the following factors before choosing a model for the best possible fit.

Electric vs Gas

Electric water heaters are often the go-to for homes, but that might not hold true for an RV. Think about where you’re likely to set up and whether you already use propane for other on-board applications (such as a gas range).

Some models may use batteries, completely freeing you from the need of a power source, but others will require an electrical connection whether you use propane or electric for fuel.

Tankless vs Mini-Tank

Tankless models are highly efficient and take up less space. However, the amount of water they can produce at one time is more limited.

Mini-tanks require a little more space, but are also able to store a small quantity of hot water to boost output. They heat much faster than a normal tank model for your home . Choose the one which best suits your output and space needs.

Related: How Long Does it Take for a Water Heater to Heat Up?

Heating Capacity

This factor affects mainly mini-tank models, as the heating capacity of tankless models is the same as their flow capacity. For most basic RV needs, a 6-gallon tank will be sufficient if the recovery rate per hour is around double the capacity.

Smaller tanks heat water more quickly, so it’s less apparent when you run out than your 30-gallon home model running out during a long shower.

Families who use more hot water may require a larger tank or the addition of a tankless heater for on-demand service to a specific area.

Water Usage and Flow Capacity

The flow capacity of a tankless water heater (see also ‘ Marey GA10LP In-Depth Review For 2021 ‘) is based upon how much the unit can put out at a given time. This number affects how many taps can be used simultaneously before the heater has trouble keeping up. Knowing how much you may potentially need at a given time helps prevent temperature drops.

Below are a list of the average flow rates for different tap types to give you a better idea of the flow capacity needed for your family’s needs:

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Last updated on: January 27, 2022

The 15 Best RV Tankless Water Heaters (Review) in 2022

by Chris Coleman

www.rvtalk.net is reader supported. When you buy through links on our site, we may earn an affiliate commission.

When you’re camping in chilly weather, a nice hot shower might be all you need to forget that you’re living in an RV rather than in the absolute comfort of your own home. That said, camping in the wild does not mean you have to sacrifice certain luxury, and hot showers in cool weather is a must-have. A hot water tank can serve this purpose, but for a decently long shower, or multiple companions using hot water at the same time, you will need the best RV tankless water heater to enjoy such a perk.

An RV tankless water heater system is designed specifically for the RV setting and thus offers many advantages compared to the traditional tank-based system. Rather than storing hot water in a storage tank and heating small batches of water at a time like conventional heaters, RV tankless water heater systems quickly and constantly heat water on demand at the very moment you turn on the hot water knob, so you could access a limitless supply of hot water. 

This type of heater is also engineered to be compact with easy installation, as well as to save water and use energy efficiently. Thus, in the long run, you can expect to save quite an amount on water and electricity bills. 

That said, to pick the best tankless water heater for RV based on your budget and needs, there are certain things you must consider before making a purchase, since these systems differ somewhat from what you would find in your home. 

This guide will provide you with everything you need to know to choose the most suitable model for your rig, including how an RV tankless water heater system works, its unique benefits, the different types, most important buying criteria, followed by a list of the most prestigious manufacturers and our own handpicked list of the very best RV tankless water heater units on the market. You will also find, towards the end of this article, handy installation guide, maintenance tips as well as useful answers to frequently asked questions by fellow RVers.

There is something for every camper in this list, with top-notch models of varying price points, types and features catering for different needs and group sizes. Each shortlisted model offers a good balance of key buying criteria, has solid construction and functionality, and has been tested by countless full-time RVers and professionals alike, based on the many RV tankless water heater reviews that we’ve carefully browsed through .

Best RV Tankless Water Heaters Comparison Chart

What is it and how does it work, benefit of rv tankless water heater, 1. eccotemp l10 – best of the best, 2. camplux ay132 – editor’s choice, 3. ecosmart eco 11 – editor’s choice, 4. marey ga10lp tankless water heater, 5. camplux  10l outdoor bw264 tankless water heater, 6. eccotemp fvi12-lp tankless water heater, 7. rinnai v65ip tankless water heater, 8. eccotemp i12-lp tankless water heater, 9.  suburban 5117a tankless water heater, 10. atwood 96110 tankless water heater, 11. precisiontemp rv-550 tankless water heater, 12. eztankless ez101 tankless water heater, 13. excel pro tankless water heater, 14. suburban 5121a tankless water heater, 15. rinnai ru80en tankless water heater, power source, btu per hour, flow rate/water output, recovery rate, installation, other features, gas water heaters, electric water heaters, hybrid water heaters, condensing rv tankless water heater, non-condensing rv tankless water heater, the girard group, how to install tankless water heater in rv, 1. what  are common tankless water heater problems, 2. how to convert an rv water heater to tankless, 3. how much is a tankless water heater for an rv, 4. condensing vs. non-condensing tankless water heaters, 5. how often should i drain my rv water heater, 6. do i have to clean my water heater, 7. is it possible to install a water heater under the rv sink, 8. how come my water heater only lets out lukewarm water, 9. what kinds of maintenance do tankless water heaters need, rv tankless water heater basics.

Unless you live and camp where it’s warm all year round, an RV tankless water heater would be a must-have appliance, in fact, one of the first additions you must get for your rig. In comparison, traditional water heaters require a storage tank to store heated water and thus you will need to wait for the water in the tank to reach the desired temperature before you could use it. Meanwhile, these tankless systems supply us with continued supply of hot water on demand. It does so by heating water directly and almost instantly the very second you turn on the hot water knob and the water starts flowing out your faucet or showerhead. 

The moment the hot water tap is turned on, the water heater switches on, the cold water flows through pipes along a heat transfer, which will heat the water instantaneously either using an electric element or a gas burner. This means RV tankless water heaters could deliver continued supply of hot water. In winter, you won’t need to let your shower run for a while until the hot water comes out, as we all do.

Instant hot water: It is one of the most important features of a tankless system, which is why it is sometimes called RV on demand water heater or RV instant hot water heater systems. With it, you will not run out of hot water supply especially if you will get units that have higher recovery rate, usually a combination of gas and electric element used, that can churn out more gallons of hot water per hour of use . More on recovery rate in a later section, “important buying criteria”.

Save water: Since a tankless system heats water almost instantly, you no longer have to waste water by letting it go down the drain in the shower while you’re waiting for the hot water to come out. Compared to traditional tank heaters, which may take two to three minutes or more to churn out hot water, tankless systems conserve water, helping you save on water bills and save the environment as well.

Hot water for more than one source at the same time: With the ability to heat water quickly and efficiently, a tankless system is more suitable for big groups and families, when different occupants might want to use hot water at the same time: one might shower while another is washing the dishes.

Energy efficiency: In the case of a water heater with a tank, energy can be wasted because the water needs to be heated again and again until it reaches desired temperature. An RV tankless water heater instantaneously heats the water without having to store it in a tank, thus is more energy efficient and will reduce your bills in the long run. 

Smaller size: Tankless units are also more lightweight and compact, taking up less space in your RV and allows for easy installation and arrangement. You can easily move it around or store it away when not in use. Reviews from professionals and some full-time RVers reveal that these RV tankless water heater only takes up almost half the space that a standard water heater would use.

Lower maintenance: An RV tankless water heater doesn’t require a storage tank, so you don’t need to winterize it when the freezing months come, which can be quite a lot of work.

Lifespan : Recent innovations in materials and design have helped to extend the lifespan of RV tankless water heater systems. Indeed, the best RV tankless water heaters can last up to 15 or even 20 years, while traditional water heaters only have a lifespan of 6 to 10 years. 

The Best Tankless Water Heaters For RV: Our Handpicked List

Different people tend to have different preferences so particular models could receive highly conflicting opinions. Still, in the case that you look for a good buy, it’s strongly recommended that you check out the water heaters reviewed down below.

If you are familiar with the different types of RV tankless water heater and their characteristics, and know what you’re looking for based on your budget and needs, feel free to jump to dive into our delicious handpicked list of the absolute best RV tankless water heater below. 

Otherwise, skip to the next two sections to learn more about the features and benefits of different types of RV on demand water heater, as well as the most important buying criteria that you must consider before making a purchase. After all, each category and each model has its unique features as well as pros and cons, so the best RV tankless water heater would depend on your priorities. 

That said, we made sure the list below would cover a good variety of different types of tankless systems, as well as features and price points, and of course each model has been proven to be functional and durable, so once you have determined what you’re looking for, you’d definitely find something in this list to satisfy your requirements.

No products found.

Why This Is The Best:

Engineered to be set up and put away in a matter of moments,  Eccotemp L10 proves to be an excellent water heater for outdoor showers. Packing manual temperature control, the Eccotemp unit allows enthusiasts of RVing to change the water temperature as they see fit. Besides that, the water pressure is adjustable as well so it’s a breeze to get a customized shower experience. Needless to say, to people that like to shower on the go, Eccotemp L10 is undoubtedly the best RV tankless water heater money can buy.

Since the water heater from Eccotemp incorporates battery-powered electric ignition, it works reliably in an assortment of camping conditions. That is going to be a major plus if you travel extensively and want a dependable supply of hot water. About the fuel, Eccotemp L10 runs on gas which means you could hook it up to standard 20-pound propane tanks. Upon purchase, the Eccotemp water heater comes with accessories such as gas regulator, gas hose, garden hose adapter and others.

To maintain safe operation, Eccotemp L10 has an automatic 20-minute shutoff timer that reset once water stops then starts again. Because of that, the model of Eccotemp possesses a sublime safety record compared to typical water heaters on the market.

We’re camping outside (RV) while work is being done on our house – We hooked this hot water heater up outside of the shed and fill a un-insulated steel tub. We’ve been using it several times a week to take a bath all through the Winter here in N California where temps around the mid 30’s are common here. The key for a super hot bath was to add a hose water restrictor to the cold water IN pipe (See pics) You can dial down the flow even more with this ‘ til the water is scolding hot. It does take 15 to 20 mins to run the bath, but oh what a treat! Shared by James Benidorm

• Accessories included
• Economical and long-lasting
• Responsive customer service
• Adjusting knobs require strengthening
• Battery compartment should be redesigned

Why It’s An Editor’s Choice:

Featuring a compact body, Camplux AY132 easily fits in a wide range of recreational vehicles. Thanks to the integration of a carrying handle, moving the water heater of Camplux from spot to spot is a walk in the park too. Being a gas model, Camplux AY132 is best used out in the open but if necessary, you could install it inside your rig assuming that the interior is well-ventilated. The Camplux unit would shut down automatically if oxygen in the surrounding drops below a predetermined level so rest assured.

Regarding installation, the setup process of Camplux AY132 is undemanding and only lasts a few minutes in the usual cases. In addition to that, similar to many of its market competitors, the model from Camplux relies on batteries for ignition so its reliability is outstanding. As Camplux AY132 also employs innovative heating technology, the operating expense tends to be reasonable. Unsurprisingly, the unit of Camplux is considered to be the best RV tankless water heater at its price range for cost-conscious enthusiasts of RVing.

