Best electric tankless water heater for rv

For a comfortable shower and other household works, we often need warm water. The best option for this is a tankless water heater. Especially, during the winter season, water heater becomes an inseparable part of our daily usage.

Conventional water heaters take a lot of space. Again, they come with storage tanks. Hence, there is a possibility of it being empty in the middle of use. But the tankless water heaters are much more convenient.

They do not need any extra space and easily installed anywhere without worrying about ventilation and leakage. As it does not come with an in-built water tank, you will get a continuous outflow of warm water. However, this can cut off a lot of your utility bills.

So, if you are thinking to buy the best electric tankless water heater for rv we are here to help you. We have included rv tankless water heater pros and cons in our article.

Let’s proceed.

15 Best Electric Tankless Water Heater For Rv below

Let’s check out the best tankless water heater for rv to discover the best electric tankless water heater for RV.

1. Camplux Enjoy Outdoor Portable Tankless Water Heater

best electric tankless water heater for rv

The Camplux tankless water heater comes with a foldable handle. So, it is easily portable and can be used outdoors. It only needs 3 PSI water pressure for its start-up. This runs on a Lithium battery, having an average battery life of 180 days.

This water heater works well with the Camplux 12V 1.2 GPM water pump. This small electric water heater has a water outflow capacity of 1.32 gallons per minute. Moreover, it is featured with a flame failure device, anti-freezing protection and safety shut protection during oxygen reduction.


  • It can raise the temperature at a maximum of 114.8-degrees F and a minimum of 46.4-degrees F.
  • The wall-mounted water heater is white colored which is very stylish.
  • It comes with 0.4 PSI propane gas pressure which has 28,000 BTU per hour maximum power output.
  • It works great on low water pressure.
  • It is portable and fit for outdoor use.
  • Consume less fuel than a stove.
  • It is not suitable for drinking water.
  • It does not work well above 2000 feet elevation level.

2. Bosch Electric Mini-Tank Water Heater

This Bosch electric water heater comes with a mini tank of 4 gallons. So, people with a low space can easily fit this tank under their sink. Since the tank is small, it can be well fitted in a rack, wall, or floor with ease with the help of a bracket.

This water tank is capable of providing hot water instantly. It takes a very little amount of time. It can provide up to 2-sink hot water simultaneously. Moreover, the tank of this white color heater is glass-lined. Hence it looks more stylish. It includes all essential rv water heater parts.


  • It has a thermal efficiency of 98%. So, the wastage of energy is very minimum.
  • It has excellent build quality. The glass-lined tank increases the longevity of the heater.
  • It is capable of proving warm water at a faster speed.
  • Comes with 6 years warranty along with 2 years parts warranty.
  • The installation procedure is very easy.
  • Comes with a safety valve for temperature and pressure relief.
  • Have leakage issues after a few months of use.
  • This is not a great choice for a shower.

3. GIRARD 2GWHAM Tankless Water Heater


The Girard tankless water heater the burner maintain the water temperature. This is featured with 42000 BTU which is efficient enough for RV plumbing. Moreover, it comes with freeze protection technology. As result, it can be effectively used during winter.

This Winterizing Girard tankless water heater weighs about 21.2 pounds having a dimension of 14.5 x 17.8 x 14.6 inches. There is no need for any extra LP gas lines for this heater. The Girard tankless water heater for rv comes with 12 V power. However, it can easily run in a powerless than 3A.


  • It comes with onboard micro-processor which keeps the track of incoming and outgoing water temperatures.
  • The digital controller is wall-mounted which allows to change the temperature settings.
  • The user control panel allows the visualization of the error which enables easy rv water heater troubleshooting


  • The temperature can be set in both Celsius or Fahrenheit scales.
  • No hassle in opening the water heater door.
  • The installation process is simple.


  • The product does not include any water heater door.
  • It cannot cope with all types of water flow.

4. Suburban Manufacturing Water Heater

Manufacturing Water Heater

The suburban rv water heater is the best electric tankless water heater for rv that comes with a 6-gallon water tank. It is featured with 12000 BTU input. This water heater has a very high recovery rate which is about 10.2 gallons per hour. Moreover, this heater uses a direct spark ignition gas heating system.

From the suburban tankless water heater reviews, we found that it is a bit heavy. It weighs about 35.7 pounds. The dimension is about 19.19 x 12.7 x 12.7 inches. Besides the tank is made with porcelain for ensuring durability.


