Best RV Tankless Water Heater Reviews


This time around, I am sharing the best RV tankless water heater reviews for people who love traveling and doing outdoor activities. This is a sort of spin-off from an older post, where I shared how I helped my parents get a tankless heater for their new home. Unlike my homebody parents though, I have for myself an RV because I have always been drawn to a nomadic kind of life.

Table of Contents

  1. Best RV Tankless Water Heater
  2. RV Tankless Water Heater Reviews
  3. EZ 202 Review
  4. Eccotemp L10 Review
  5. Rheem RTE 9 Review
  6. EZ 101 Review
  7. Ecosmart POU 3.5 Review
  8. RV Tankless Water Heater vs. the Standard Tank Type

Best RV Tankless Water Heater

The best RV tankless water heater is the one that would work well for your RV and your specific situation. Taking all important considerations into account, here are the top RV tankless heaters that are likely to work for you:

  1. EZ 202
  2. Eccotemp L10
  3. Rheem RTE 9
  4. EZ 101
  5. Ecosmart POU 3.5

RV Tankless Water Heater Reviews

EZ 202 Review

The EZ 202 doesn’t require a plug-in, thus making it perfect for barns, outbuildings and garages. It is a great choice for people who occasionally require on-demand hot water, but not as ideal as other models when it comes to camping or hunting adventures. Nonetheless, it is great for temporary outdoor setups at long term camps, remote cabins and even homes with one bathroom.

The EZ 202 can serve as much as 3.2 gallons of hot water per minute, and it can do so continuously and consistently at a 45 °F rise. And because it has a low ignition requirement, it can work even below 2.9 Psi or 0.02 Mpa of water pressure. Also, the ignition is automatic (using two “D” cells) and thus saves you even more energy. Overall, the EZ 202’s design is very convenient, unobtrusive and safe.

Eccotemp L10 Review

Made for more permanent outdoor setups, the Eccotemp L10 is perfect for RVs, camps, potting sheds, cabins, cottages, lake houses and even horse washing stalls. It can be plumbed in with typical fixtures since it has standard 1/2″ NPT fittings, and so it’s easy to use for a lot of applications. Also, it can handle 2 simultaneous usage and can serve up to 2.65 GPM of water with temperatures of 80 to 165 °F.

The Eccotemp L10 has an ignition system that uses two “D” cell batteries, and it starts only when there is running water. This makes the water heater great for off grid locations and places where electricity is limited. Furthermore, it eliminates the possibility of overheating. It can only run on liquid propane, but it does run great even on a 12 volt pump and other modified water systems.

Rheem RTE 9 Review

The Rheem RTE 9 is an electric tankless water heater that can serve around 2 gallons of water within a minute at temperatures above 390 F.

EZ 101 Review

The EZ 101 doesn’t need an electrical plug-in, and so, it is ideal for outdoor enthusiasts who go on camping and hunting expeditions. It may also be used for temporary setups at long term camps, cabins or small lake houses, sheds and workshops, and well ventilated open areas. Manufacturer EZ Tankless emphasizes that it is a kind of draft unit that is not be installed inside a residence.

The EZ 101 runs on standard propane tanks similar to those used for barbecue grills. And like the other EZ models, the ignition is automatic via two “D” cells, and this helps to save even more energy and money. Also, the design is as convenient, unobtrusive, and safe as the others. It even has a mechanism wherein air from around it is used to keep the water heater cool and safe to touch.

Ecosmart POU 3.5 Review

Like other Point of Use models, the Ecosmart POU 3.5 is ideal for RVs as well as boats, strip malls, wet bars, and even a doctor’s office. However, take note that Point of Use models are designed specifically for use under the sink, and only for a single application. The POU 3.5 is the smallest Ecosmart tankless heater and is not intended to support several or multiple sinks.

That said, the Ecosmart POU 3.5 can provide an endless supply of hot water when its size is right for the expected intensity of use. This tankless unit is flow controlled, which means that the temperature of the water it serves is dependent on flow rate. And at its required inlet water temperature of at least 57°F, the Ecosmart POU 3.5 will heat as much as 0.5 gallons of water to 105°F in a minute.

RV Tankless Water Heater vs. the Standard Tank Type

Aside from the video above, you might want to read this comparison of tank and tankless water heaters.


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