Best Tankless Water Heater For RV in 2022 – Reviews & Buyer Guide

Are you an RV owner and need hot water for your RV? Travelers need endless warm water to ensure comfort during traveling. Specifically built tankless water heater for the RV system provides a big solution.

These tankless water heaters come with a large number of functionalities, of course. A typical water heater can only hold a limited amount of warm water. But, if your group contains 5 or more people, you need a specific water heater designed for outdoor usage.

At a Glance:

We have separated the 10 best tankless water heaters for RV in 2022 that have enough capacity to meet your outdoor demand. Like other tankless water heaters, these specific heaters use different fuel sources to provide unique services. These are simple to use and provide unlimited warm water for unlimited usage.

Our Recomendation for Best Tankless Water Heaters for RV

Here is the list of the best tankless water heater for RV that might be your next choice.

AwardDesignTankless Heater BrandsRetailer
Best propane tankless water heater for rv
Staff Pick1. Marey GA10LP Power 10L Propane Gas Tankless Water Heater
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Best tankless gas water heater for rv
Budget Pick2. Rinnai RU80EN tankless water heater
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Best whole house tankless water heater for rv
3. Gasflex Excel Pro Tankless Gas Water Heater
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Best indoor tankless water heater for rv
5. Eccotemp FVI12-LP Tankless Water Heaters
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Best electric tankless water heater for rv
6. EcoSmart ECO 11 Electric Tankless Water Heater
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Best outdoor tankless water heater for rv
7. GASLAND BE158 Tankless Water Heater
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Best mini tankless water heater for rv
8. Bosch Tronic 3000 T Electric Mini-Tank Water Heater
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Best hot water tankless water heater for rv
9. Rinnai V65iP Tankless Hot Water Heater
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Best 120V tankless water heater for rv
Best Pick10. Rinnai RUC98iN Ultra Series Tankless Water Heater
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1. Marey GA10LP Power 10L Propane Gas Tankless Water Heater

Staff Pick

Best propane tankless water heater for rv

Marey GA10LP Power 10L Propane Gas Tankless Water Heater
Marey GA10LP Power 10L Propane Gas Tankless Water Heater
Item Weight :‎21 pounds
Product Dimensions :‎6.9 x 13.6 x 23.6 inches
Color :‎White
Batteries Included? :‎No

Marey is considered one of the best tankless water heaters for RV as it enables you to manage the temperature. It comes with an extended warranty that keeps the user tension-free. Plus, this heater uses propane as the power source, relaxes your bill of electricity.

Flow rate

This is a medium-priced water heater that has a flow rate of 3.1 GPM. If your family is not too big and owns a medium level of hot water usage, this Marey model is ready to serve you well.

Saving

It is an energy-efficient unit that keeps your electricity bill controlled, and it would cut down the electricity cost up to 60 percent. This feature makes it the best energy-saving water heater.

Easy to Install

A compact and sleek design that offers easy and quick installation. Moreover, the system provides a DIY installation that saves you extra money as it does not require any professional to install it.

Power source

The power source of this functional heater is propane gas. You have no need to arrange for electricity for its work. So, if you have short of electricity, then get this heater, and it would not disturb you.

Fixtures

It offers you to enjoy multiple connections at a time. So, you can get this heater without overthinking.

Efficiency

It is equipped with advanced technology that provides hot water quickly and efficiently without wasting your time.

Pros

  • Easy to use
  • Great energy saving
  • Space-saving design
  • Instant warm water
  • Installation is simple

Cons

  • Low flow rate
  • The battery panel profile is not good
  • Not for extremely cold areas

2. Rinnai RU80EN tankless water heater

Budget Pick

Best tankless gas water heater for rv

Rinnai RU80EN tankless water heater
Rinnai RU80EN tankless water heater
Item Weight :‎70.5 pounds
Product Dimensions :‎18.5 x 10.7 x 26.4 inches
Size :‎Large
Color :‎Silver
Power Source :‎Gas Powered
Batteries Required? :‎No

A good-looking and smart design that enhances the beauty of your RV and home where you place it. This product is safe for the environment with a good flow rate. It produces a very little amount of nitrogen oxide that makes it safe for the environment.