About temperature and pressure, Camplux AY132 lets users apply adjustments through the knobs located at the front of the unit. Thus, everyone could have enjoyable showers while using the tankless water heater for travel trailer made by Camplux.

We live off grid in Hawaii. We use this for two sinks and a shower. It’s just my husband and I that use the hot water and we’ve used this for about 7 months now without any problems. Also, it uses very little propane and the water pressure is perfect! I’ll buy another one of these some day. Two thumbs up!!! Shared by Jennifer Creasey

• Affordable cost
• Straightforward installation
• Top-notch customization
• Aftermarket support is less than ideal
• Barely acceptable delivery service

You seek a solid electric hot water heater for campers ? If that is so, you should check out EcoSmart ECO 11. Boasting the latest self-modulating technology, the model from EcoSmart would precisely regulate the energy output to ensure optimal heating. As a result, EcoSmart ECO 11 is able to help enthusiasts of RVing save energy and cut down the utility bill. Moreover, depending on the climates, the EcoSmart water heater can provide hot water to various applications at the same time.

In terms of control, EcoSmart ECO 11 utilizes an intuitive digital interface that permits users to set the temperature of water in increments of one degree. Therefore, tuning the temperature to individual liking is going to be a piece of cake. Aside from that, EcoSmart ECO 11 has a rather slim and sleek design so it frees up floor space inside recreational vehicles for more essential items. The water heater made by EcoSmart is quite light as well, hence, RVers could install and remove it at will.

So as to reassure customers, EcoSmart backs its water heater with a limited lifetime warranty. That is why if you want to have an insurance policy then EcoSmart ECO 11 would be the best RV tankless water heater you can buy.

I purchased this unit to replace a standard 50 gallon electric water heater. The price of a kilowatt hour of electricity here on the Big Island of Hawaii is .39 cents, and going to go higher. Installation was pretty straight forward with a cardboard template to mark the 3 holes required to mount the unit. I had to use reducers to get from 3/4 inch to 1/2 inch for the connection to the unit. I used the brass adapters supplied with the unit to make the connection to standard 1/2 inch stainless hose. Teflon tape is required to make sure there is no leaking from the brass adapters. The unit says that a 50 amp breaker should be used with #6 wire. I wired the unit temporarily using the #10 (30 amp) wire that went to the original heater. The current draw with a shower and sink faucet wide open was 38 amps with an inlet water temp of 70 degrees. I ran a new circuit of #8 wire as the water temp here is never going to get lower than 70 degrees. If you live in a cold climate or have a well I am sure the current draw will be higher so the #6 wire should be used. The temperature regulation with this unit is very stable. I have it set to 115 degrees and have no problem in the shower when a sink or dish washer comes on and demands more hot water flow. Shared by David A Tate

• Energy-efficient
• User-friendly control
• Durable and portable
• A couple of users complain about leakage
• The heat exchanger must be cleaned frequently

Why We Love It:

Capable of delivering endless volumes of water on demand, Marey GA10LP is held in high esteem by countless RVers. Designed to run on gas, the Marey unit is deemed to be well-suited for settings that face power shortages. Even the ignition mechanism of Marey GA10LP is powered by batteries so you would never have to worry about running out of hot water. Besides that, possessing a high-quality corrosion-resistant heat exchanger, the water heater from Marey can work for a lifetime.

As Marey GA10LP happens to have a humble profile, it takes up less space than traditional RV water heaters. Thus, it should be a breeze for you to find a spot for the model from Marey on your rig without having to ditch something. Additionally, Marey GA10LP is built to be rustproof which completely eliminates the issue of water loss caused by leaks. Last but not least, the Marey water heater has combustion and gas pressure protection so it’s safe to use.

With multiple points of use, Marey GA10LP could steadily supply hot water to an assortment of applications at once. Because of that, if you have to simultaneously run many applications that require hot water, you need to add the Marey unit to your shortlist.

This is a great on demand water heater for the price. It was fairly easy to install. The hardest part was finding the right vent pieces for the spot we have it installed. It takes some fine tuning and experimentation to get the temperature settings where they need to be. It all depends on your specific plumbing system and personal preference. It does get very hot in the highest setting so it takes some adjusting to get it just right. I highly recommend this unit. So far so good! Shared by Melissa

• Fast shipping
• Reliable and rugged
• Simple setup process
• Inconsistent operation between units
• The manual is poorly written

By incorporating modern energy-saving technology, Camplux BW264 reduces the operating expense but still allows enthusiasts of RVing to access hot water as they need. Furthermore, the water heater from Camplux has multilayered protection so its safety level is splendid compared to the average units. Compact and light, Camplux BW264 is often held in high esteem by RVers that like to stay adaptable while traveling. Since it’s accompanied by hardware too, the Camplux model is easy to set up.

Being a gas water heater, Camplux BW264 should be used in the outdoors but with proper venting arrangements, you could put it indoors as well. The unit of Camplux integrates electronic ignition powered by batteries, therefore, its operation is stable. In use, Camplux  BW264 let the users manage the pressure and the temperature of the water through respective turn knobs. Interestingly, the water heater made by Camplux also features a gas knob that you can use to change the consumption rate bases on the climate.

As for the cost, Camplux BW264 is inexpensive so it suits the shopping budget of ordinary enthusiasts of RVing nowadays. All in all, once it comes to cost-values, the Camplux model is definitely the best RV tankless water heater .

Setup was easy. Water turned on and off with shut-off valve on the hand sprayer. Water flow lights burner. Tested and works perfectly. Water flow and temperature easy to adjust. Flow from sprayer was strong with normal hose pressure. I purchased an additional 11.5 foot sprayer hose so I could locate the water heater farther away from the where the water will be used. The unit comes with easy connect hose fittings, but the are unique. I would like to see an attachment kit so these plastic fittings can be reordered. Plastic part inevitably crack or wear out. Having more on had would be good planning. There are brass fittings from standard hose thread connections…it’s only the quick snap-on quick disconnect parts that are made of plastic. Maximum temperature reached on the front display was 140 degrees. That was with the temperature dial turned up to maximum and the water flow to minimum. This is a very efficient water heater. I plan to use this water heater for emergencies and for pool side showers in the summer. Shared by Oh-Well-Darn

• Versatile and flexible
• Robust construction
• Some units arrive inoperable
• Users report occasional leaks around the fittings

Thanks to its ability to generate intense gas-fueled flame, Eccotemp FVI12-LP could instantly heat up water as it passes through the heat exchanger. Naturally, for RVers that want to get hot water in a timely manner, the model of Eccotemp is certainly the best RV tankless water heater . It’s worth noting that Eccotemp FVI12-LP is an on-demand water heater: it only runs if there is a demand for hot water. Hence, the unit from Eccotemp helps you conserve gas for other appliances in your rig.

Eccotemp FVI12-LP packs a flush digital temperature display so users should be able to tell the current temperature at a glance. To change the temperature of the water, you can use the front-mounted turn knobs to apply whatever adjustments that you see fit. In addition, as Eccotemp FVI12-LP has standard water fittings, adapting it to particular water setups would be a cakewalk. With a low noise output, the water heater made by Eccotemp guarantees a tranquil experience.

Employing a lightweight space-saving design, Eccotemp FVI12-LP could be easily stored and moved. As long as it receives gas and power for its electronic ignition system, the RV instant hot water heater from Eccotemp is going to work like a charm.

• Quiet operation
• Portability is marvelous
• A few units come with missing hardware
• Quality control still leaves things to be desired

Equipped with ThermaCirc360 technology, Rinnai V65iP can recirculate hot water through the pipes and accelerate the delivery of hot water to applications. Because of that, if you keep the Rinnai water heater around, you could access hot water in a blink of an eye. Also, since  Rinnai V65iP only heats water on demand, it uses less energy than classic water heaters for RV. That means the unit of Rinnai cuts down CO2 emission as well as gas consumption.

Packing a compact design that allows installations in non-traditional locations for water heaters, Rinnai V65iP would let RV save space inside recreational vehicles. Additionally, the model from Rinnai has a basic no-nonsense digital display so enthusiasts of RVing could increase and decrease the temperature as they like. If necessary, it’s possible for users to fit a WiFi control module to Rinnai V65iP for remote control. Therefore, you don’t have to stand next to the water heater Rinnai to monitor and manipulate its operation.

One interesting thing about Rinnai V65iP is that all of its components are replaceable so if something breaks down, you can easily grab replacements.

• Compact body
• Control layout is convenient
• Replaceable components
• Require odd exhaust venting
• Users complain about getting defective units

Featuring advanced low flow ignition technology, Eccotemp i12-LP lets enthusiasts of RVing enjoy an interrupted flow of hot water. As the unit made by Eccotemp uses standard water fittings and accompanies horizontal venting, installing it is just a breeze. Instead of pilot light,  Eccotemp i12-LP utilizes electronic ignition so it could readily produce hot water all day long. Also, the model from Eccotemp is highly compact which makes it a good buy for RVers that have small rigs.

As for the user interface, Eccotemp i12-LP has a stylish black tempered glass panel that incorporates LED display controls. Through the controls, you can turn the water heater on/off, change the temperature, measure the output and so on. Eccotemp i12-LP possesses a handy child lock designed to keep the youngsters from unwittingly messing up the operation settings. So if you intend to bring your kids along while traveling then the Eccotemp unit would be the best RV tankless water heater for you.

About post-purchase support, Eccotemp i12-LP is backed with a 2-year limited manufacturer warranty. In the case that your Eccotemp tankless water heater fails due to manufacturing defects, you could claim a free replacement.

• Sublime output
• Sturdy and sleek
• Excellent packaging
• Temperature spikes occur from time to time
• Ill-suited for camping settings with low temperatures

Constructed using porcelain-lined steel, Suburban 5117A could take everything that people throw at it. Even the controls are protected in a one-piece die-formed metal housing that stops outdoor elements from getting in. As a result, the water heater from Suburban is held in high esteem by full-time RVers that prioritize endurance. Besides that, since Suburban 5117A has a copolymer insulation jacket, it substantially reduces heat loss in use and allows enthusiasts of RVing to save gas.

Compared to the usual water heaters for RV on the market, the unit of Suburban boasts a fast recovery rate so it can deliver lots of hot water to the users in relatively few cycles. In terms of installation, packing a highly accessible gas line connection, Suburban 5117A is deemed very easy to set up. Thus, the Suburban model tends to be well-liked by DIY RVers that seek functional water heaters with uncomplicated installations. Suburban 5117A uses pilot light for gas ignition though, therefore, you might have to relight it every now and then.  

Regarding maintenance, RVers don’t have to pay special attention to the Suburban water heater. All you need to do is to swap the replaceable anode rod periodically to prevent  Suburban 5117A from getting rusty.

• Long-lasting
• Outstanding adaptability
• Installation is undemanding
• Leaking seems to be a persistent issue
• A lot of users complain about receiving used units

Basic and practical, Atwood 96110 gives a good account of itself in lots of environments which is why it’s an excellent companion for off-roading. Being a gas water heater with pilot light ignition,  the Atwood unit permits enthusiasts of RVing to secure hot water even if electricity is unavailable. Once you reach the camping site, you simply need to light up the pilot light and you would have hot water after half an hour. As it also has a compact body, the Atwood unit is capable of fitting limited spaces so you could easily add it to your rig.

