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Using a tankless water heater for an RV is a good method for having portable and reliable hot water. The best tankless water heaters for RVs will have multiple power sources, allowing them to be as efficient as models intended for home use. A tankless hot water heater provides hot water within seconds of opening the faucet which makes the choice to invest in one easy.

Choosing the best electric tankless water heater for RV requires some careful considerations. Read below to find out more.

What Is the Best Electric Tankless Water Heater for RV?

There are advantages to owning one of the best electric tankless water heater for RV use and also some things to keep in mind when shopping. Most people choose tankless heaters for a combination of space requirements, efficiency, and convenience. In this article, we hope to give you some information on tankless water heaters and explore some of the best models.

Space

Tankless water heaters take up far less space than conventional models; often tankless water heaters only require a few square feet of space and can be placed into tiny areas in bathrooms or under sinks.When choosing your best electric tankless water heater for RV, this is an important factor to consider.

Capacity

Users should consider the advantage of size against the planned usage. Size is important as you want a tankless heater with enough capacity for the number of people using it while remaining as small as possible. The smallest units may not keep up with several people, only offering a flow rate of half a gallon of hot water per minute.

Energy Use

Tankless water heaters use less electricity than conventional models to heat water, and even propane-heated units take about half the propane. That reduced energy need does not impact the convenience of reliable hot water. There is no waiting for hot water as there is no water tank to heat; the water is heated as it passes through the unit rather than as it sits in a water tank. Electric tankless water heaters are quieter than propane-heated models.

Maintenance and Installation

Consider the ongoing maintenance required such as how the best electric tankless water heater for RVs hold up against leaks, especially if you intend to tuck it under a cabinet or other hard to reach areas. Lightweight models will be easier to install, move, and carry if needed. Ensure the drain valve, if you need one, is high quality and located conveniently. Electric units are easier to self-install than propane models.Be sure to follow all manufacturer’s instructions for ongoing maintenance so your unit stays in good shape and your warranty remains valid.

Pricing

The best electric tankless water heater for RVs range in price from $100 to several hundred dollars. The models we review here range from $165 to $510.

How They Compare

We picked a few similar products available on the market to see how they compare. We looked at some features of the best electric tankless water heater for RVs including price, space and capacity, energy source, design quality, and warranty.

  • Girard 2GWHAM On-Demand Tankless Water Heater Specs
  • EZ 101 Tankless Water Heater
  • Eccotemp L10 2.6 GPM Portable Tankless Water Heater
  • New Suburban Sw6De 6 Gallon Dsi Electric Ignition

Girard 2GWHAM On-Demand Tankless Water Heater

GIRARD 2GWHAM Tankless Water Heater
  • Regulates the burner to maintain the set hot water temperature
  • NOTE: Water heater door is not included and must be ordered with Girard's 2GWHAM Water Heater
  • 42,000 BTUs which provides the optimum performance for an RV's plumbing

The Girard 2GWHAM On-Demand Tankless Water Heater is a small, tankless water heater designed for RVs. Its performance is geared for RVs at 42,000 BTUs and there is no need for specialized plumbing or gas lines. It runs on 12V power at less than 3 amps and propane.

This tankless water heater measures 15.5 inches x 22.5 inches x 12.5 inches and weighs just 22 lbs. The installation is easy; it features a hinged door and adaptation to existing space is easy. It comes with freeze protection for very cold temperatures. It is not as portable as some other models that feature battery ignition but offers far hotter water capacity at 2.64 gallons per minute which is far more than is needed for modern shower heads.

The Girard 2GWHAM On-Demand Tankless Water Heater stands out as one of the best electric tankless water heater for RV use thanks to its modern technology. There is an onboard microprocessor that regulates water flow and temperature for inlet and water temperature at the outlet and regulates the burner. The user sets the desired temperature and the water heater manages the rest. It has an LCD display for controls and information.

  • Space and Capacity
  • Energy Source
  • Design Quality
  • Warranty

5 out of 5 Stars

The Girard 2GWHAM On-Demand Tankless Water Heater measures 15.5 inches x 22.5 inches x 12.5 inches and weighs just 22 lbs. It offers an output of two 2.64 gallons per minute, enough for multiple outputs.

4 out of 5 Stars

This is a propane tankless water heater with a 12V power input. The Girard 2GWHAM On-Demand Tankless Water Heater will work well off the RV power but does not run off batteries.

5 out of 5 Stars

Thoughtful design with adaptations for existing space and compact size is supported by reliability and a two-year warranty on the Girard 2GWHAM On-Demand Tankless Water Heater.

5 out of 5 Stars

The Girard 2GWHAM On-Demand Tankless Water Heater comes with a two-year limited warranty.

PROS

  • Instant hot water
  • Designed for RV use
  • Easy to install
  • Silent motor
  • Excellent warranty
  • Great water flow output

CONS

  • Expensive
  • The heater may not activate at low inflows
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EZ 101 Tankless Water Heater

EZ 101 Tankless Water Heater - Propane (LPG) Gas - 2 GPM - Small -...
  • Battey Powered Ignition - 2 "D" Cell Battteries Not Included
  • Great for use at campsites, while fishing, while hunting, or any where hot water is needed.
  • Easy Portability - Only 14 LBS

This affordable, small tankless water heater is perfect for outdoors and RV use without requiring major investment. The EZ 101 Tankless Water Heater is a portable, propane heater with an electric ignition powered by “D” cell batteries. It does not require an electrical connection. It automatically activates when the hot water tap is opened and turns off when the water tap is off and has a 20-minute safety shut off timer.

Users report that this model may be prone to freeze at cold temperatures and others state the flow rate is low.