  • The tank is made with porcelain-lined steel, which is extremely durable and heat resistant.
  • For soaking up the electrolytic action, an anode rod has been used.
  • It is tested twice to make sure that it can withstand maximum pressure.


  • It runs on both gas and an electric power source.
  • The installation process is very easy.
  • Build quality is impressive which ensures the lifetime of this heater.
  • It comes with a 3-year limited warranty.


  • This product does not come with any relay for a 110 Volt power supply.
  • The pressure-relief valve sometimes needs to be readjusted.

5. EZ 202 Tankless Water Heater

EZ 202 Tankless

This EZ 202 water heater is specially designed for easy portability. It is only 15 lbs. in weight. It does not require any plug-ins. Hence it can be used when you go out hunting or fishing. However, if you set it up in an open space, it won’t be very noticeable.

The water flow rate of this heater is about 3.2 gallons per minute. It can provide continuous warm water flow at a 45-degree Fahrenheit rise.  It also works great at low pressure at a minimum of 2.9 psi pressure. The heater uses electricity from two “D’ cells for its ignition.


  • It comes with a ‘no pilot light’ design, which is very safe and handy.
  • It is featured with an automatic ignition system which cuts off the electricity bills.
  • It has an elegant looking design.


  • It is lightweight, so it can be used easily outdoors.
  • Simple installation and easy to operate.
  • No leakage issues have been noticed.


  • It requires a converter for the propane attachment.

6. Marey Propane Gas Tankless Water Heater

Propane Gas Tankless Water Heater

The Marey propane gas water heater covers gas to the electric water heater. As the best electric tankless water heater for rv runs on both natural and propane gas. It does not require any electrical power source. All it needs is a 2-D cell battery to ignite the fuel of the heater. It does not store any water.

Rather, it heats the water whenever you are in need of it. So, it saves a lot of energy. It is designed in a close-packed style. As a result, it does not require much space. Moreover, it has a flow rate of 2.7 gallons per minute with an output temperature of 115°F.


  • It comes with multiple points of usage providing the opportunity to perform various household works at the same time.
  • The white color water heater is very eye-catching.
  • It is designed in a way for saving up space.


  • The installation process and usage is very simple and easy.
  • Comes with a 5-years warranty.
  • Build quality and design is satisfactory.


  • The flow rate is not up to the mark.
  • The temperature setting is not customer-friendly.

7. EcoSmart ECO 11 Electric Tankless Water Heater

EcoSmart water heater

The ecosmart tankless water heaters weigh only 6.5 pounds. Since it is wall-mounted and small, so, it takes very little space for its setup. It is turned on whenever needed. So, no need to worry about the extra bills, and for this, we consider it as the best electric tankless water heater for rv.

The water heater has an excellent flow rate ranging between 1.3 to 3.1 gallons per minute. This water heater can be used in colder areas. It is specially designed for a water temperature of 67 Degree F and higher. Moreover, it comes with a digital temperature controller.


  • It comes with Patented Self Modulating Technology which is very modern and advanced.
  • The efficiency rate of this heater is about 99.8 % so it performs well consuming less energy.
  • It is designed in such a way so that it can save space.
  • It is capable to cut down the electricity bills up to 50%.


  • It comes with a lifetime warranty.
  • It is suitable for households.
  • Very good in case of energy saving.


  • After few months of use, there is a slight leakage problem.

8. Eccotemp i12-LP water heater

Eccotemp heater

The Eccotemp i12-LP water heater designed with a touch screen LED display which allows you to know the temperature and GPM flow. The front panel of the water heater is made of black laminated glass. It is equipped with liquid propane to produce small to medium hot water which is perfect for a small house and cottages.

This water heater provides 0.6 to 4.8 gallons per minute.  It is fully automated and turns on when the user needs it, making efficient use of energy. The Eccotemp i12-LP uses up to 2watts when idle and 1.07amp to 2amp when it is running.  


  • The temperature is controlled automatically.
  • It comes with child locking technology.
  • Provides horizontal stainless steel vent kit making it easy to install.
  • Elegant design with a front panel made of black tempered glass.


  • It comes with 2years warranty.
  • It flows up to 4.8 gallons per minute.
  • Use less energy.


  • After using it for a few months, Pinhole leaks are visible in the thin copper pipe.
  • The heat exchanger freezes when the surrounding temperature drops below freezing.