About installation, the setup process of Atwood 96110 is straightforward so you don’t have to be a professional mechanic in order to get it working. In addition to that, to increase resistance against elements, the access door of the model from Atwood is powder-coated. Unsurprisingly, the reliability of Atwood 96110 receives positive remarks from various RV tankless water heater reviews . The water heater made by Atwood contains a temperature switch, a thermostat and a pressure/temperature relief valve as well.

For cost, Atwood 96110 indeed seems to be expensive for an RV tankless hot water heater but the values it offers nonetheless match its price tag. Atwood backs its units with a decent 2-year warranty too.

• Consistent operation
• Delivery service is superb
• A bit costly
• Occasional leakage is reported

Looking for a quality purpose-design RV tankless water heater ? Then PrecisionTemp RV-550 is going to be what you need. Designed specifically for four-season use, the model of PrecisionTemp guarantees a constant flow of hot water around the year. Thanks to the integration of built-in freeze protection,  PrecisionTemp RV-550 would remain operational as the outside temperature drops low. Moreover, as the PrecisionTemp water heater has an electric ignition system, enthusiasts of RVing don’t have to wait too long to get hot water.

Featuring employing automatic gas modulation, PrecisionTemp RV-550 self-adjusts gas usage based on temperature as well as rate of flow. Hence, the unit made by PrecisionTemp could maintain stable temperature control which addresses issues like overheating in the summer and inadequate heating in the winter. Besides that, PrecisionTemp RV-550 happens to be an RV on demand water heater that only activates if people need hot water. So the PrecisionTemp model can help RVers cut down the utility bill and save some bucks.

Since PrecisionTemp RV-550 is rather light in its class, getting it into position should be a walk in the park. The simple setup process means virtually everyone could install the PrecisionTemp unit with common tools.

• Dependable and reliable
• Top-notch aftermarket support
• Impressive temperature control
• Quite expensive
• Flow rate fluctuates on occasions

Why We Love It

Boasting fully-automatic operation, EZ101 of EZtankless can supply hot water mere moments after you turn on the shower faucet . As the ignition system of the EZtankless water heater draws power from D-cell batteries, it works like a charm in all kinds of conditions. Additionally, by incorporating robust low-pressure start-up, EZtankless EZ101 is able to work at pressure as low as 10 PSI. That is why once it comes to high-altitude camping, the unit of EZtankless is the best RV tankless water heater available for purchase nowadays.

To deliver an optimal experience, EZtankless EZ101 packs three dials that let RVers manage the numbers of burners, intensity of the flame and water flow. Because of that, it’s a breeze for you to tune the operation of the EZtankless model to your liking. As for the installation, the water inlet, the water outlet and the gas inlet all concentrate on the bottom EZtankless EZ101 so setting it up is a piece of cake. With a lightweight construction, the unit of EZtankless proves to be highly portable as well.

In terms of safety, EZtankless EZ101 has a 20-minute timer that reduces the risk of carbon monoxide poisoning in layouts with less than ideal ventilation. If the water supply is interrupted, the water heater made by EZtankless would promptly proceed to close the gas valve.  

• Splendid portability
• User interface is intuitive
• Limited rate of flow

Being a modulated tankless water heater, Excel Pro automatically changes its heat output in response to the flow rate of water running through it. As a result, the unit of Excel is capable of maintaining temperature while optimizing gas consumption. Furthermore, Excel Pro has a user-friendly digital display that allows enthusiasts of RVing to adjust water temperature at will. So you just have set the temperature as you see fit and you can start enjoying a nice hot shower.

In order to facilitate the setup process, Excel Pro could be exhausted vertically ( rooftops ) as well as horizontally ( wall vents ). Thus, adapting the water heater from Excel to particular camping environments would be a cakewalk. Also, since Excel Pro utilizes a standard gas connection, you can quickly hook it up to the usual propane tanks. The ignition system of the Excel model is electric, therefore, its start-up sequence is considered to be pretty smooth. 

As for cost, Excel Pro appears to be costly but if you have money to spend then it’s by all accounts a good buy. It’s noteworthy that the tankless water heater made of Excel is backed with an extended manufacturer warranty as well.

• Economical operation
• Adaptable and tough
• No-nonsense control
• High-priced
• A couple of units arrive with missing parts

Like Suburban 5117A but want a more reliable ignition system? In that case, Suburban 5121A is the unit for you. Packing direct spark ignition, the water heater from Suburban readily provides hot water to applications. Hence, with  Suburban 5121A on your rig, you could take a hot shower whenever you want which is certainly convenient. Similar to its cousin, the model of Suburban features a rather fast recovery rate so you don’t have to worry about rapid water cycles.

Possessing a durable porcelain-lined steel body, Suburban 5121A could handle shocks and vibrations well. Moreover, thanks to the presence of a resilient housing, the controls of the Suburban units are well-guarded against elements. Naturally, regarding endurance, Suburban 5121A is widely known to be the best RV tankless water heater in its price range. Aside from that, since it has a highly accessible exterior gas line connection, the tankless water heater made by Suburban is very simple to install.

In use, Suburban 5121A is able to keep heat loss to a minimum as it comes with an insulated jacket. That is why various enthusiasts of RVing that wish to conserve gas while traveling think highly of the Suburban unit.

• Noise level is low
• Marvelous ruggedness
• Good values for the cost
• People report getting incorrectly-sized units
• Some hardware must be bought separately  

Employing a condensing design with two heat exchangers to maximize heating values, Rinnai RU80EN is deemed to be a highly capable tankless water heater. Since it has a built-in recirculation program that cycles the external pump at preset parameters, the unit made by Rinnai could optimize gas consumption and keep the noise down. Because of that, Rinnai RU80EN is economical and it operates in a silent manner. In addition, the Rinnai water heater supports multiple venting arrangements so its adaptability is excellent.

So as to reduce the risk of long-term damage, Rinnai RU80EN incorporates enhanced scale detection which is handy. A temperature lock is included as well to prevent accidental/unauthorized changes to temperature settings. Thus, the tankless water heater from Rinnai could be put to good use in a wide range of camping setups. Though Rinnai RU80EN is more expensive than the average units on the market, it’s a worthwhile purchase nevertheless.

As proof of confidence, Rinnai offers everyone that decides to pick up its water heater a splendid warranty: 5-years for part and 1-year for labor. If you like to have peace of mind, you should consider getting Rinnai RU80EN.

• Sturdy body
• Quiet and efficient
• Hassle-free installation
• For outdoors only

Best RV Tankless Water: Buying Guide

Due to the special RV settings, when you are hunting for the best RV tankless water heater, there are important criteria to take into consideration. Which type or model is the most suitable for you depends on your budget, water consumption needs and the limitations of your rig, so you might  need to compromise based on your top priority.

Tankless heaters are powered by natural gas, propane, and electricity, so check to see what source is already available in your RV. If it’s a single source, then you basically have no choice but to select a heater using that power supply. If you have more than one power source such as electric and gas, you can opt for a hybrid model. Otherwise, remember that gas heaters require more maintenance, less efficient and less green while electric ones are more expensive to buy and to operate in the long term.

BTU stands for British Thermal Unit and it’s usually used to measure the heating capacity of water heaters. That means as the BTU rating increases, more heat would be directed to the water. In other words, a higher rating translates into a faster ability to heat water in a short amount of time.

For reference, a gas-burning RV tankless water heater, a good ballpark to look for is between 30,000 to 50,000 BTUs per hour. This level is slightly lower than what you get from the traditional tank-based water heater in your house. 

So as to determine the ideal BTU rating for your RV tankless water heater, it’s essential that you consider, and even calculate as accurately as possible your average daily and monthly water consumption. Overall, if you don’t have particularly high demands or only travel solo, you could settle for a standard water heater; otherwise, if you need lots of hot water, it is best to opt for a high-BTU model so you won’t need to worry about only getting lukewarm water in freezing weather.

Space for the water heater often varies substantially between vehicles, hence, you must pay attention to size to grab the best RV tankless water heater. The last thing you want to do is to spend big bucks on a huge water heater that your rig is simply incapable of accommodating. As a result, it’s widely advised that you use the specifications of your rig as references and decide accordingly. That would help you narrow down your shortlist as well.

If you travel with a few companions, you might want to run more than one hot water source at a time, so when looking for the best RV tankless water heater for your whole gang, do consider the flow rate or water output of a unit. 

This is measured by gallon per minute ( GPM ). The higher the flow rate, the more hot water sources you and your companions can use at the same time, including kitchen sink and shower.

To estimate how much flow you might need at any given time, you can assume that a shower stall in most RV’s will use between 1.5 to as much as 3-gallons per minute while the kitchen sink faucet will need roughly around 1.5 gallons per minute of hot water. Bathtub faucets and toilets typically consume even more at around 2.5 to 4.5 gallons per minute.

Here is a quick reference for basic water-consumption of appliances:

• Shower: 1.5 – 3 GPM
• Bathtub: 2 –  4 GPM
• Kitchen Sink: 1 – 1.5 GPM
• Dishwasher: 1 – 3 GPM
• Toilet: 0.5 – 1 GPM

Some camper water heater units can supply more than 2 gallons per minute, but the very best RV tankless water heater models can churn out up to 5 gallons of hot water per minute, depending on the model. In most cases, gas-powered heaters can produce higher flow rates than electric units. 

Recovery rate is the amount of hot water the water heater is capable of providing in a given period of time, measured in gallon per hour ( GPH ). The amount of hot water provided per hour will depend on several factors: the recovery efficiency, wattage of a heating element in an electric water heater, temperature rise and the time frame for which you are measuring the recovery rate. 

The recovery efficiency of a particular model, which measures how much of the total heat produced is absorbed into the water, varies depending on the power source. For instance, gas-fired tank-based residential water heaters generally have a 75% to 78% recovery efficiency. This means 75-78% of the total heat produced by the burner is absorbed into the water in the tank. Electric water heaters are said to have close to 100% recovery efficiency.

For example: In the case of an electric water heater, if the wattage of the elements is 4,000, the incoming water temperature is 40 degrees and you wish to heat the water to 120 degrees, i.e. an increase of 80 degrees, then the recovery rate is 20.5 gallon per hour ( GPH ) if calculated at 100% recovery efficiency for electric heaters.

As an RVer, you likely have to take care of many issues which is why you don’t need a water heater with complicated setups. Because of that, prior to picking up a particular model, you should make sure that you could master its installation. In addition, make sure the model you’re eyeing comes with complete accessories for a smooth installation, including required adapters, a showerhead, hoses, fittings and user manual.

Besides assessing water heaters directly, it’s a good idea to read customer reviews too to gain insights into the installation complexity of market models. If you have any questions, get in touch with the manufacturers to acquire reliable information.

If you want a user-friendly unit with an easy control interface, you can also choose one with a digital screen, allowing you to adjust temperature based on your needs and preferences.