  • Space and Capacity
  • Energy Source
  • Design Quality
  • Warranty

4 out of 5 Stars

The EZ 101 Tankless Water Heater is portable at only 14 lbs and measures about 5 inches x 12 inches x 17 inches. It runs at about 1.6 gallons per minute, which will run a low-flow faucet or showerhead.

5 out of 5 Stars

The EZ 101 Tankless Water Heater runs off a standard propane tank power backed by two “D” cell battery powered ignition. It is designed for travel.

5 out of 5 Stars

The design quality of the EZ 101 Tankless Water Heater is simple and decent and is backed by a one-year warranty. It is easy to install and fits easily in small work and living spaces.

4 out of 5 Stars

The EZ 101 Tankless Water Heater comes with a one-year limited warranty.

PROS

  • Affordable
  • Simple to use and install
  • Portable
  • Automatic safety shut offs
  • Auto on and off
  • Quickly heats water
  • Works at low water pressures

CONS

  • May freeze at cold temperatures
  • Low flow rate
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Eccotemp L10 2.6 GPM Portable Tankless Water Heater

Eccotemp L10 2.6 GPM Portable Tankless Water Heater, 1 Pack, White
  • Includes 9' CSA approved gas regulator and hose for use on a standard 20 lb grill style tank
  • Includes stainless steel rain cap; 74,500 BTU's
  • Includes 1/2" NPT to garden hose adapter

The Eccotemp L10 2.6 GPM Portable Tankless Water Heater is a lightweight and compact tankless water heater that runs on liquid propane and has an electric ignition that is powered by “D” cell batteries. It is rated to an output of 2.6 gallons per minute, which will easily run a sink or shower. The output temperature range is 50-140 degrees Fahrenheit. This is a great off-grid tankless water heater as it does not rely on electricity.

It also features a safety shut-off valve that activated automatically after 20 minutes or a 45-degree tilt in any direction. It will automatically stop when water input ceases and automatically start again when the flow resumes. This tankless water heater works at pressures as low as 20 psi and will connect to garden hoses that are a standard thread.

Users have noted that temperatures will fluctuate in windy conditions and that the battery box could be sturdier. The Eccotemp came in second on our review of the best electric tankless water heater for RVs.

  • Space and Capacity
  • Energy Source
  • Design Quality
  • Warranty

5 out of 5 Stars

The Eccotemp L10 2.6 GPM Portable Tankless Water Heater measures at 25.50 inches x 13.75 inches x 8.00 inches and weighs about 27 lbs. It is tiny and lightweight, but still provides a 2.6 gallon per minute minute capacity.

4 out of 5 Stars

The energy source for the Eccotemp L10 2.6 GPM Portable Tankless Water Heater is a 20 lb liquid propane tank and two “D” cell batteries for the electronic ignition. It works off-grid as well as it does on. The ability to also connect with a 12V battery would be preferred.

4 out of 5 Stars

Overall, the Eccotemp L10 2.6 GPM Portable Tankless Water Heater is made of a durable design backed by a one-year warranty. It is durable and portable. We removed one star for the temperature fluctuations in windy conditions and the poor quality battery box.

4 out of 5 Stars

The Eccotemp L10 2.6 GPM Portable Tankless Water Heater comes with a one-year limited warranty.

PROS

  • Unlimited hot water
  • Works off-grid
  • Multiple safety shut offs
  • Will not overheat
  • Stainless steel rain cap
  • Easy to install
  • Food water pressure

CONS

  • Temperatures will fluctuate in wind
  • Battery box poor quality
  • Sensitive to water flow
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New Suburban Sw6De 6 Gallon Dsi Electric Ignition

The New Suburban Sw6De 6 Gallon Dsi Electronic Ignition Water Heater is a combination electric and gas water heater that has maximized efficiency balanced with the output. This model has a 2-gallon flow rate, is 12.75″ wide x 12.75″ high x 19 3/16″ deep and weighs 33 lbs. It stores up to six gallons and provides quick recovery of 10 gallons per hour.

The New Suburban Sw6De consistently ranks as a favorite among RV owners because of its durability and quality design; however, it is not a truly tankless design.

  • Space and Capacity
  • Energy Source
  • Design Quality
  • Warranty

3 out of 5 Stars

The New Suburban Sw6De 6 Gallon Dsi Electronic Ignition Water Heater is 12.75″ wide x 12.75″ high x 19 3/16″ deep and weighs 33 lbs. The outflow capacity of this unit is more than enough for a hot shower at two gallons per minute flow rate; however, it holds just six gallons and although has a quick recovery time, it is still limited in the amount of hot water it can provide.

Unfortunately, it is heavier, bigger and provides less hot water than the others we reviewed.

4 out of 5 Stars

Combination gas and electric means faster heating, but reliance on an electrical hookup. For this lack of off-grid ability, we removed one star for the New Suburban Sw6De 6 Gallon Dsi Electric Ignition Water Heater.

5 out of 5 Stars

The design quality on the New Suburban Sw6De 6 Gallon Dsi Electric Ignition Water Heater is tried and trusted by RV owners. It is high quality and attractive design that works great for what it is. It is backed by a two-year warranty.

5 out of 5 Stars

The New Suburban Sw6De 6 Gallon Dsi Electric Ignition comes with a two-year limited warranty.

PROS

  • Easy install
  • Affordable
  • Energy efficient
  • Works well for RVs
  • High quality

CONS

  • Not tankless
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Conclusion

Choosing the best electric tankless water heater for RV living just requires a little research. A tankless water heater is a great investment, reduces energy use, and increase convenience when traveling.

We found the Girard 2GWHAM On-Demand Tankless Water Heater to be one of the best electric tankless water heater for RV use. If the Girard is too cost prohibitive or you would like an off-grid capacity model, consider the Eccotemp L10 2.6 GPM Portable Tankless Water Heater.

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