Best Tankless Water Heater for RV

Whether you’re planning to live out of your RV for a little while or simply want to improve your RV experience, a tankless water heater is necessary. These water heaters don’t require a lot of space, but they are an investment that every RV owner should make. After all, they’ll control your access to hot water for showers and cleaning. Many experts consider the Camplux 5L Portable Propane Tankless Water Heater to be the best tankless water heater for RV, but you should also look at the rest of our list to find one that works for you. [Interesting Read: Best short queen Rv Mattress]


Camplux 5L Portable Propane Tankless Water Heater

The best tankless water heater for RV has to be the Camplux 5L Portable Propane Tankless Water Heater. This product is incredibly portable since it is a small unit; it’s easy to take between RVs and even easier to hook up. This operates without any electricity except for two batteries to turn the ignition. You can get 1.32 GPM out of this water heater with a maximum temperature of 114.8℉(46℃), and the minimum temperature rise is 46.4℉.

The product only requires 3 PSI before it works. Attach this to a water pump and gas supply, and you’re set to go. Fortunately, it also comes with safety features like an Oxygen Depletion Sensor, which helps if you want to install it indoors. Coming out of the water heater is a gas regulator and a showerhead; all you need is the water. This is perfect for in an RV or off the grid. [Interesting read: best rv shower heads]

Excel Tankless On-Demand Gas Water Heater

The latest Excel product almost took top honors for the best tankless water heater. It comes with vent-free technology and hot water output of 1.6 GPM. Also, the water pressure required for the startup is 2 PSI, which is even lower than the Camplux model.

The user gets control over both the end temperature and the water flow by using the knobs, and you can adjust it based on the incoming water temperature. Unlike some other models, the Excel is very compact, and it does not look like a piece of hardware. Anyone that needs a tankless heater and lacks space could benefit from this one! [Interesting read: best rv water hose]

Atwood GC6AA-10E RV Water Heater

The Atwood is more or less what you would expect from typical, non-compact tankless water heaters. It has a 6-gallon capacity for water and output of 8,800 BTU, so it will get your water heated and ready for showers and whatever else you need.

The Atwood brand is all about durability, which is why the company included an aluminum rod that acts as an anode rod and protects your product from rust and wearing down over time. You can count on using this water heater for a while. Another excellent feature is the low noise generation while it is being used. Taking an early morning shower won’t wake up everyone in the RV. Overall, this product is made from tough, durable materials and easy access for repairs.

Girard 2GWHAM On-Demand Tankless Water Heater

The Girard 2GWHAM model is another quiet tankless water heater that everyone in your RV will appreciate. It works with 42,000 BTU, and that gives it unbelievable power at heating water quickly. For that reason, it’s crucial to set this one up properly. [Interesting read: best rv shower heads]

This product works smarter, maintaining the set hot temperature that you input and not blindly heating water. Users love that no special hoses or nozzles are needed for the input and output on water or gas. This product is wired directly into your RV for display purposes, so it’s not as compact as others. However, it is a great, long-term solution.

Eccotemp FVI12-LP LPG Tankless Water Heater

The Eccotemp tankless water heater is another very compact model that works well in any RV. This product uses LPG to heat water; it’s rated at 3.6 GPM. It’s straightforward to install, lightweight and uses a power cord to activate the digital display.

It’s also designed as an energy-saving model since it only activates when it is put into use. This is best used to heat a small to medium amount of water rather than a large amount, so keep that in mind if you do choose this one.

Bosch Mini Electric Tankless Water Heater

If you’re looking for a simple model, the Bosch Mini Tankless Water Heater might be right for you. It comes with a very long power cord for a 120v outlet, and it is small enough to fit under a lot of sinks, right near a cold-water supply. It has a 2.5 GPM supply, is rated for 98% thermal efficiency, and provides hot water on-demand.

Many people use this mini heater to supplement their current water heater, picking up the slack when another heater is sending out water that’s not at the correct temperature. It can be used independently, though. Mount this under your sink or on the wall- it will fit just about anywhere. [Interesting read: best rv washer dryer combo]


Getting hot water is the first priority for many RV owners. There are many choices on the market for which tankless water heater they should buy, but this list has narrowed down the choices. Here, you’ll find the best tankless water heater for RV owners, and there is something for everyone. Whether you want something bulky and long-lasting or incredibly compact, there is bound to be a product that suits your needs and desires listed above.