In addition, to ensure you will get many years of good service from your chosen unit, look for the best RV tankless water heaters equipped with fail-safe features, or in other words, some protections to keep it in good working order. This includes a design that prevents voltage shortages and spikes as well as accidental electronic ignition triggering due to excessive heat. It should also have features that protect it from the heavy beatings and vibrations on the road in rough terrain, basically solid construction and parts that secure the unit firmly in place.

Unless you happen to have the money to replace your water heater now and then, it’s strongly recommended that you give durability some thoughts. By taking a look at the designs, materials, finishes and so on, you can tell if the water heater you like is able to last. If you notice signs that indicate an easily compromised integrity, it’s best that you start looking for other models.

Tankless water heaters for recreational vehicles come at various costs so there are fitting models for every shopping budget. Nonetheless, before committing to a purchase, you have to remember the rule of thumb: “You get what you pay for”. While it’s unnecessary to empty your wallet just to buy expensive premium-grade water heaters, you should also stay away from dirt-cheap models. To put together a sound budget, compile a list of desired features, seek out the water heaters that match the list and compare their prices.

Types Of Tankless Water Heaters For RV

RV tankless water heater systems are categorized by a few different power source options . The one that’s right for you might vary depending on where you plan to park up and what features are currently built into your RV, thus it is important to have some planning in this regard before deciding on a certain type. 

By power source, an RV tankless water heater can be categorized into: propane, electric, gas and hybrid water heaters. 

In most cases, this type requires propane, LP or kerosene to work. Tankless gas-powered water heater can have an efficiency of up to 85%.

Gas water heaters are reliable, thus ideal for campers who travel all year around. In addition, they have manageable operation expenses, thanks to the affordable gas cost.  

That said, to safely run gas water heaters, it’s necessary to set up venting arrangements to remove the exhaust. Compared to RV tankless electric water heater , this type requires venting to release exhaust, thus is not as friendly to the environment as their electricity-powered counterparts. 

Propane Water Heaters

Among the gas-powered heater systems, RV propane tankless water heater is the most common type of hot water heater for camper , simply because you can tap it into the existing propane system. Chances are if you previously had a propane heated traditional water heater, you can take advantage of the same plumbed line.

Electric water heaters run on electricity so unlike gas-powered units, they are greener as they don’t release exhausts. Depending on individual preferences, RVers can power models of the types using battery banks, generators, or solar energy. In addition to greenness and versatility, RV tankless electric water heater boasts a superior energy efficiency compared to gas water heaters, with up to 100% efficiency.

An electric tankless water heater also tends to be relatively easy to install, and if you are relatively handy, you should be able to handle it all by yourself. On the downside, water heaters that run on electricity are more expensive than gas-powered counterparts and they have high power consumption.

If you value versatility and convenience, then hybrid water heaters would be exactly what you need. Designed to run on electricity as well as gas, models of the type allow enthusiasts of RVing to casually enjoy hot water at all times. Nevertheless, once it comes to available options, hybrid water heaters fall behind other heater types.

RV tankless water heaters also fall into either condensing or non-condensing categories. 

A condensing RV tankless water heater essentially reuses the energy from the exhaust system to heat the water. As a result, condensing tankless water heaters are 92% to 94% efficient. 

Although these units use cheap PVC venting, which makes them more affordable than the non-condensing counterparts that use expensive stainless steel venting, they tend to be less energy efficient when you use them in short bursts like washing hands or quickly rinsing a small amount of dirty dishes. 

A non-condensing RV tankless water heater uses a special type of heat exchanger to heat water on demand.

The benefit is that these systems tend to be highly reliable and long-lived, since it often requires heavy-duty stainless steel venting to release the hot exhaust gases. Such durable materials inevitably increase the cost of non-condensing units.

Premier Brands Of RV Tankless Water Heaters

It’s safe to say that the brand of a water heater has rather negligible influences on its actual performance. Nonetheless, it’s strongly recommended that you prioritize models made by the manufacturers down below.

Atwood Mobile Products was founded in 1909 and entered the RV market in 1936. Atwood is now sold under the Dometic brand, and are known for RV products including water heaters, air conditioners, furnaces, and cooktops. 

Being a long-established name in the RV industry, Dometic releases plenty of high-quality appliances including tankless water heaters. Unsurprisingly, Dometic is the all-time favorite of enthusiasts of RVing that seek solid products.

Founded back in 1920, Rinnai is deemed to be one of the leading brands once it comes to tankless water heaters. Models from Rinnai receive a shower of praise from RVers, novices as well as veterans.

Able to build robust appliances that work reliably for many years, Suburban is respected by RV communities around the globe. If you wish to pick up a tankless water heater for camper that holds together, Suburban has excellent options for you.

Girard Products, based in California, introduced its first RV tankless water heaters in 2009 and has quickly gained a solid reputation as one of the top-selling tankless water heater companies in the RV Industry.

Based in Miami, Florida, Excel focuses on flexible gas piping systems but it also makes outstanding tankless gas water heaters. Looking for a good water heater that runs on gas? If that is so, you should consider buying from Excel.  

Known for incorporating quality materials and modern technologies into its products, Takagi never fails to meet the expectations of consumers. In addition, strict quality control means only the best water heaters could leave the factory.

Recognized as among the global top manufacturers of the best RV tankless water heaters, Eccotemp offers a wide range of tankless and traditional water heaters available in liquid propane, natural gas and electricity for both indoor and outdoor application. Eccotemp takes pride in their high quality products as well as customer service and customer satisfaction.

If you require a professional to install a tankless water heater in your RV, you will likely need to pay some $300 – $600, depending on how much conversion work needs to be done, and the complexity of the heater you have chosen.

However, if you have some basic plumbing and electrical experience, you should be able to get the installation done yourself, given that the model you bought comes with all the necessary parts and accessories. The instructions differ with each model, so make sure to adhere to the manufacturer’s instructions. Tankless water heaters are truly necessities in the RV world nowadays, so if you’re getting a popular best-selling model, chances are high that you will be able to find detailed installation guide videos on Youtube. 

The general installation process are as follows:

• Disconnect the water supply to your RV.
• Remove the old water heater. Remember that you’ll most likely have some water left in the line, so be sure to place down a bucket and some towels to deal with spills.
• Determine a location for the heater, if you’re not installing it in the same spot as the old one. Make sure you check the measurements of the new model and that it would fit in the designated space. If you’re upgrading from a hot water tank, you may need to perform some conversion work. It is important to check with the manufacturer if this is the case.
• Hook up the water supply line.
• Connect the gas and/or electricity system.
• Ensure adequate ventilation for the unit to work efficiently.
• Follow the manufacturer’s instructions to switch on the heater and you’re all set to enjoy your hot water.

FAQs About RV Tankless Water Heaters

Problem #1. You are not getting hot water from your tankless water heater If you only get lukewarm water or even cold water out of the faucet, there are many potential culprit as follows: Overconsumption: Because tankless units only heat water as it’s needed, running too many hot water appliances at the same time could mean the unit just can’t keep up. If you get hot water when only one hot water appliance is running, best check with a plumber if you need to upgrade to a tankless unit with a higher flow rate. Mixed water line: If only lukewarm water is coming out of the faucet, check that the hot and cold faucets to the outside shower or water line are turned off. If they’re on, the hot and cold water can mix together. Gas supply: your tankless water heater can’t heat water without a steady gas supply. Make sure you have paid your gas bill.  Gas valve: Make sure the gas valve feeding your tankless unit is turned ON. Obstructed vent/air intake: Make sure the vent is not obstructed. Be careful though, as these are usually located on the roof. Hard water: Hard water is water that contains high concentrations of minerals—specifically, dissolved calcium and magnesium. It is a known fact that if you live in places with hard water, like Arizona in the US, your water heater will die long before it reaches its intended lifespan. This is because hard water allows sediment to build up on your water heater’s heating element, causing your water heater to run longer than it needs to, thus making it deteriorate faster over time. Maintenance problem: If nothing resolves the problem, the culprit might be a bad ignitor or flame rod, or dirty burners. You should have a professional check all of these potential issues and clean or replace the faulty parts if needed.  Problem #2: The water heater shuts off during showers. If you have an older tankless water heater of over 10 years old, the problem is most likely that its minimum flow rate is too high. Every tankless water heater has a minimum flow rate, measured in gallons per minute. This is the minimum amount of water that needs to flow through the unit every minute for it to produce hot water. Essentially, if not enough cold water is flowing over the heat exchanger, the heater runs the risk of overheating, scalding you with super hot water as well as damaging the heat exchanger. Therefore, if the amount of hot water you’re asking for is below the minimum flow rate for your unit, your unit is probably shutting itself off as a safety precaution to avoid damage. If this is a persistent problem, the solution is to ask a plumber if you should upgrade your unit. Most older water heaters have a minimum flow rate of 1/2 to 3/4 gpm. However, newer units offer very low minimum flow rates of as low as 1⁄4 gpm, so your unit will consistently provide you with hot water even when there’s only a small demand for hot water, such as washing your hands. Problem #3: The water heater runs hot, then cold, then hot again. This is a common problem with RV tankless water heater units called “cold water sandwich”, which happens because the heat exchanger typically takes a while to warm up. Before it fully warms up and starts heating the water, you get a short run of cold water, although you would most likely get an initial blast of warm to hot water before this short run of cold water. The initial blast of hot water is the water left in the faucet from the unit’s last hot water run. Then, once the heat exchanger fully heats up, you get a steady flow of warm water. If this sandwich problem persists, consult a professional to see if you should combine your tankless unit with a small tank-based water heater. The mini-sized tank-based water heater will provide you with hot water while your tankless unit’s heat exchanger warms up, cutting down on your frustrating waiting time.

The detailed process of switching from a tank-based water heater to a tankless unit will depend heavily on your existing RV’s setup and your current heater. In general, the process is likely to involve installing a larger gas line, as well as a higher rated electrical cable and breaker. For gas powered models in particular, you will also need to have adequate ventilation installed.

As tankless water heaters have become an essential appliance, you have many options to choose from. Below is a general guideline on what you can expect from units of different price points: Under $200: The best RV tankless water heater typically costs several hundred dollars, but you can find some good quality models for less than $200, which is great value for money given that they will last you one to two decades with good maintenance. Of course, you get what you pay for, so they may have lower efficiency, capacity and fewer features or are less durable compared to more expensive models. $200 to $500: If you aim for the best RV tankless water heater with superb construction, water output and efficiency, you will find many satisfactory models in this price range with a good balance of compactness, streamlined design, functionality, convenient features, durability and efficiency. Over $500: Many full-time RVers can testify that over $500 for a premium tankless water unit is still a wise investment . Some cost up to $1,000 or more. Campers who opt for units of this price range are often full-time RVers who like to travel in winter. They are also commonly used by people who live off the grid or in small cabins.

