The 6 Best 12 volt Rv Water Tank Heaters (2023 reviews)

The suburban mfg old heater is long-lasting, rigid and fits well with your regular usage like a dream. This unit will heat water using its 12 volt/propane system or its 110 volt system. The water is super hot. It is made for an easy installation. The tank is porcelain on steel. The anode is also the heater drain plug, so the water supply valve(s) need to be closed and the heater power turns off.

This particular heater will work on 110, or if you do not have access to shore power, it will ignite propane using the 12v connection. The water heater is very easy to install plus all electial connections are simple and easy.

Why We Like This:

Excellent product and actually easy to install
Direct replacement, works great, like the electric option as well
Easy install, worked perfect right out of the box

Best With Camper regulator: Girard Prod 12 volt Rv Water Tank Heater

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The girard prod 12 volt rv water tank heater is suitable and reliable and fits well with your daily purpose. The ability to have unlimited hot water for those long soothing showers is a true luxury. It provides the optimum performance for an rv's plumbing. It comes with a digital user control panel, you can adjust the temperature setting from 95 to 124°f, toggle between fahrenheit and celsius, get a continuous water outlet temperature reading and more. It provides is sufficient, and the control panel 18g wire needs to be longer.

The girard tankless hot water heater comes with a user display that allows you to see the operating functions of the unit and adjust temperatures from 95 to 124°f, toggle between fahrenheit and celsius, get a continuous water outlet temperature reading and more. The controller just turns the system on and sets the temperature. It allows adjustment to increase retention time across the heater for maximum heating.

Why We Like This:

Plenty of hot water on tap
Must adjust to new operating techniques for a tankless water heater
Good investment for long term

Best For fifth wheel: Fogatti Rv Water Heater

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Fogatti makes beautiful and great heater with classic and smartly choosen materials. The FOGATTI RV tankless water heater has a protective device, after using the water heater continuously for more than 20 minutes, it will stop supplying hot water. It provides rapidly heated water and in high volume at temperatures considerably higher than advertised. It comes with a 15 x 15 door and an intelligent remote controller up to 2 meters long. It heats the water up to 123 degrees and is adjustable. It is csa certified and has multiple protection features such as a built-in forced exhaust fan on top, stable combustion, automatic gas shut-off for accidental flame failure and anti-freeze.

This is designed to operate off of the low pressure 2nd stage regulator on an RV, with an 11" water column or about 1/2 psi. The control panel allows you to set the heat to whatever temperature you like. It can be used in even in the freezing temps once on a trip.

Why We Like This:

Works perfect once up and running
More 5 minute showers and running out of hot water
Hot water on demand replacement for camper
Consistent hot water can even add cold to get that perfect temp

Best For motorhome: Fogatti 12 volt Rv Water Tank Heater

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Next on the list, we've got yet another heater that manages to win our hearts. It's the fogatti 12 volt rv water tank heater and it's widely considered as heater that has the most suitable features. It MUST be vented outside, but can’t be in a close enclosed space. It comes with a 15 x 15 door and an intelligent remote controller up to 2 meters long. It has wide retrofit compatibility for suburban sw6d(6 gal ), sw6de(6 gal ), sw4d and sw4de series, girard 2gwham, furrion fwh09a-. It has a European pipe thread. It shows the operating status and allows you to change water temperature.

It has a digital thermostat that goes inside the trailer that will notify when it is on and will show the current temp of the water. The automatic antifreeze mode works as it should so no problems at all.

Why We Like This:

Great and comes with everything needed
Takes a few seconds to start having warm water, and gets hot pretty quick
Good brand reputation

Best For Camper Hot Water Heater: Suburban MFG 12 volt Rv Water Tank Heater

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The suburban mfg 12 volt rv water tank heater is suitable and reliable and fits well with your daily usage. This water heater has been tested 2x to ensure its integrity during the manufacturing process. It uses a porcelain-lined, steel water heater tank with an anode rod to "absorb" the electrolytical action. It has a 12v DC ignition gas heating system.

Why We Like This:

Wired right up to existing wiring and piping
120 v ac heating element with 12v relay for interior operation
Good investment for long term

Best With drain: Camplux 12 volt Rv Water Tank Heater

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The features department is where camplux 12 volt rv water tank heater truly manages to shine. It provides much more hot water than a little 6-gallon traditional water heater will. It is designed with an oxygen-free copper material heat exchanger, which has high thermal efficiency and a lifetime. It also has a pressure relief valve accessible from the front. It fits with the hottest on demand water.

It fits the desired 16.1 x 16.1 inch size additionally, there is no need for bypass plumbing, no tank to drain and no anode rods to change. The water is very hot so you can set it to the temperature you desire. It has only 1.2gpm water flow, so it can work. The remote works well and keeps you from having to go outside to adjust the unit. It is good replacement for suburban & atwood's 4/6 gallons tank water heaters.

Why We Like This: