Best Electric Tankless Water Heater for RV – (June 2022)

After researching for two days, we also communicated with two users of this product, and after using seven products, we suggest that this is the best electric tankless water heater for RVs. All we have experienced is that 20 gallons is best for RV users. We recommend you choose this tankless water heater for the RV that we found.

Here is the Comparison of the Best Electric Tankless Water Heaters for RV



    • Brand: Girard Prod
    • Material: Stainless Steel
    • Power Souce: Wind Powered
    • Best Thing:Quiet brushless motor
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Suburban Sw6De

    • Brand: Suburban
    • Power Source: Gas Powered, Corded Electric
    • Power: 1.440 KW
    • Best Thing: Easy to Install
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Atwood RV GC6AA-10E

    • Brand: Atwood
    • Material: Aluminium
    • Power Sources: Corded Electric
    • Best Thing: Flame Failure Device
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      • Brand: PrecisionTemp
      • Power Source: Wind Powered
      • Capacity: 10 Gallons
      • Best Thing:Flame failure device
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Camplux 5L

      • Brand: Camplux 5L
      • Power Source: Battery Powered
      • Flow Rate: 1.32 Gpm
      • Best Thing:Flame failure device
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Eccotemp i12-LP

      • Brand: Eccotemp
      • Style: ‎Liquid Propane
      • Power Source: AC
      • Best Thing:Horizantal Venting
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Top 6 Best Electric Tankless Water Heaters for RV

Here are the best electric tankless water heaters for RV that are best to use for your home. Let’s discuss this one by one without wasting time.



Features of Girard Water Heater for RV:

Endless water heater: output higher temperature is easy to operate to the desired temperature. Take the hot water and add the cold water to maintain the temperature.

Onboard Microprocessor: One of the best features in tankless water for RV is a board processor, which not only controls the inlet water but also controls the heat required in the winter season for the constant flow. A digital control system can also be controlled with a digital strategy, and temperature can be controlled by 95 to 124F.

Performance: water heater Provide optimum performance of 42000BTU. Performance is best as compared to the other RV tankless water heater. The system operates at 3A 12V power, specially designed for winter use.

Easy access and installation: The hinged door and sliding latch allow fast, easy access on the long road trip to the water heater and are easy to install anywhere you need during the journey. Plumbing is simple, and most users say that they installed it themselves. Most also advise not to mess with the electrical. This is more difficult. If you have no electrical knowledge, you will have to contact an expert to come and wire it for you. can easily be installed. No use of plumbing or gas pipeline is required for the distribution of water heater anywhere in a suitable place.

Low Noise: one of the top reviews of the water heater is low noise. No need to worry while sleeping that it will make noise. Several reviews were that most of the customers forget that something is working there. The water heater is brushed with the more miniature motor.

  • Regulate burner to maintain temperature.
  • No more waiting for hot temperature.
  • Easy to install.
  • Needs design improvement.

Suburban Sw6De (B00T89K6H6)  

After researching for 78 hours and meeting with two recreational vehicle owners, we have selected the suburban SW6DE best electric tankless water heater for RV because of its lightweight, ease of installation, and combination of gas and electric water heater.

An RV water heater is a water heater installed directly in a recreational vehicle, and Suburban is one of the brands that manufacture these products. Because they are easy to install and compatible with nearly all RVs, they have become one of the most popular brands on the market.

suburban Sw6De


The 6-gallon water tank heater is aluminum dressed. Light in weight has a small door from the backside and can reach most of the service parts. Water heater dimensions are Height: 12.5”; Width: 16” and Depth: 16-7/8”. Should not have a problem installing a 6-gallon water heater into any RV. This RV tankless water heater is a combination of both Electricity and gas.

Best Electrical tankless water heater for RV Features:

Outlet water: 

The best electric tankless water heater for RV consists of a 12000 BTU gas burner and a 1440W electric heater. Their recovery rate when using gas is 10 gallons per hour and 6 gallons per hour when using the electric component. But our estimation is this to be about 16 gallons per hour.

Steel Tank: A porcelain-lined steel tank with an insulation jacket for long built into the tank to keep heat in. Further corrosion protection is provided by a replaceable anode rod. The die-shaped metal housing protects the controls from the weather.

FAST Recovery Rate: Fast Recovery of water means the quantity of cold water is low, and hot water output is high. 

Gas Line Connection: Recreational tankless water heater is easy to install because of its size and shape. The pipeline connection for the gas system is effortless. It can easily install by a nonprofessional and will be good to install by a plumber.

Warranty: The system has a 2 Year Manufacturer warranty.