In general, non-condensing RV tankless water heater systems are more durable thanks to more heavy duty components and are more reliable but you will need to pay more for these benefits. Meanwhile, a condensing RV tankless water heater is more affordable and energy efficient, but will not last as long due to the use of less durable parts. Condensing systems A condensing RV tankless water heater essentially reuses the heat energy from the exhaust system to help heat the water. Thanks to this, condensing tankless water heaters are 92% to 94% efficient.  Although these units use cheap PVC venting, which makes them more affordable than the non-condensing counterparts that use expensive stainless steel venting, they tend to be less energy efficient when you use them in short bursts like washing hands or quickly rinsing a small amount of dirty dishes.  Non-condensing systems A non-condensing RV tankless water heater essentially uses a special type of heat exchanger to heat water on demand and often requires heavy-duty stainless steel venting to release the hot exhaust gases. As a result of such use of durable material, they are highly reliable and long-lived, but are often more expensive than condensing units.

To ensure your water heater lasts for many years to come, and works as efficiently as possible, it’s important to drain and clean it out every now and then, ideally once or twice a year. The cleaning process involves flushing out the device, to remove any dirt or mineral deposits. The general process is as follows, but remember to consult your manufacturer’s instructions as always: Disconnect the gas and electricity supply to the heater. Connect a garden hose to a pond or sump pump on one end, and the cold water isolation valve on the other end. Connect a second garden hose to the hot water isolation valve Place both the pump and the open end of the second hose in a large bucket, and fill the bucket with five gallons water and white vinegar mixture. The ratio depends on how hardcore you want to be, but generally 1:1 would do. Many RVers use only vinegar with 5% acidity that you typically get from the supermarket.  Open the hot and cold isolation valves. Turn on the pump to circulate the diluted vinegar through the system for at least 30 minutes. Turn off the pump and dump the vinegar from the bucket. Keep the open ended hose in the bucket, and turn on the cold water supply valve, letting water flow through and into the bucket for five minutes. Close the valve again, and disconnect both the hoses from the inlet valves. Turn off the hot-water isolation valve. Remove the inlet filter screen, rinse it to remove sediments, and reinstall it. Turn both the hot and cold water supply valves back on, and open one or two hot water faucets to fully remove air from the lines. Then close them when only water is pumped through without any air. Now you’re all set. To be on the safe side, just conduct a visual check to make sure your water heater is running without faults.

To prevent the accumulation and growth of bacteria, you must clean your water heater periodically. Different water heaters have different cleaning requirements so it’s suggested that you follow instructions in the user’s manual. The average water heaters could be cleaned with some white vinegar but a couple of models accept cleaning solutions too.

Yes, you can install a water heater under your sink if you want to get hot water in an instant. Still, as a precaution, you have to check out the user’s manual to learn what needs to be done.

In that situation, it’s widely advised that you go take a look at the hot and cold faucets outside of the shower/water line. If the faucets happen to be on then hot and cold water could mix together.

All in all, tankless water heaters for RV prove to be a breeze to maintain. So as to keep your water heater in top shape, you should inspect the anode rod from time to time. For your information, the anode rod is designed to sacrifice itself to protect a water heater from rust in use. That means if the anode rod is severely damaged, your water heater will be vulnerable to corrosion. Moreover, it’s essential that you drain the water tank of your rig before putting it into storage.

You can also find our guides on how to choose the best RV shower head , best RV water hose , best RV water filter , best RV water pressure regulator , best RV water pump , best RV water softener  with detailed reviews in  RV Freshwater Systems  category. In these reviews, we only include and recommend the best products with the highest ratings among highly sold products on the market.

About Chris Coleman

Chris Coleman is an interesting travel blogger and outdoor photographer with a great sense of humor. He owns an RV Accessories shop in New York City so he has the knowledge necessary to provide thorough reviews and give advice on how to choose the right products for RV travel. He puts all that RV knowledge and experience to good use in his sharing posts. Besides product buying guides/reviews, Chris also writes informative articles, how-to articles and RV camping guides in his own interesting viewpoint. Chris’s blog is one of the most reliable information sources for RV campers no matter if you're an expert or a determined beginner.

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We use the Eccotemp L10 to provide hot water for our shower/vanity sink and kitchen sink in our small cabin home on a rural off-grid property. The fact that the unit has it’s own battery operated on-demand ignition system and functions at the pressure and water flow provided by an RV type 12 volt pump means our small solar panel/battery system and gas generator backup allows us to be completely independent of the power grid.

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9 Best RV Tankless Water Heater

EcoSmart ECO 11 Electric Tankless Water Heater

Read our review

Stiebel Eltron Tempra 29 Plus

Camplux 5L Portable Propane Tankless Water Heater

If you fancy RVing, you’ll really like to indulge in a tankless water heater at some point. They use a heat exchanger to immediately heat water and do not need a storage facility. 2-5 gallons of hot water per minute is provided by the top RV tankless water heaters.

It’s important to make sure your RV does have enough hot water, especially if you’re often do hiking, bicycling, or enjoying some other outdoor pursuits with your friends and family. The issue would be that a conventional hot water tank can only contain about 6-10 gallons of water on general, which would be an issue if you have more than five people in your company.

To discover the finest tankless RV water heater for a camper you can choose from, read our analysis and purchase guidelines.

Rinnai RU80EN 8.0 GPM Tankless Water Heater

GIRARD 2GWHAM Tankless Water Heater

PrecisionTemp RV-550 Tankless Water Heater

Bosch Mini Electric Tankless Water Heater

Marey Gas 10L Tankless Water Heater

List of the 9 best rv tankless water heaters.

Let us now see these products and models and their in-depth features!

• On demand a continuous and unlimited supply of hot water
• Sleek design saves space and no venting required
• Requires hard-wired 240 or 208-volt electric service
• Requires 3 separate dedicated 40 amp breakers with 8 gauge copper wiring

The Stiebel Eltron Tempra 29 Plus was created to give adequate power to heat water for a variety of medium-sized households. The Stiebel Eltron Tempra 29 Plus has a modern look with a digital display in which you can quickly observe the state of the water heater when compared to other options in the market as of now.

With Advanced Flow Control, this portable water heater should theoretically rarely run out of hot water. The Advanced Flow Control works by briefly reducing the outgoing flow to keep the water temperature constant.

Whenever you wish to change the temperature of the water flowing from the Stiebel Eltron Tempra 29 Plus, you can just merely use the monitor to do so. The temperature fluctuates between 68 and 140 degrees Fahrenheit.

Tankless water heaters, such as the Stiebel, are developed to become more energy-efficient than traditional water heaters that necessitate a tank. The Tempra 29 Plus from Stiebel Eltron is also self-modulating. This implies that this only consumes the minimum needed the energy to function properly. This tankless water heater is designed to detect the temperature of the water it requires to heat and then adjust the heat output correspondingly without wasting energy.

This tankless water heater will surely not take up much space and can be hidden away anywhere as long as you can always reach the control panel.

The parts guarantee on the Stiebel Eltron Tempra 29 Plus is three years. Other versions, such as the EcoSmart ECO 27, have even longer warranties, along with a lifetime warranty

• This model is energy-efficient
• It has a sleek design and look
• Features a digital display
• It has no remote access which can be a hassle to som users
• It only offers a three-year warranty on componenets

• CSA approved portable tankless water heater
• Wide comfortable water temperature range
• Compact and lightweight size tankless water
• Flame failure device, anti-freezing protection
• The tankless propane water heater

The Camplux 5L portable propane tankless water heater is among the tankless water heaters users would strongly suggest to any RV user. One of the most appealing features of this unit that I discovered is its unique portability. I noticed that it is truly quite portable in the notion that it is simple to transport it from one location to another.

An additional benefit discovered after using this water heater on a regular basis is that it uses the least amount of energy. It’s ideal for RV owners, especially families and a group of people that enjoy spending time outdoors. This is a useful unit for them, particularly in instances where there is a shortage of hot water.

People are also especially pleased with the compact size of this propane water heater since it allows one to set it up quickly and easily outside. It comes with a brass-finished regulator with two knobs: one for controlling the heat and the other for controlling the flow rate.

This is a significant benefit if you wish to alter the flow rate to guarantee that the water temperature is just correct. One other benefit of this unit is that it runs on propane, so you won’t have to worry about running out of gas. It also works effectively in off-grid environments.

• Extremely portable and easy to transport to a variety of locations
• It only uses a small amount of energy to run.
• Allows you to adjust the temperature and flow rate.
• It works without the use of power.
• Off-grid performance is excellent.
• There isn’t a drainage system or outlet.

• Condensing Technology for Greater Efficiency and Significant Energy Savings
• Up to 97-Percent Thermal Efficiency
• Pre-set at 120-DegreeF
• Natural Gas and Propane Models Available
• Meets California and Texas NOx Emissions Standards

Natural gas is used to power the Rinnai RU80EN 8.0 RV tankless water heater. It’s worth mentioning that natural gas has about a third of the energy density of propane and hence isn’t accessible in a standard holding tank at the consumer level.

This implies you’ll need a consistent source of natural gas, along with an RV park’s piped natural gas connection. It employs a unique “Condensing Technology” that maximizes natural gas’s already high energy efficiency.

As an outcome, it has thermal efficiencies of approximately 97 per cent, greatly surpassing propane in terms of energy savings. It also complies with California and Texas emission requirements.

It has a flow rate of 8 gallons per minute, which implies one individual can bathe while the other does dishes or operates the RV’s dishwasher. This is also a condensing tankless water heater, which assists you to get the most out of your heating system.

The Rinnai RU80EN 8.0 is among the greatest natural gas burner tankless water heaters if you do have access to outdoor gas for your RV.

• Natural gas appears to become the way to go these days, and if you have accessibility to it at a seasonal or long-term leasing RV park, the Rinnai RU80EN 8.0 will save you a great deal of money.
• With an 8 GPM flow rate, you can obtain consistent hot water from several taps or fixtures in your RV at once.
• Natural gas is only now making its way into RVs, and it is not yet accessible in-tank format for customers.
• There are various gas-fueled tanks on the market that may be worth the money. However, if you’re an RV camper who travels around a lot during the season, this kind of tankless water heater might not be for you.
• You may claim that a condensation tankless water heater loses a lot of its fuel efficiency when you are using hot water in short spurts.

• Regulates the burner to maintain the set hot water temperature.Freeze protection - designed for winter Use
• 42,000 BTUs which provides the optimum performance for an RV's plumbing
• No special LP gas lines or special plumbing required
• Quiet brushless motor
• 12V power operates at less than 3 amps

You’ll probably be one of the confident people when you get your hands on the Girard 2GWHAM On-demand Tankless Water Heater, you’ll realize how effective it is right away. Something users and buyers appreciate about this device are that it is a more powerful version of the Girard 1GWHM.

It is of medium size and can accommodate most motor homes. People are impressed by the fact that it’s intended to contain nearly all of the functions you’ll need to get through the winter months. Using its autonomous monitor, it can even sense entering temperature and modify the heat requirements accordingly.

The capability to defend against freezing is another wonderful feature that comes standard with this machine. It also works silently, which is a plus for me. This means you won’t have to worry about it disturbing your sleep when it’s on.

