RV Tankless Water Heater 12 V On Demand Hot Water Heater

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  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
  • RV Tankless Water Heater
Backflow / Pressure Relief Valve
Install Kit


Ladies and gentlemen, we are excited to announce a product that will put all other RV appliances to shame. Convenient, sturdy, and durable are just a few words used to describe it. This fine piece of machinery will make your life twenty times easier if correctly installed. Presenting: the tankless water heater.

Yes, you heard that correctly: tankless. No more waiting for the water tank to warm up or running out of warm water halfway through your shower. With this amazing machine, you can have a steady stream of hot water flowing to your faucets or shower without waiting for the tank to warm up. Simple and convenient to operate, it's all controlled through a microcomputer that you hold in your hands, making controlling your hot water super easy. Just set the temperature and press go! Just make sure to keep that manual for any fault codes that might pop up (we'll go into that later). Once the water starts flowing through the heater, the RV heater starts up, igniting the gas to heat your water to the perfect temperature. (Have I said you can set your preferred temperature yet? Because you can.) The computer system makes sure the entire process is safe and reliable, with multiple measures in place to keep you, your water system, and your RV safe.

Control Device

The microcomputer in the control device controls the water, electricity, and gas of the water. It keeps the temperature of the water to the best level to increase consumer comfort. It displays the current temperature as well as the temperature you set it to, with options for both Celsius and Fahrenheit. There are visuals for the fault code, flame, shower, blower, and power indicator as well. There are buttons for the power switch, Celsius to Fahrenheit switch, increase heat, and decrease heat. With this controller, keeping your water at the most comfortable lace has never been easier. Make sure you put the control pad in an easy to access place so that you won't have to go looking for it.

Safety Measures and Extra Features

There are several features built into this amazing machine.

  • First, there is a forced exhaust structure that keeps the air safe and clean while and after entering the combustion chamber. There is also a dust net to make sure no dirt gets into the tankless water heater.
  • Second, there is a low water pressure startup, which helps to protect the heater and make it easier to use.
  • Third, there is flameout protection. What this means is that if the water heater flames out on accident while being used, it automatically turns off, making sure safety is protected and no gas leaks out.
  • Fourth, there is a speed changing and wind resistance function, which increases the speed of the fan to eliminate any harmful gasses if there is a blockage in the flue of if the smoke is blocked. If the fan increases a maximum speed, the computer will shut off the gas and the flame to make sure safety is kept.
  • Fifth, there is water and gas linkage control. If there is no water flowing or the water outlet valve is closed, the water heater will automatically stop to prevent damage.
  • Sixth, the RV water heater has a frost protection function. Basically, if the water in the pipe gets at or below 43°F, the display will show a code and the heater will start up to run with a certain load to warm it up. The heater will turn off once the water reaches 90°F but it's best to wait about 3 minutes before testing it. Please note, this function will only work when hooked up to both propane and 12V power. 
  • Finally, there is a fault auto-diagnosis and fault code display function. With this function, the computer monitors different components and safety devices to make sure everything is working properly. If something is off, a code will flash on the screen to let you know what it is. The code will be a letter and a number and to know what's wrong, look to the manual for the code key. With this handy safety function, the heater is easy to keep in check and maintain.


With all appliances, there are safety measures to consider. First, it is always best to consult a professional when installing a water heater. This helps to minimize risks as well as making sure it's installed properly. Also, make sure you have a pressure relief valve installed before the water inlet to prevent damage caused by excess pressure. Do not store or use gasoline or other flammable materials near the water heater and make sure it's drained of all water for the winter.

With an RV water heater like this, the days of waiting to take a shower until at least 20 minutes after your guest has will be a thing of the past. Easy to use, durable, and simply amazing, this tankless gas water heater will make your RV trips even more enjoyable. Have any questions? Contact us online or call our friendly Customer Care team today!