  • Dual power.
  • Fast recovery rate.
  • Not portable.

Atwood RV GC6AA-10E (B00TR5A0PO)

We collect these data Around 50 hours of research and meeting with the users of RV tankless water heaters. This research will quickly show the differences. And you will be able to select the best electric tankless water heater for an RV.

Atwood RV


We have a white door capacity of 6 gallons. The direct spark ignition input is 1400 watts. The recovery rate is 11.6 gallons per hour. On Electric 6.2 gallons per hour. The dimensions of the tankless water heater are 16 inches wide x 12.5 inches high x 16 7/inches.

Features of RV tankless water heater:

Water Pressure: 

During the use of a tankless water heater, most people need the water pressure of that water heater. The force of the water heater should be suitable while using the tankless water heater. Also, it has the best showering experience.

Highly Durable Material: 

When purchasing of tankless water heater, one does not need only the working of the product. Also, customers need quality tankless water heaters. Which material is used for a tankless water heater? This water heater is made of an aluminum rod and protects a tankless water heater for a minimum of 10 to 15 years.

Dual Power Sources: 

This RV tankless water heater has two power sources and is a direct spark system that makes it easier than the tank-based system.

Bearable noise level: 

 The maintainable noise level is another huge plus point for this water heater. If this running in the background, you can sleep happily and without any tension with this water heater.


The tankless water heater is user-friendly while using it. This kind of tankless water heater is a long life.

Temperature Control:

Water can be adjusted at any level while using a temperature control switch. This switch control water temperature according to our need. When you reach that temperature switch, trip the heater.

  • Fuel source provides added flexibility.
  • Powerful water heater.
  • Not portable.

PrecisionTemp RV-550 (B00HRH6T2W)

After meeting with the RV owner and the precision temp tankless water heater user, we found the different qualities in this tankless water heater for the RV.

PrecisionTemp RV-550 (B00HRH6T2W)

Different Applications: This tankless water heater is not only for a specific place. It works on other applications and sites like RVs, tiny houses, small mobile vehicles, and service cabins. The simplicity of manageability means it can be installed in small and compact spaces. It is understood that a tankless water heater is reliable for recreational vehicles because of its size and weight.

Less propane:  Precision temp tankless water heater uses less propane than the other heaters and provides more hot water. Which is the high positive factor in this tankless water heater. Use up to 50% less propane to keep water hot without a tank of water. A 20-pound propane tank will provide about 940 gallons of hot water.

Hot water on demand: Its power reaches up to 55,000 btu. It boasts a flow of 1.5 GPM. Its use is soundless and efficient. It supplies hot water on demand. The heater only operates when the hot water tap is on. 

Electricity Usage: Electricity usage in regular operation is less than 1.5 amps and three amps when the cold weather guard is activated.

Freeze Protecting: A tankless water heater with freeze protection for all-season use. If you want to function at 12 volts, the gas supply should be on.

  • Uses 50% less propane.
  • Automatic gas modulation system.
  • Cold-to-hot delivery takes 7.5 minutes.

Eccotemp I12-LP (B0157EJT28)

Eccotemp i12-LP Water Heater is easy to use and can attract buyers because of its wide range and user-friendly experience.

Eccotemp i12-LP

Temper glass: unit is filled with tempered glass. Led controls are easy to use because of the black front panel. These controls make the entire system simple and easy. Other systems create unease but this system frees you of the anxiety.

Child locks technology: 

This system has a child technology function that saves power and any other loss.

Installation process and Price: installation is straightforward. But professional work is suitable for all.

 3 GPM Tankless Water Heater:

3 GPM Tankless Water Heater has a new ground-breaking design making it unlike any other tankless water heater on the market today. The Eccotemp i12-LP is ideal for vacation cabins, cottages, and lesser homes.

Touch screen: touch screen with an LED temperature display that shows output and input temperature and GPM flow. The tankless water heater is also prepared with child locking technology.

Liquid propane-powered: This predominantly liquid propane-powered indoor model is designed for the small water input to the high amount of hot water production. Where we need multiple points for hot water.

Stainless steel: This system comes with a horizontal stainless steel vent kit.

Outside Cabins: Perfect for vacation cabins, cottages, and smaller homes.

  • It has a water heating capacity of 3 GPM.
  • When idle, it uses nearly minimal energy.
  • The maximum power output is 80 kBTU.
  • a very modern and sleek design.
  • It is extremely simple to set up.
  • Warranty requires regular maintenance.


Outdoor camping is a unique way to keep away from the daily routine work. That keeps the health good. The best electric tankless water heater for RV provides you with a well-organized and straightforward open-air lifestyle.