It may also produce up to 42,000 BTUs of heat. This is sufficient to maximize its functionality for your RV’s plumbing system. Another advantage of this unit is that it does not necessitate any specific plumbing or LP Gas lines.

• Girard 1GWHM version 2 is a tougher and more robust variant of the Girard 1GWHM.
• It’s the right size for most RVs.
• Heat requirements are adjusted using an automated monitor that detects temperature.
• Can provide protection from frost.
• It runs quietly even in the background.
• The purchase does not provide mounting hardware.

• Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.

The Precision Temp RV 550 is the next product on the list that you should look into because it is another good performer in the RV tankless water heater business. RVers can be I very delighted with this device since you can notice that it works well in a variety of settings, including RVs, tiny homes, trailers, mobile laundry services, and cottages.

One positive feature of this tankless water heater that we want to mention is its adaptability. It is primarily due to the fact that it is only available in a small and compact form. It will never take up too much room in your recreational vehicle as a result of this. It’s also easier to handle than traditional water heaters due to their reduced weight.

Another fantastic feature of this unit that we can appreciate is the fact that it uses less propane than the competition without sacrificing overall effectiveness. In fact, with just a 20-pound propane tank, it can always supply roughly 940 gallons of water at shower temperature. capacity.

And it does a good job of producing hot water on demand, thanks to its 55,000 BTUs of electricity. It also has a 1.5 GPM flow, which is more than enough to provide you with a nice shower temperature water whenever you need it. You will enjoy the fact that it runs quietly and efficiently as well because it will be among the devices that wouldn’t ruin a good sleep for everyone else in the RV as you use it.

• It’s flexible since it can be used in a variety of situations.
• Because it is lightweight and tiny, it is simple to handle.
• Ensures that less propane is consumed.
• The operation is both quiet and efficient
• It generates a respectable 55,000 BTU of heat.
• It is a bit more pricey than most models

Other PrecisionTemp RV-550 Tankless Water Heater

Another choice for the ones with smaller RVs is the PrecisionTemp RV-550 Tankless water Heater!

The Precision Temp The RV-550 was created to save water and energy while still functioning as a tankless RV water heater in the wall. It’s only 32 pounds, which would be a fraction of the weight of a standard water heater tank.

When compared to the standard water heater, it really only heats water whenever a hot water tap is switched on, effectively reducing overall propane usage for hot water by nearly half.

This is owing to the RV-550’s real automated gas modulation, which carefully self-adjusts active propane consumption depending on changes in water temperature and circulation. If you do the arithmetic, a 20-pound bottle of liquid propane can warm up to 940 gallons of water!

It’s also important to remember that Precision Temp understands that not every RV enthusiast and cabin user travels only during the summer months.

The RV-550 was designed with a particular freeze protection function in mind. While it consumes some more energy throughout the winter, it assures that you have access to hot water even when it’s freezing outside.

The Precision Temp RV-550 is among the top four-season RV tankless water heaters, made to match into a wall and deliver copious amounts of hot water.

• This RV tankless water heater can be used in the spring, summer, fall, and winter thanks to the built-in freeze prevention feature.
• It saves room because it can be tucked neatly into most walls or a cupboard.
• This function contributes to the RV-550’s energy efficiency by lowering the overall quantity of propane used for heating hot water during a single journey.
• Price is expensive despite its smaller size

• CONVENIENT HOT WATER HEATER
• LONG LASTING QUALITY
• INDEPENDENT INSTALLATION
• FAST RECOVERY RATE
• EASILY MOUNTED

If you own a smaller or tinier RV than most and you want a more compact and lighter tankless water heater then we have a great option for you too! Meet the Bosch Mini Electric tankless water heater.

The Bosch ES4 Tronic 3000 T Electric water heater has a 4-gallon capacity, which is unusual for a tankless water heater in just such a tiny RV. This 13.75 x 13.5 x 13.75-inch item will fit beneath your RV’s kitchen or bathroom sink if necessary!

It goes with a 3-foot power chord and is designed to be powered by a regular 120-volt AC outlet. Should you wish, you can connect it to a larger hot tank to provide you with more reserves on request.

The Bosch ES4 Tronic 3000 includes an outer control dial for fine-tuning the temperature range, and also a temperature and pressure relief valve. The tank’s inside is glass-lined, providing excellent insulation and corrosion protection.

The Bosch ES4 is among the best tiny tankless water heaters in the industry if you need a simple RV quick hot water heater that operates on 120 AC and can be put beneath an RV sink.

• For a machine that can be fitted beneath an RV sink, the 4-gallon capacity is remarkable.
• This improves protection against corrosion, which is important when hot water comes into contact with metal.
• Because the electric element is just so small, its overall life is restricted, and it may only last a short time after the guarantee expires
• Endless On-Demand Hot Water
• Save Energy
• EcoSmart ECO 11 Sizing

The EcoSmart Eco 11 can quickly heat water to 105 degrees Fahrenheit. The heater will send hot water to many pipes as soon as the water meets this temperature.

The water heating system features digital temperature control, which allows a person to adjust the temperature of the water heater in one-degree intervals. All of the heater settings are intended to give the user complete access to the device and ensure that hot water is produced consistently.

The tankless water heater’s operation will be compromised if the entering temperature of the water is less than 67 °F. This may result in a lower maximum water temperature or lower hot flow conditions.

If you’ve been searching for a means to save money on a regular basis, start with your cost of electricity. Using such a tankless water heater might save you hundreds of dollars annually, depending on the location as well as what your energy bills are.

The Eco 11 water heater, as per the company, could also save you up to 60% on your energy expenditures. The EcoSmart Eco 11 is a highly efficient device. It has no power reserve and it will only turn on if a pipe is turned on. The heater will turn off as quickly as the pipe is turned off.

Another thing you should know about this model is that it is very easy and simple to install.

The water heater only requires a 60 amp power source and #6 copper gauge wire to operate. The thermostat on the unit is both automated and reprogrammable. The water heater automatically determines the beginning temperature, making it very simple to operate. Unfortunately, you may not be qualified for EcoSmart’s product warranty if you set up this tankless water heater independently.

• Every one of the parts is constructed of copper or stainless steel for long-term reliability.
• The heater’s small size reduces the amount of space it takes up.
• For optimal performance, it employs technology that regulates the unit’s energy output.
• It is possible to utilize the heater for a single or many applications.
• The machine has the ability to heat up to 2 gallons of water each minute. 
• This water heater’s “point of use” concept isn’t perfect in all situations.
• A restrictor should be installed with the unit.
• The heater must always be professionally installed in order for the lifetime warranty to be effective.
• This unit is flow activate
• Save up to 60% on electricity bills for water heating
• Compact design saves space and is easy to install almost anywhere
• No electrical connection is required so it's perfect alternative for those homes experiencing frequent power outages
• Unlimited hot water whenever is needed
• Provide endless hot water on demand and only as needed
• Allows water temperature to be controlled

If you’re looking for a highly impressive and trustworthy tankless water heater, the Marey Gas 10L is one alternative you should consider. This particular unit is often recommended by many users because of its stability in terms of offering dependable efficiency and competitiveness.

The fact that this unit is built to be compact is something that many people appreciate. That so, I am confident that once installed, it will save a significant amount of space. This unit’s tiny and portable structure also makes it very simple to install in practically any location.

It’s also a wise purchase because it can heat a limitless amount of water depending on your needs. It also allows you to control the flow of both water and gas, allowing you to get the ideal temperature according to your preferences.

It does not require any electricity to function. This implies that if you have this unit, you won’t need an RV electric tankless water heater only to keep a steady supply of hot water in case of a power outage. It also features a 3.1 GPM capacity, demonstrating its ability to provide hot water to the entire household.

• Design is compact and can save a lot of space for RVers
• Installation is simple in a variety of locations.
• It has the ability to heat an infinite amount of water.
• Capable of managing water and gas flow
• It’s not ideal for residence use

RV Tankless Water Heater Benefits

Energy efficient, a tankless hot water heater for rv utilization is much more energy-efficient than a standard storage tank heater. this is because standing water has become less prone to losing heat., provide hot showers.

The greatest tankless water heater can deliver hot water whenever you really need it for different uses like showers, dishes, and other activities. Without a storage tank, you can get a steady supply of H2O. It will be perfect to use in colder weather or just to have warm and hot water for extra comfort in your RV.

Efficient Water Distribution

It isn’t a concern if your group wishes to take many showers in your RV while you’re doing the housework or washing laundry. These machines let you do numerous things at once while still producing hot water on need. This means that with a tankless water heater, you don’t have to worry about doing one thing after another and having to wait for someone to finish their task first before showering, you can all do this even at the same time. It’s very efficient for RV uses that come in a group or family.

Conserves Water

Users no longer just had to waste the water by continuing to run down the drain in the bathroom whilst also you sit tight for the hot water to flow out. When compared to conventional tank heaters, which can take two to three minutes or more to expel hot water, a tankless device warms instantly.

Durable and Long-time Use

Tankless water heaters have such a life expectancy of 10 to 15 years on typical, whereas regular ones might very well only have a longevity of 6-10 years. If correctly managed, some tankless manufacturers could last up to 20 years.

Cost-Effective

A tankless water heater for motorhome showers and devices heats water extra efficient than conventional ones, ingesting less energy as a result. As an outcome, this will save you money every month.

Types of Tankless Water Heaters

Kerosene or propane is used to power an RV tankless gas water heater. It usually has power airflow to let out exhaust gases, and adequate ventilation is required for effective functioning. One issue is that a propane tankless water heater can emit greenhouse gases. It is more effective than electric tankless water heaters and less costly.

Electric tankless water heaters are popular among RV owners because they are both eco friendly and cost-effective. An RV tankless electric water heater is simple to set up and can be powered by a generator or a solar panel. It is 99 per cent efficient and produces no greenhouse gas emissions.

Non-condensing

A heat exchanger is used in this sort of tankless water heater to heat the water on demand. It is very dependable; nevertheless, stainless steel venting for the hot exhaust is necessary, which can be costly. It isn’t very energy efficient, particularly if you use a bunch of hot water in quick bursts.

This category of device employs a second heat exchanger that re-heats the water by reusing the heat from the exhaust. As an outcome, condensing tankless water heaters have an efficiency rating of 92 to 94 per cent. Whereas the PVC vents are relatively affordable, when the water has been used in short bursts, the components are not really energy efficient.

Buyer’s Guide to Buying RV Tankless Water Heater

Power source of water heater.

Tankless heaters can be operated by natural gas, propane, or electricity, so determine which component is accessible in your RV. If it was a single source, choose a heater that uses that power supply. If you do have over than one source of power, such as electric and gas, keep in mind that gas heaters necessitate further upkeep and electric heaters cost more to operate. Choosing one will depend on your means and your references too.

Capacity for Heating Water

The heat capacity of a tankless heater is measured in British Thermal Units (BTUs). Groundwater temperatures vary from place to place, and heating cold groundwater can become more difficult. Many components have 30,000 to 50,000 BTUs, which is a little less than what you get at home. A higher rating indicates a more efficient unit. It also implies that the unit can warm the water more quickly.