Technology

This model of Rinnai delivers good efficiency due to the ingenious condensing technology. This is a very special feature that saves a significant amount of energy every time you get its servings.

Thermal efficiency

Note that the thermal efficiency of this model is 97 percent. You know, it is a good limit to consider.

Safe

This water heater is safe for the environment as it produces a very low amount of nitrogen oxide in the surrounding.

Flow rate

The flow rate offered by Rinnai RU80EN is 8 GPM. This limit is enough to manage your medium to a big family.

Recirculation

It features a recirculation system that allows water to recirculate to produce very hot water. Plus, the same system comes forward to provide instant hot water.

Installation

It has been built for outdoor installation purposes. Though the mounting is not complex, yet we suggest you hire a professional to skip future frustration.

Pros

  • Environment friendly
  • Maximum energy saving
  • Easy installation
  • Temperature lock function
  • Good flow rate
  • Low long term damage

Cons

  • Very pricey
  • Large size

3. Gasflex Excel Pro Tankless Gas Water Heater

Best whole house tankless water heater for rv

Gasflex Excel Pro Tankless Gas Water Heater
Gasflex Excel Pro Tankless Gas Water Heater
Item Weight :‎39.6 pounds
Product Dimensions :‎14.5 x 5.5 x 23 inches
Flow Rate :‎6.6 Gallons Per Minute
Water Consumption :‎6.6 Gallons per Minute
Power Source :‎AC
Voltage :‎110 Volts

Gasflex has come with a pro water heater that has a robust profile and soft look. Connect it with the source of natural gas and it would serve you with hot water in return. Its thermal efficiency is really amazing which makes it a handy product.

Flow rate

Gasflex is introducing a model that has a flow rate of 6.6 GPM. This capacity can happily serve a family of 5 or more members. Plus, you can use it for commercial purposes.

Power source

Note that its internal design is such that accepts natural gas as a power source. Now, you have not worried about the cost of electricity. Use this heater and it would not disturb your electricity bill.

Construction

The internal heat exchanger and other construction components are made of copper. This material is very active to make it a powerful and durable unit.

Display

It lets you keep an eye on the temperature. It’s time to be glad because you are going to see the temperature on the Celsius scale.

Installation

You are ready to mount it sideways or vertical style with the help of CAT III made of stainless steel. It is recommended to hire an expert to get its flawless installation.

Pros

  • Looks very good
  • Good water flow
  • Has grass reducer
  • Features horizontal venting
  • Serve multiple connections at a time

Cons

  • Price is too high
  • Pressure is low

4. Camplux 5L Propane Tankless Water Heater

This model of Camplux is safe to use and serves instant hot water. It is not very pricey and delivers excellent work. You can manage the temperature according to your demand very easily.

Certification

This unit enjoys CSA safety. It can be said that CSA has verified this water heater very safe to use.

Temperature range

This small water heater offers a temperature range from 46.4 F to 114.8 F. You can manage the temperature between these two limits according to your demand.

Flow rate

You are ready to enjoy the flow rate of 1.32 GPM. Though this is not very high but sufficient to fill the need for a small house. You can say that it is enough for 3 to 3 people.

Design

Its profile is too compact to fit at any place. Plus, Camplux features a foldable handle. This setup is extremely easy to manage.

Protection

This model comes with a large number of protective features. These include overheating protection, flame failure protection, anti-frozen protection, dry combustion protection, low water flow protection, and high water pressure protection.

Technology

This unit has a very smart technology that is extremely specialized to save energy. Amazingly, it provides instant warm water where ever you want.

Pros

  • Compact profile
  • Ideal for camping
  • Safe to use
  • Good for off-grid
  • Less in price

Cons

  • Not very durable
  • Very small size

5. Eccotemp FVI12-LP Tankless Water Heaters

Best indoor tankless water heater for rv

Eccotemp fvi12-NG FVI-12 Tankless Water Heater
Eccotemp fvi12-NG FVI-12 Tankless Water Heater
Item Weight :‎33 pounds
Product Dimensions :‎25 x 14.5 x 4 inches
Size :‎4.0 GPM
Power Source :‎Gas Powered
Voltage :‎110 Volts
Water Consumption :‎3.5 Gallons per Minute

Eccotemp is introducing a fantastic model that has the status of UL listing. You can install it indoors and get full devices. Not only has it had a good profile, but it is very attractive to look at too.