9. Camplux Propane Gas Tankless Water Heater

Camplux water heater

The Camplux propane gas water heater has an innovative and versatile design that provides portability and saves energy at the same time. This is a perfect tool not only for camping and outdoor vacations but also can be installed indoors. It can be ignited with both electricity and 2 “D” cell batteries.

It provides an amazing performance with great efficiency including 2.64 gallons per minute hot water output and maximum power output for 68000 BTU per hour. This is an eco-friendly water heating device that can save 11.5% of energy approximately.


  • Eco-friendly and flame failure device.
  • It gives protection for dry combustion and anti-freezing.
  • Provides thermal efficiency of 88.5%.
  • Gas regulator and necessary adapters are included with the water heater.
  • The dimension of this water heater is 11.42 x 4.33 x 14.8 inches.


  • Lightweight and easily portable for outdoor activities.
  • It does not consume much space.
  • Can be used both indoors and outdoors.


  • It is less suitable for higher altitudes over 2000ft.
  • RV water heater troubleshooting suggestions in the manual do not guide properly.

See also: Rinnai rur199in review

10. Eccotemp FVI12-LP Liquid Propane Gas Tankless Water Heaters


The Eccotemp company is widely known for manufacturing products that are eco-friendly and space-saving. This water heater instantly heats up the water using the exquisite amount of propane flame. The included Horizontal Vent Kit can be easily set up indoors.

The size of the water heater is very convenient and requires a small space. So, it is an ideal tool for using in smaller spaces like cabins, apartments or even your houses. If you are looking for a budget-friendly small electric water heater, this will be a great option for you.


  • Its dimension is 15.25 x 6 x 24.75 inches.
  • Shows the temperature on the digital display.
  • It easily fits into the 120-volts electricity making it a safe option for ignition.
  • The flow rate is 4 gallons per minute.
  • After passing the heat exchanger, the water heater can produce hot water immediately.


  • Eccotemp company Provides 2years warranty.
  • It consumes less space.
  • This water heater is an energy-saving product.


  • It does not provide child-lock technology.
  • It consumes an exquisite amount of propane flame.

11. EZ 101 Tankless Water Heater

EZ 101

EZ 101 Tankless Water Heater is a suitable hot water heater for campers. It is light-weight and can easily be portable in situations like camping, hunting, and other outdoor activities. This product requires a standard LP (propane) tank to operate.

It keeps the casing temperature normal by pulling air from the surroundings. It is designed with three dials to adjust the water temperature, flame intensity, and the number of burners.

This portable water heater can also function in low water pressure. This product is great for using in places where there is shortage of electricity.


  • This tankless water heater has a minimalistic design.
  • It is very handy and portable.
  • It is designed with an automatic ignition system.
  • It flows up to 2 gallons per minute at a 35-degree temperature rise.


  • One of the advantages of this heater will be that it is convenient and portable, unlike most other heaters.
  • 2 “D” battery cells are used for ignition.
  • It is affordable.


  • The heater fails to sustain hot water for a longer time.
  • It does not come with a propane regulator.

12. Excel Pro Tankless Gas Water Heater

Excel Pro

Excel Pro is a 110 volt tankless water heater for RV which is a built-in small-scale size but strong enough to produce a good amount of hot water. This water heater can fulfill the demand of a small or medium-sized house or apartment with a maximum pressure of 150 PSI. This Excel tankless water heater for rv will ideal for you.

The flow rate of the water varies as the user adjusts the water heater in the display panel according to his or her needs. It supplies 6.6 gallons per minute of hot water at 35 degrees Fahrenheit. The digital display of this water heater displays the temperature is in Fahrenheit except in European Model which is Celsius.


  • It requires at least 0.5 gallons per minute of water flow to start the electronic ignition.
  • Featuring the temperature at Fahrenheit or Celsius.
  • The display of the water heater is LCD.


  • This water heater provides up to 140,000 BTU per hour.
  • The ignition requires a minimum of 0.5gallons per minute for electricity to start the water heater.
  • It runs on natural gas.


  • After the use of a few months, small leakages are observed valve flare connection.

13. Rinnai RU80EN Ultra-NOx tankless water heater

Rinnai RU80EN Ultra-NOx tankless water heater

Rinnai RU80EN Ultra-NOx tankless water heater is known for heating water more efficiently compared to other water heaters available in the market. The dimension of this water heater is 18.5 x 26 x 10 inches which weigh 61.7lbs or 28kg.