Flow Rate of Water

The flow rate of water of a tankless water heater is the quantity of hot water released per minute. Because most users have used the heater once they bath, the ideal RV tankless water heater can provide the 2 to 2.5 gallons of hot water per minute and can cater an average family.

Size of Water Heater

Before acquiring an RV tankless water heater, you could perhaps evaluate your water usage. This way, you’ll be able to figure out what size you need. The shower area uses 1.5 to 3 gallons of water per minute, while the bathtub and toilet use 2 to 4.5 gallons of water per minute, respectively. The kitchen sink uses approximately 1.5 gallons of water per minute.

Space in Your RV

In your camper, trailer, or RV, space is valuable part of it. As a matter of fact, you must ensure that the water heater does not take up so much space. Keep in mind the actual dimensions of the heater to ensure the proper fit. You may also want one that is compact so that you can conveniently move it around or be able to get to it easily.

Reliability of the Water Heater

Tankless water heaters for mobile homes and RVs should have had some safeguards in place to keep them in proper working order. This encompasses a layout that prevents voltage shortages and spikes, as well as unplanned electronic ignition igniting caused by high temperatures. It may also have measures in place to protect it from the elements and rough terrain.

Other Things to Consider When Owning an RV Tankless Water Heater

• If you own a propane tankless water heater, you may also have to acquire stainless steel tubing for letting off steam and ventilation purposes, which can also be costly. Such types of motor home heaters must also be handled on an annual basis.
• Before storing your RV for a longer length of time, drain the water tank. Make sure to winterize your pipes to keep them from cooling or cracking.
• Turn off the outlet valve once you remove your RV from containers. Users could perhaps fill the tank prior to actually driving because even if it heats up without even any water in it, it could cause serious damage.
• An anode rod will keep your tank from corroding. Rather than corroding the tank, the moisture will corrode the rod. It’s relatively cheap and can significantly increase the tank’s life expectancy.
• You should just not spend a lot of time in the shower because RV water heaters are so much tinier than household water heaters. To save water, shut off the water momentarily while shampooing your hair or washing up your body.

Prices for RV Tankless Water Heaters

As we all know, RV Tankless Water Heaters may vary on prices depending on their seizes, types, brands, and designs. However, to get a hang of how much they will cost and what they may offer here are some few things to note of.

• RV Tankless Water Heaters below $200. A modest RV water heater normally costs a few hundred dollars, however some designs can be found for much less than $200. They do have a lower capacity and fewer characteristics than more expensive options.
• RV Tankles Water Heaters from $200 to $500.  This cost range includes several of the most widely known RV tankless water heaters. They are effective enough to get the work completed while not being outrageously costly.
• RV Tankless Water Heaters above $500. It is not relatively rare to pay a hefty price for a high-end tankless water heater. Some can cost $1,000 or even more. They’re also popular in comparatively tiny cabins and among residents who stay off the grid.
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More and more RV owners and businesses are choosing "Fogatti" over any other tankless water heater brand.They choose us for our high-quality standards in RV water heating, our genuinely satisfying after-sales service,and because our RV manufacturing technology has reached its pinnacle.

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InstaShower 6

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InstaShower 8Pro

15" ×15.4" × 15"

15" x 14.3" × 15"

15" ×16.4" × 15"

LP(Propane)

14.5- 116 PSI

Automatic Pulse Ignition

What's in the Box?

Of course! Our RV water heaters are suitable for all RVs. In some cases, you may need our door frame accessories to ensure a proper fit, especially if your existing water heater has different opening sizes. Contact us for more details.

Compare with the Plus one, the Pro one is our new product that added a mixing tank and a decorative frame.

Here is an installation video , please check carefully.

If you still can't install successfully, please contact our after-sales team.

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Tankless Water Heaters

Hot water - whenever and wherever.

Enjoy endless hot water with the Suburban Advantage Tankless Water Heater. Say “good bye” to waiting for water to reheat in a conventional tank. Showers and baths are best enjoyed slowly, so LIVE FREE from the restraints of limited hot water supplies. Dishes and even the laundry can be done with an infinite supply of hot water whenever and wherever, simultaneously from every fixture.

With no storage tank to heat water, the Suburban Advantage Tankless Water Heater reduces weight and increases efficiency by only operating when the need for hot water arises.

The Suburban Advantage Tankless Water Heater uses an exclusive 60,000 BTU 2-Stage Modulating Combustion System (MCS) which instantaneously adjusts the LP gas input to provide consistent and endless comfort regardless of your hot water needs. Weighing just 36lbs with the vent assembly, the Suburban Advantage Tankless Water Heater comes standard with TWO freeze protection mechanisms and state-of-the-art, 3-Try Direct Spark Ignition for safe and reliable operation.

Suburban Advantage Tankless Water Heater - developed with INDUSTRY-BEST:

• Microprocessor controlled self-modulating operation from 15,000-60,000 Btu/h
• Precise temperature control from 95-130°F with on demand control center
• Powered (both gas and electric supply required)*
• Non-powered mechanical valve**
• Unmatched installation flexibility
• Small vent cap only to maximize RV skin surface area
• Optional access panels
• 90° Vent kit to install the unit lengthwise

* Active (powered): unit recognizes incoming water temperature at 40° F, turns on and cycles to keep water above 40° F. ** Passive (non-powered): thermally sensitive freeze protection valve opens at 34° F, draining water from the system

The Suburban Advantage Tankless Water Heater is sized to replace any 6, 10, 12 or 16 Gallon Tank models or any 6 or 10 gallon competitive aluminum tank model.

The best RV tankless water heater in 2024

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Glamping in an RV can completely change a person's experience of the great outdoors. RVs provide plenty of creature comforts that you just can't get with a traditional tent setup, not the least of which is running water. While most RVs have water tanks, you'll likely have to do a bit more accessorizing if you want to heat that water up enough to do something like shower. An RV tankless water heater can do exactly that. There are plenty of options out there, so we've wrangled up some of the most popular and accessible heaters in this list below.

RecPro RV Tankless Water Heater - $429.95 (14% off)

Key features.

• Provides instant hot water with no wait
• Features a forced exhaust structure and dust net to keep the air clean as it moves through the tankless water heater
• Utilizes low water pressure startup
• Heated with propane
• "Flame Out Protection" automatically turns off the unit if the flame gets snuffed out
• "Water & Gas Linkage Control" turns off the heat if you run out of water, so you don't use up all your propane or damage the heater
• "Frost Protection" automatically heats the water if the temperature is 43°F or less
• Temperature range from 95°F - 123°F
• Applicable water pressure from 14.5 PSI - 116 PSI

The RecPro option has lots of great features such as a forced exhaust structure and dust net for keeping the air clean as it moves through the heater, low water pressure startup, "flame out protection" and more. It'll even automatically turn off the heat if you run out of water so you don't use up your propane or damage the heater. This unit can provide heat from 95°F - 123°F with water pressure from 14.5 PSI - 116 PSI.

Camplux Tankless Water Heater - $292.12

• 2.64 GPM (Gallons Per Minute) of instant hot water are produced
• Only heats the water when it's being used - no need for preheating
• 6-in-1 multiple protection includes flame-out protection, anti-freezing protection, over-heating protection, air flow pressure switch protection and more
• Utilizes an electronic ignition system and plugs into a standard 120V outlet
• Compact design made for saving space
• Features a digital temperature display
• Camplux offers 24 hour customer service

This Camplux heater provides 2.64 gallons per minute of hot water. Like all tankless water heaters, there's no need for the water to pre-heat, which means it provides instant hot water whenever you need. This one features six types of protection including flame-out protection, anti-freeze protection, over-heating protection and more. It even has a digital temperature display built right in!

FOGATTI RV Tankless Water Heater - $599.99 (28% off)

• Features a high altitude suitability mode, providing usability as high as 9,800 feet
• Staged combustion technology prevents water from getting too hot in the summer and saves on propane
• Produces 2.9 GPM (Gallons Per Minute) of hot water. The supply of hot water lasts over 20 minutes
• Includes a built-in pressure release valve
• Features a wired (2 meters) remote controller
• CSA certified with multiple protection features: built-in forced exhaust fan, stable combustion, automatic gas shut-off and anti-freeze

If you're looking for an RV water heater that'll stay consistent in high altitudes, this Fogatti option is worth a look. It provides usability as high as 9,800 feet. It also features staged combustion technology to prevent water from getting too hot in warm days and will also save you propane. It produces 2.9 gallons per minute of hot water, has a built-in pressure release valve and even features a (wired) remote controller.

Furrion 2.4GPM Tankless RV Gas Water Heater - $650.00

• 2.4 GPM (Gallons Per Minute) capacity
• Delivers hot water on demand "even when the ambient temperature drop to 32°F"
• Built-in sensors automatically turn the heater off if the water temp goes above a safe limit
• " Specially designed for retrofit applications and use(d) as a replacement door for Suburban 4/6 Gallon Water Heater models. This door fits the required dimension of 16.14-inches x 16.14-inches"
• Utilizes Furrion VibrationSmart technology to be able to withstand vibrations caused by rocky or uneven terrain
• Covered by Furrion's 2-year warranty

If you're planning an extra rugged trip, this Furrion tankless water heater is worth a look. It features VibrationSmart tech to help it withstand vibrations caused by rough terrain. It has a 2.4 gallon per minute capacity, can deliver hot water even when the ambient temperature reaches freezing (32°F), and it's specifically designed for retrofit applications and can be used as a replacement door for Suburban 4/6 gallon water heater models. The best part? It's covered by a 2 year manufacturer warranty.

Girard RV Tankless Hot Water Heater - $479.99

• Features an onboard microprocessor to control things like flow rate and outgoing hot water temperature to keep it consistent
• Consumes half the propane gas that a six-gallon tank water heater would 
• Includes a digital user control panel that allows the user to adjust the temperature from 95°F to 124°F and displays error codes
• This water heater "fits in any tank water heater cut-out opening and weights 32 lbs"

The Girard water heater could be a great choice if you're trying to save on propane. This model consumes only about half the propane than a six-gallon tank water heater would. The onboard microprocessor helps to control things like flow rate and outgoing hot water temp and it also has a digital control panel that allows the user to adjust the water temperature from 95°F to 124°F. It also displays error codes if there's ever an issue.

What is an RV tankless water heater?

An RV tankless water heater is just like it sounds. Rather than heating water in a tank, tankless water heaters heat the water instantly as it's moving through the system so no tank is needed. In theory, this system can offer an unlimited supply of hot water (or, at least, it can heat as much water as you have available in your RV).

Why do you need a tankless water heater?

While it's certainly not a necessity to have a hot water heater for an RV, it can definitely make your trips a lot more pleasant. Sure, it's possible to shower with cold water, but it's certainly not fun. As for what makes a tankless water heater more desirable than a traditional heater, the big benefit is that they're often smaller than traditional heaters, which is extremely helpful in a space as compact as an RV. Also, as mentioned above, they heat water instantly rather than requiring the user to wait for a tank of water to heat up.