Flow rate

This model of Eccotemp features 6.3 GPM as the maximum flow rate. Note that the minimum flow rate offered by this water heater is 0.65 GPM. It is enough capacity to serve the need for a full house.

Power source

The source on which this water heater run is propane. It does not need electricity to let it function. So, your electricity bill is not going to be increased.

Certification

It has the certification for the UL list that declares it safe to use every time. But, we recommend you not to use this product in a freezing environment.

Display

This product features a digital display for temperature updates. Note that this display is easy to read that makes it a useful model.

Installation

It comes with all the necessary components to aid the installation. Install it indoors and call an expert to ensure perfect mounting.

Style

Note that you have to set the temperature and pressure manually. A knob is here to provide this function more efficiently.

Pros

  • Minimum noise during working
  • The display is easy to read
  • Pace saving design
  • Strong power ventilation
  • Installation is easy

Cons

  • Not for outdoor
  • Not for freezing weather

6. EcoSmart ECO 11 Electric Tankless Water Heater

Best electric tankless water heater for rv

EcoSmart ECO 11 Electric Tankless Water Heater
EcoSmart ECO 11 Electric Tankless Water Heater
Item Weight :‎6.5 pounds
Product Dimensions :‎3.75 x 8 x 11.5 inches
Voltage :‎220 Volts
Wattage :‎13000 watts
Batteries Required? :‎No

EcoSmart ECO 11 uses the power of electricity to do its job. Plus, it owns self-modulation technology to give you a next-level service. This model is not very heavy and has a good name in the market.

This model comes with a flow rate of 2 GPM. If you own a small family, then this would be an excellent selection for you.

Climate

With the surrounding temperature of 67 Fahrenheit or more, you can use this water heater. We recommend you not to get this water heater if your surroundings’ groundwater is below 67 Fahrenheit.

Temperature

It features a very amazing temperature control system with the help of a digital screen. You can manage the temperature with a 1-degree increase or decrease.

Power source

Electricity provides the essential power to complete its work. So, if your location has a low amount of natural gas, then electricity is here to run it.

Profile

This unit has a white exterior that looks very attractive. It might be a great addition to your home. Moreover, its compact style lets you place it anywhere you want.

Cost

This water heater is very active to reduce the electricity cost. Use this model, and it will save 60 percent of electricity cost due to the amazing construction.

Pros

  • Compact size
  • Installation is easy
  • Not very pricey
  • Temperature is manageable
  • Well-made design

Cons

  • For small homes
  • Not for cold areas

7. GASLAND BE158 Tankless Water Heater

Best outdoor tankless water heater for rv

GASLAND BE158 Tankless Water Heater
GASLAND BE158 Tankless Water Heater
Item Weight :‎15.44 pounds
Product Dimensions :‎11.8 x 6.1 x 17.3 inches
Power Source :‎Battery Powered
Voltage :‎3 Volts
Wattage :‎12000 watts
Water Consumption :‎1.58 Gallons per Minute

Gasland is a famous brand that is very safe to use. It saves energy while providing warm water without wait. This model is not too pricey and yet provides nicer services.

Certification

GASLAND BE158 has CSA approval. This certification says that this model is safe to use every time. This certification is granted due to the overheat protection and anti-freeze protection. Plus, it features a tool that manages flame failure.

Design

This model has a compact design that allows it to fit even in smaller spaces. It has very lightweight that makes it portable. You can carry it anywhere for outdoor usage.

Installation

Its installation is very simple and easy. You can consult the manual and install it without a professional.

Fast

With the output power of 41,000 BTUs per hour, you will instantly get hot water and make it a useful and quick unit. The excellent point is that you do not need to wait for pre-heating.

Flow rate

The flow rate of GASLAND BE158 is 1.58 GPM. This is the level that is enough to fulfill the demand of a small house or an outdoor trip.