It can be installed outdoor. It has temperature ranges for both residential and commercial types. While the residential type ranges from 98 to 140 degrees Fahrenheit, the commercial ranges from 98 to 185 degrees Fahrenheit. It can be used at high altitudes up to 10,200ft.


  • The residential water heater has a warranty of 12years on the heat exchanger and 5years on parts.
  • The commercial water heater has a warranty of 5years on the heat exchanger and 5years of parts.
  • The flow rate of this water heater is 4.2 to 5.9 gallons per minute.
  • It comes with both natural and propane gas which has 152,000 BTU per hour.


  • It can be used outdoors.
  • Suitable for use in high altitudes.
  • It provides efficiency for up to 97 percent.


  • Since it is quite pricey, it can’t be accessible by everyone.

14. Rinnai V65IN Tankless Water Heater

Rinnai V65IN Tankless Water Heater

Next on our list, we have Rinnai V65IN Tankless Water Heater. You can easily regulate the timing and the schedules of the device through a mobile app. This Rinnai tankless water heater guarantees you an endless hot water facility on demand.

It is designed in a compact way which allows you to install it indoors even in non-traditional spaces. It consumes 40% less energy and saves water, thus making it an eco-friendly device.

Investing in this product will be a smart decision as it gives you a long-term warranty of 120 months for the heat exchanger and 60months for its parts.


  • It has an excellent flow rate of hot water 6.5 gallons per minute.
  • Featured with Control R mobile app.
  • Both indoor and outdoor versions are available.
  • It can be used by either propane or natural gas.


  • It is a sustainable and durable device that guarantees 120months of warranty.
  • It is budget-friendly.
  • Saves a lot of energy and water.


  • Installation process is difficult.
  1. Precision Temp RV-550 Tankless Water Heater.

15. PrecisionTemp RV-550 Tankless Water Heater

Precisiontemp water heater

Precision temp rv-550 tankless water heater weighs only 32 pounds. This light-weighted water heater requires half-space and weighs one third compared to 10 gallons water heater.

This water heater will always provide hot water when the user needs it. This water heater has a unique gas modulation built in which automatically adjusts the temperature of the water and water flow according to the users’ demand.

This modulation maintains a balanced temperature of water without any overheat issues in summer or lacking hot water in winter. For daily use in normal temperature, it consumes 1.5amp of power, and 3amp of power consumed if cold weather protection is turned on.


  • Can be installed easily on walls.
  • It can be used indoors only.
  • Its dimension is 13.5 x 13.5 x 14.25 inches.
  • Its main power source is propane gas.


  • Constantly provides water as the user demanded.
  • It requires less space.
  • Comes with freeze protection which can be used for 4 seasons.


  • The RV-550 automatically shuts off in longer usage.
  • The price is less budget-friendly for everyone to buy.

FAQ: Best Tankless Water Heater

1. Is Tankless Water Heater Bad For Your Home?

There is no storage facility in a tankless water heater so there is no need for continuous heating. As a result, it does not waste electricity.

2. Is Tankless Water Heater Easy To Install?

Most of the tankless water heaters are wall-mounted. Electric tankless water heater units are easier to install in comparison to Gas units as it needs to be vented.

3. What Is The Life-Span Of A Tankless Water Heater?

The life span of a tankless water heater is about 10-20years depending on the usage, water quality, and climate of that place. But some of the tankless water heaters come with freeze protection, like PrecisionTemp RV-550 Tankless Water Heater.

4. What Are The Benefits Of Tankless Water Heater?

The user can get access to hot water immediately. The tankless water heater is more efficient by producing an unlimited amount of hot water when needed.

5. Does Tankless Water Heater Work In High Altitudes?

Rinnai RU80EN Ultra-NOx tankless water heater works great in high altitudes up to 10200ft. However, the tankless water heater loses its efficiency at higher altitudes.

6. Can You Heat The Entire House With One Tankless Water Heater?

You need to choose the model of the water heater wisely taking into consideration the size of your house. For 1 bathroom, you need a water heater with 140000 BTU whereas for 3 bathrooms, a water heater with 380000 BTU.

Final Words!

In this article, we sorted out the 15 best electric tankless water heater for rv. Choose wisely keeping your priorities and budget into consideration. Try to invest in a product that is eco-friendly and beneficial for your house.

Hope you will be able to find the ideal tankless water heater for your home and have an endless supply of warm water. Thanks!

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