Optional Pressure Relief Valve and Backflow Preventer

RV Backflow Preventer:

  • Material: Brass
  • Drinking water safe
  • Durable
  • Rust-resistant
  • Installed before the water heater
  • Prevents potential backflow from the water heater into the freshwater system

Pressure relief valve:

  • 4" Epoxy-coated probe
  • Material: Brass
  • Inlet connection type: national pipe tapered
  • Outlet connection type: MNPT
  • Outlet connection size: 0.5 inches
  • Protects water heater from excessive water temperatures and pressure
  • Corrosion-resistant
  • Factory pre-set to 150PSI and 210 degrees Fahrenheit
  • CSA certified
  • Weight: 8 ounces
  • Crafted with epoxy-coated probes to prevent corrosion buildup
  • Rated for 15,000 BTU

All fittings for this kit are 1/2"

*Failure to winterize your tankless water heater will void warranty*


  • Tankless water heater
  • Instant heating abilities
  • Temperature range: 95°F - 123°F
  • Dimensions (Front panel): 15" H x 15"W
  • Dimensions (Back section): 12.7" H x 12.7" W x 13.8" D
  • Dimensions (Entire unit): 14.3" D
  • Max temperature: 123 degrees Fahrenheit
  • Applicable water pressure: 14.5-116 PSI
  • Automatic ignition
  • Heat exchanger is made of copper
  • (1) Water outlet and (1) inlet
  • (1) Gas inlet
  • Gas inlet measures 3.8" from the bottom
  • Power port measures 7.42" from the bottom
  • (1) Flat lock
  • Air inlet grilles
  • (1) Decorative ring
  • With wired controller with power, temperature, and Celsius-to-Fahrenheit controls
  • Low water pressure startup
  • Flameout protection
  • Forced exhaust structure
  • Speed changing and wind resistance function
  • Water and gas linkage control
  • Fault auto-diagnosis and fault code display
  • Amount of water coming out of the heater depends on the amount of water put into the water heater
Technical Data:
  • 12V DC
  • 20 Watts
  • Approx 1.6A 
  • BTUs: 42000
  • Single stage

If the temperature of the water flowing into the water heater is less than 43°F or higher than 90°, the water heater will not heat the water. If the water in the pipes is colder than 43°, it is recommended to use tank and tubing heater pads to heat the water before it reaches the water heater.

At higher altitudes, this unit will have two problems: the thermal efficiency will decrease and the power will be lost, and the insufficient combustion will lead to worse combustion conditions, substandard combustion emissions, or abnormal ignition. Above 4,000 ft elevation, this unit will lose 4% of its BTU for every 1,000 ft above this height.

Frequently Asked Questions

Q: The water isn't getting hot. What should I do?
A: It's possible that the water flow is too large, the temperature regulation is not appropriate, or the inlet temperature of the external environment is too low.

Q: What's the minimum amount of water pressure to run the unit?
A: The unit can be started with under 0.1MPa water pressure or 0.66 gal/min water flow.

Q: What's the maximum amount of hot water per minute?
A: It depends on the temperature of the water at the inlet. Warmer water will flow through the system a bit faster than cold water. Please refer to the chart:

Inlet water temperature (°F)
Outlet flowrate
(Gallons per Minute)
42.8°F 1.16 gpm
50 1.32
59 1.58
68 1.98
77 2.64
86 3.96
95 7.92


Q: What is the weight of the water heater?
A: 20.3 pounds

Q: How do you descale the water heater?
A: Use a detergent such as citric acid, and with the water temperature of 50°C, pump circulation for 20 minutes.

Q: Is the heater CSA verified?
A: Yes, it is CSA verified 

Q: How long does it take for the water to heat?
A: About 15 seconds

Q: How do the doors attach to the unit?
A: The door is hinged to the unit

Q: Is the heating unit equipped with an oxygen depletion safety shutoff device?
A: They have flame-out protection devices

Q: What is the country or origin for the products?
A: China