Flexibility

A very good point to note is that water flow and heat and can be adjusted at any time. Plus, the technology introduced in this heater is very efficient to reduce the usage of gas. Plus, you would not have to face burning noise.

Pros

  • Easy to install
  • Light in weight
  • Portable design
  • Low gas consumption
  • Less pricey

Cons

  • Low flow rate
  • Low-temperature rise

8. Bosch Tronic 3000 T Electric Mini-Tank Water Heater

Best mini tankless water heater for rv

Bosch Tronic 3000 T Electric Mini-Tank Water Heater
Bosch Tronic 3000 T Electric Mini-Tank Water Heater
Item Weight :‎29.5 pounds
Product Dimensions :‎10 x 10 x 16 inches
Power Source :‎Corded Electric
Voltage :‎120 Volts
Wattage :‎1440 watts

This unit is safe to use due to the integrated temperature and pressure relief valves. Its color is white to provide an attractive look. Place it anywhere you want and it would not look odd.

Efficiency

This unit has a very amazing thermal efficiency of 98 percent. It has a capacity of 7 gallons that can fit anywhere in your kitchen.

Installation

This water heater can be mounted in any direction from a vertical to a horizontal direction. Note that vertical installation can manage more water than horizontal type.

It can be installed anywhere on the floor, wall, shelf, or more.

Temperature

You can manage temperature anywhere between 65 F and 145 F. Plus, temperature and pressure relief valves are present that are specialized to maximize safety.

Capacity

It has a nicer capacity of 7 gallons to ensure you unlimited warm water every time. So, it can entertain your full home.

Durable

This model comes with a thick layer of insulation that is free from CFC. The main aim of this construction is to provide durability.

Fast

This water heater delivers fast working. You have no need to wait for several minutes to get warm water.

Pros

  • Safe to use
  • Easy to maintain
  • Simple design
  • Long-lasting
  • Can be mount anywhere

Cons

  • Low capacity
  • May have thermostat tripping

9. Rinnai V65iP Tankless Hot Water Heater

Best hot water tankless water heater for rv

Rinnai V65iP Propane Tankless Hot Water Heater
Rinnai V65iP Propane Tankless Hot Water Heater
Item Weight :‎45.6 pounds
Product Dimensions :‎14.04 x 9.27 x 26.9 inches
Size :‎6.5 GPM
Power Source :‎Gas Powered
Voltage :‎120 Volts
Water Consumption :‎6.5 Gallons

Rinnai V65iP is good to use with an amazing warranty and outer look. SCAQMD has approved it as a safe heater so, you should neglect all the uncertainties while using this product.

Flow rate

The maximum flow rate offered by this model of Rinnai is 6.3 GPM. This amount is enough to supply its services to the medium-sized home.

Power source

This model runs on the power of propane. If your living area has short of electricity or natural gas, then you can get this heater for endless services.

Fixtures

Rinnai V65iP water heater comes with 5 fixtures to fulfill the need for a full home. Now, you can continue multiple tasks at the same time.

Installation

Though the installation process is not complicated, it is worthy of calling an expert. The manufacturer has designed it for indoor usage only.

Wi-Fi

This unit comes with a Wi-Fi connection, so this feature acts as a vital feature that other brands do not offer.

Mobile application

You can use its mobile application that is supportive to set the timer for the hot water parallel to your routine. Moreover, the vacation mode is available when you don’t need it.

Pros

  • Very efficient
  • Very low nitrogen oxide
  • Warranty is good
  • Wi-Fi is enable
  • Good flow rate

Cons

  • For indoor use only
  • Installation is not simple

10. Rinnai RUC98iN Ultra Series Tankless Water Heater

Best Pick

Best 120V tankless water heater for rv

Rinnai RUC98iN Ultra Series Tankless Water Heater
Rinnai RUC98iN Ultra Series Tankless Water Heater
Item Weight :‎82 pounds
Product Dimensions :‎10 x 18.5 x 26 inches
Power Source :‎Gas Powered
Voltage :‎120 Volts
Flow Rate :‎9.8 Gallons Per Minute
Water Consumption :‎9.8 Gallons
Certification :‎Energy Star

Rinnai RUC98iN comes with a good flow rate with an energy factor of 0.96. Its maximum out power is 199,000 BTUs to make it a stronger product.