How does a tankless water heater work?

Water is heated on its way through the pipes of the heater, rather than in a large tank like a traditional water heater.

How do you use a tankless water heater?

First, you'll need to get it installed. How do you install a tankless water heater? Well, unfortunately it can vary depending on the heater. If you're uncomfortable doing this yourself, we recommend speaking to a mechanic familiar with tankless water heating systems.

Pros and cons of using a tankless water heater?

Of course the biggest pro of using a tankless water heater is that you'll have hot water on your excursions! Going the tankless route ensures an "unlimited" and instant supply. However, tankless water heaters can be expensive and a pain to install, so you'll have to weigh the convenience against your budget and your comfort level with moderate-lift DIY projects. 

How much is a tankless water heater?

As you can probably tell from our selections, you'll be able to find water heaters available in a wide range of price options. In general, you can probably find one anywhere from $100 for a budget option to $1,200+ for something a bit more high-end.

See our other guides to the best RV products 

• Best RV covers
• Best RV battery options
• Best RV roof sealants 
• Best solar panels for an RV
• Best RV generator options
• Best RV mattress options

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The best RV tankless water heater in 2024 originally appeared on Autoblog on Tue, 23 Jan 2024 10:20:00 EST. Please see our terms for use of feeds .

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Tankless Water Heater Propane,3.18GPM 12L Outdoor Portable Water Heater,with 2 GPM Water Pump, Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips

Purchase options and add-ons, about this item.

• 【Propane Water Heater】 - This tankless water heater includes a CSA-approved regulator and multiple safety features such as a flame failure device, anti-freeze protection, and overheating protection. It can be used with 12V 2GPM water pump, Comes with 2 pieces of extension hose and fittings,your don't need to buy extra accessories.output 2.11 gallons of hot water per minute, with a maximum temperature rise of 167°F,Designed for use with propane (LPG) only.
• 【Portable Design】 - Our portable hot water heaters are compact and lightweight with folding handles for easy portability. Our Propane Water Heater Perfect for grid cabin,It comes with a showerhead and a pet showerhead and extension hose, ensuring you have the right tool for personal showers and bathing your pets,allowing you to enjoy an amazing hot shower after a long day of camping,Dimensions: 26.8 x 5.7 x 13.8 inches. The outdoor water heater is powered by 2 "D" cell batteries.
• 【Efficient & Energey Saving】-The on demand hot water heater propane exchanger and main burner are desinged with advanced combustion technology to decrease gas consumption and burning noise.Maximum power output 68000btu/hour, you will get instant endless hot water easily wherever you are.Compact and lightweight structure with 11.5% energy saving technology,so you can get more hot water for less money.
• 【Complete Accessories】 - This tankless water heater comes with a CSA-approved 5FT gas regulator and a high-pressure shower head with 5 spray modes. Also included are a 8 spray pet showerhead, a 2GPM water pump with dual power options (9.8ft alligator clip cable and 23ft cigarette lighter cable), 4 pipe adapters, and 2 hoses. The dual power options for the water pump allow for flexible charging and usage, whether you're near a vehicle or using a battery setup.
• 【Widely Application】-Our propane shower is mainly used for outdoor showering with hot water,provides you a safe and comfortable hot shower at anytime and anywhere, Compact and space-saving design is portable for the outdoors, which bringing an amazing hot shower for you when you are camping, hiking, fishing, beaching, grid cabin etc. Besides, you can also wash your pets with this tankless water heater, DO NOT TWINE TEFLON TAPE between gas regulator and gas inlet pipe. Always check gas leakage before operation.

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Tankless water heater installation cost 2024

Rebecca Walter is a senior writer for USA Today Homefront specializing in moving. She has won multiple awards for her writing, including recognition from the North Carolina Press Association for reporting on housing market trends. Her half-dozen moves in the last decade have perfected her packing skills, making her the go-to packer amongst her friends and family. Rebecca studied journalism and political science at Murray State University. She is located in Asheville, North Carolina, where she enjoys hiking, yoga, and reading.

Tankless water installation costs typically range from $2,400 to $5,400.

Size, fuel type, availability, energy efficiency, space requirements and labor can impact the overall cost of tankless water heater installation.

Tankless water heaters are either electric models or gas-powered.

The cost of a tankless water heater is typically around $120 to $2,760. Prices vary based on brand, fuel source (liquid propane or natural gas), warranty type and additional features, such as heat pump technology and energy efficiency.

Tankless water heater installation will typically range from $2,400 to $5,400 — including the appliance, labor costs and other fees — according to estimates from Home Depot.

A recent informal survey found that labor and material estimates for water heater installation range from $1,000 to $3,000, according to Energy Star. Some installers charge a flat rate for installation, but most use the hourly rate plus materials model.

The general rule is that installation cost could be roughly equivalent to the cost of the water heater itself, so keep that in mind when budgeting for the total cost.

Is a tank or tankless water heater more expensive?

Choosing whether to go with a tank or a tankless hot water heater is an important prerequisite of the installation process. A tankless water heater will be more expensive, but cost may not be your determining factor. A water heater with a storage tank holds the hot water until it is ready for use. A tankless water heater doesn’t store any water and only provides hot water on demand. 

Tankless water heaters come in two primary types: condensing and non-condensing. Condensing tankless water heaters use the high-temperature exhaust as an additional way to heat water. These models are typically more heat-efficient and can use cheaper materials such as PVC in the venting pipes. However, these tend to be more expensive overall. 

A non-condensing water heater uses heat exchangers to create hot water and vents the exhaust outdoors. These units require stainless steel flue pipes to handle the heat from the exhaust, which can be more expensive than the condensing type of tankless water heater. They generally have lower installation costs and fewer opportunities to malfunction. 

Which water heater type you install should depend on the needs of those living in your house, according to Mark Collins, CEO of 1-800-Plumber + Air.

“If you want to never run out of hot water, then a tankless could be a good option,” Collins said. “If you never use all of the hot water currently with your tank-type heater, then going back with something similar may be a good option.”

Budget also plays a significant role in choosing the unit type for your home. Our research shows tankless units can be notably more expensive than tank heaters. However, tankless units typically last longer and use less energy, which can positively impact your utility bills.

The chart below breaks down the minimum and maximum average costs for tankless and tank water heaters.

In addition to available space and budget, your region can impact the right water heater type for your home.

“A tankless heater takes up much less space, as it hangs on the wall, compared to a tank-type heater,” said Collins. “In certain markets, primarily in the south, water heaters are installed in attics instead of the garage or basement. This can become a potential flood concern for these homes if they have 50 gallons of water stored in their attic. Oftentimes, these homeowners will elect to go with a tankless water heater to help remove some of this liability from their home.”

Pat Cronin, co-founder of Cronin Plumbing and Heating in Hoboken, New Jersey, agreed tankless systems are gaining popularity in the southern U.S., noting that the model might not fit all climates best.

“In areas with colder winters, electric tankless water heaters are not often an option, as these types of heaters require significant amperage to heat adequate amounts of water to adequate temperatures in cold months when incoming ground water temperatures are low,” Cronin said. “This amperage is not always available without costly modification of an existing home's electrical service.”

Should you hire a professional or DIY for tankless water heater installation?

In an effort to save money, the idea of installing a water heater yourself can be tempting. While homeowners can technically install a new water heater system themselves, it’s not always advised.

“Hiring a professional offers a lot of protection for a homeowner,” said Tom Diciolla, owner of Restore Plumbing and Drain in Elgin, Illinois. “Professional plumbers will be able to help determine and recommend the proper water heater for your home and have been trained to install the product in a professional and safe manner. They will be able to ensure the installation is done to code and is safety compliant and will also carry proper licensing and insurance.”

Diciolla advises homeowners who are considering handling the job themselves to be realistic.

“Homeowners can surely perform some installations themselves, (but) keep in mind that you will need proper tools, knowledge of gas and electrical work, plumbing skills, the physical ability to lift and carry a water heater, and of course, the time to do it,” he said. “Keep in mind, too, that starting an installation you cannot finish will often cost more time, frustration and energy than it would have to hire a professional.”

Professional plumbers will be able to help determine and recommend the proper water heater for your home and have been trained to install the product in a professional and safe manner. Tom Diciolla

Depending on your location, plumbing and electrical permits may be required. Check with your local government about the costs and requirements of any permits. Cost factors and requirements can vary by municipality.

You’ll also need to consider any tools or materials you’ll have to purchase if you do the job on your own. The job requires some common tools you may already have on hand.

Here are some of the materials and tools you’ll need for a DIY water heater replacement:

• Screwdrivers
• Adjustable wrench
• Gloves 
• Safety glasses 
• Voltage detector 
• Pipe cutter 
• Hand truck 
• Wire connectors 
• Plumbers tape
• Pressure gauge
• Pressure-reducing valve
• Plumbing pipe
• Pipe fittings
• Pressure tanks
• Thermal expansion tank
• Garden hose 
• Flexible hose kit
• Drain pan 

Are rebates and incentives available for tankless water heaters?

Taking advantage of incentives and rebates is a smart way to save on water heater installation costs. The federal government offers a tax credit on purchasing and installing heat pump water heaters that earned the Energy Star label. The tax credit is 30% of the cost up to $2,000. It began on January 1, 2023, and lasts through December 31, 2032.

You can also use the Energy Star Rebate Finder to check for additional promotions.

What’s next?

While tankless water heater installations typically have more upfront costs than tank water heater installations, you can save money in the long run thanks to the energy cost savings. Tankless water heaters often have a longer life span than traditional tank models, which can also lead to additional savings over time.

Besides offering energy savings and durability, tankless water heaters are a popular choice for homes with space restrictions and for those needing a constant hot water supply.

Finally, we recommend hiring a professional to handle your new tankless water heater installation. Hiring out the work will help you avoid potential safety risks, additional costs, poor craftsmanship and the huge headache that comes with taking on a home improvement project bigger than you can handle.

Editorial note: The name “Homefront” refers to the alliance between USA TODAY and Home Solutions that publishes review, comparison, and informational articles designed to help USA TODAY readers make smarter purchasing and investment decisions about their home. Under the alliance, Homefront provides and publishes research and articles about home service and home improvement topics.

Homefront has an affiliate disclosure policy . The opinions, analyses, reviews or recommendations expressed in this article are those of the Homefront editorial staff alone (see About Homefront ). Homefront adheres to strict editorial integrity standards. The information is believed to be accurate as of the publish date, but always check the provider’s website for the most current information.

Mike Miller is an editor for USA TODAY Homefront, covering topics that range from moving to gutters and gutter guards. He lives in North Carolina, but as a Minnesota transplant he has firsthand knowledge of long-distance movers’ pain points. Mike has written about home and life insurance providers for Marketwatch, This Old House and Architectural Digest. He also edited three national consumer magazines about natural health and wellness — Alternative Medicine, Eating Naturally and Natural Solutions. He has a BS in creative advertising with a certificate for technology, arts and media. In his spare time, Mike rides his motorcycle, plays with his two cats and spends time with his wife and twins.

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