Camplux 5L

Lowest water pressure:

In this 28000 BTU tankless water heater, pressure starts from just 3.0 PSI. When inlet water is low in force, the heater can adjust in that situation, and the outlet water comes in its original condition. 

Maximum Temperature: 

In RV tankless water heater, there is an option to adjust the output water temperature from 8℃ to 46℃. There is also an option in the heater that water temperature reaches on change heat then controller shut off the heater to heat the water.

Water Heating Cost: 

This advanced water heater provides a 50 percent save on water heating costs. A tankless water heater saves money.

Compact Size: 

This feature of a tankless water heater is outstanding in that it is compact and consists of a folding handle and adjusts it everywhere that you need. Its compact size is power efficient and allows appropriate setup for both indoors and outdoors.

Anti Freezing Protection:

While running the heater, it is necessary having a protection device. That protects the overall accessories in any difficult time. This system has an anti-freezing protection device to keep the system safe.  

Gallons per minute:

You will get 1.3 gallons per minute—a very suitable range for output hot water.

Electricity is not needed: 

With two batteries, the ignition can turn on quickly. And we can get hot water like from Electricity.

  • Low power output (34,000 BTU/hr).
  • Easy and quick installation.
  • Instant, endless hot water.
  • Energy-saving technology.
  • Automatic safety device.
  • Excellent customer service.
  • No ON/OFF switch.
  • Low water flow rate.
  • Instructions are not straightforward.

Features to Consider Before Buying an Electric Water Heater For RV


It’s time to break out the tape measure and ensure that there is enough room to fit in an electric tankless water heater. You will have a lot of space to replace or retrofit an existing classical water heater. It is always preferred to be extra cautious about mounting possibilities and size before installing a tankless heater in a truck that didn’t have one when you purchased it.

Installation Process

Usually, RV owners have to tackle many problems. Therefore, the water heater should not have a very complex setup. Try to choose a device that has an installation process that you can easily learn. Plus, confirm that your chosen device must have the proper accessories for a simple installation, such as a user manual, essential adapters, hoses, showerhead, and fittings.

The water flow rate 

Never overlook the water flow rate of the device you are eyeing. The quantity of warm water delivered per minute by the device is referred to as the flow rate. As an RVer, you will most likely be using the heater for bathing. Therefore, get a model that can provide at least 2 and a half gallons of hot water each minute. Such a model is perfect for RVers with families as well.


If you don’t have the budget to change your water heater every so often, it is strongly advised to give some consideration to durability. You can tell about the life span of the heater by having a look at its finishes, materials, designs, and so on. You better go for some other device if you get a few signs that hint at easily compromised integrity and quality.


Most of the time, customers tend towards products that are fancy and look luxurious and, hence, pay huge cash for them. Later on, they find that the product is useless to them. So, to save yourself from this disaster, be mindful of the cost. Does that particular device match your wants and needs? If it fulfills your requirements, invest in it without a second thought. An electric tankless water heater is a costly investment, but it proves to be a worthwhile one in the long run, especially if you are planning to live for a prolonged time in your RV. 

Frequent Asked Questions

Where would we store it in the RV?

Inside an RV, you may put it beneath the sink. Since it comes in a tiny form, it can fit comfortably into a small space.

What is a tankless water heater, and why is it so popular?

It’s a one-of-a-kind heater since it doesn’t require a large tank to heat.

What are the main benefits of a tankless water heater?

Yes, the sweetest thing here is lower energy use. Do not even you think it’s past time, given the state of our green world?

Is it feasible to heat an entire apartment with only one heater?

It’s possible, and with flying colors at that. However, you won’t run out and purchase a toy-sized heater for a large house, will you?

Will I be able to save money as a result of this?

That’s for sure. It makes a difference, but it is only 5%. On the other hand, intelligent folks would not rest until they have saved a significant amount of money with this product, which is very likely.

Is it possible to convert the RV heater to a tankless heater?

Yes, by updating the system, you may modify it. Before making any changes, you will need to install some new technologies.

How do you keep a water heater in an RV in excellent working order?

The easiest approach to keeping your water heater in good working order is to clean it often and not let accumulation go unchecked for too long.


Although all of the tankless water heaters on our list are outstanding, the PrecisionTemp Tankless Water Heater for RVs is our favorite. It has a wide range of applications, a high flow rate, a large heating capacity, and temperature control.

If you have special demands, though, a separate water heater may be the best option. The best electric tankless water heater for an RV is one that meets your heating, water use, and space needs. Any of the tankless water heaters on our list will offer you dependable service and all of the conveniences of home in your RV shower.

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