Flow rate

The flow rate offered by this model of Rinnai is 9.8 GPM. This capacity is amazing to fulfill the need for a big home. Use this water heater, and it would be giving you a strong water flow in return.

Installation

This heater’s installation process is not that difficult, but it would be worthy of hiring an expert. According to manufacturers, this unit is designed for indoor installation.

Power source

Natural gas acts as the key source to offer the necessary power. So, if you cannot afford electricity or your area has zero supply of electricity, then this model is an amazing choice for you.

Profile

The design of this water heater is very good to save space. You can put it anywhere, and it would not cover more space.

Safe

This model produces a very low amount of nitrogen oxide to maintain the quality of the atmosphere.

Temperature

You can use it for residential or commercial purposes. For household use, it offers a temperature range of 98 f to 140 F. Plus, 98 F to 185 F is available for commercial temperature.

Pros

  • Environment-friendly
  • Venting option is available
  • Space-saving design
  • Good quality
  • Simple to use

Cons

  • No recirculation technology
  • Very high price

Buying guide

This part is specific to provide you with an excellent guide on the necessary features to consider for the best tankless water heaters for RV in 2022 termination of flow rate, energy efficiency, power source, BTU capacity, and size is necessary.

Flow rate

Each heater comes with a unique flow rate. What flow rate you need depends on your family size and the water peak that you use daily. With a small family of 1 to 3 people, you can go for a maximum water flow of 3 GPM. On the other hand, if your family is big and demands multiple fixtures, we recommend getting a flow rate of 10 GPM. This capacity would meet your demand with great ease.

Power source

It is a fact that in this age of the 21st century, not every place has the facility of electricity. The same is the case with natural gas. The tankless water heater comes with three types of power sources. These are electricity, propane, and natural gas. Before going for the final purchase, always consider what kind of fuel is available in your surroundings. It would save you from fuel problems in the future.

Location

Do consider what would be the location of your RV. It may be a place with zero water availability. In this case, there would be no use of a water heater. On the other hand, with your own water storage, you can get its benefits.

Secondly, you can have a water source in your surroundings. The temperature of this water may touch the freezing point. That’s why we suggest you get the type with a good temperature management range.

BTUs capacity

The BTUs capacity may affect very greatly. If your house is in a climate with a very low temperature, it is possible that water may not get hot perfectly. Here comes the function of British Thermal Units. Try to get a heater with good BTU capacity. It would support you when input water has a freezing temperature.

Budget

Budget is one of the key factors that should not be neglected. It is the first step to consider while going for a purchase. The market is full of water heaters with low to high prices. You may have a good quality product at a cheap price, but you have to compromise over the number of features. On the other hand, the pricey water heater brings quality and quantity with it.

Fix the budget first, enlist the most demanding features according to your location, and then go for the best product offered by the most famous brand.

Frequently Asked Questions

What are the best brands that are offering water heater for RV?

According to our research, Rinnai, Camplux, Marey, EcoSmart, Gasland, and Bosch are offering the best tankless water heater for RV.

Does a tankless water heater demand maintenance?

Basically, these types of water heaters do not demand strong maintenance. But, if you treat them nicely, they would serve you for a long.

Conclusion

To conclude, we want to say that we pick the best models after long research that are best in all ways and have the minimum drawbacks. All the products mentioned above are best to serve you and are highly versatile. Furthermore, you can use it in your RVs as well as in homes.

We hope our detailed review and buying guide help you in choosing the best tankless water heater for RV in 2022 that is effective and environment-friendly.

Our Recommendation

In this section, we are recommending you the top two products of our choice. If your budget allows, you should get Rinnai RUC98iN Ultra Series Tankless Water Heater. This heater is safe for the environment and has a good flow rate. A budget-friendly heater to recommend is Camplux 5L Propane Tankless Water Heater. It has a compact design and is ideal for outdoor usage.


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