Tankless and Trouble-Free: Know the Basics and Essential Care Tips of RV Gas Tankless Water Heater

Fogatti Gift Guide for RVers 2023

Basic Guidelines of RV Gas Tankless Water Heaters and It’s Care Tips


An RV Gas Tankless Water Heater is a critical component of any RV, as it provides hot water for showering, cooking, and cleaning. Proper maintenance and care of your RV gas tankless water heater are essential to ensure its longevity and performance. This guide will cover the basics of RV water heaters and provide tips on how to take care of your RV gas tankless water heater, including sanitization, draining, changing the anode rod, cleaning the burner tube, winterizing, and inspecting before each use.


Taking Care Of Your RV Gas Tankless Water Heater:


You Should Sanitize Your RV Gas Tankless Water Heater

It is essential to sanitize your RV Gas Tankless Water Heater to eliminate any bacteria or mold that may have accumulated. To do this, you will need to use a specialized cleaning solution and follow the instructions provided by the manufacturer. It is best to sanitize your RV Gas Tankless Water Heater at least once a year or if you notice an unpleasant odor or taste in the water.

Drain Your RV Water Heater

It’s not necessary to drain your RV water heater after each use. However, you should drain it before storing your RV for an extended period or when winterizing it. Draining the water heater helps to prevent the buildup of sediment, which can cause damage and reduce the unit's efficiency.

Cleaning the Water Heater Burner Tube

The burner tube is responsible for heating the water in your RV Gas Tankless Water Heater. Over time, it can become clogged with dirt, dust, and debris, affecting the unit's efficiency. To clean the burner tube, you will need to turn off the propane and remove the burner assembly. Clean the tube with a wire brush or compressed air, and reassemble the unit.

Winterizing an RV Gas Tankless Water Heater

Winterizing your RV Gas Tankless Water Heater is essential to prevent damage from freezing temperatures. To winterize your  RV Gas Tankless Water Heater, you will need to drain the water heater and add antifreeze to the system. Follow the instructions provided by the manufacturer to ensure proper winterization.

Inspect Before Each Use

Before using your  RV Gas Tankless Water Heater, it is essential to inspect it for any damage or leaks. Check the connections, valves, and hoses for any signs of wear or damage. Ensure that the unit is properly ventilated and that there are no obstructions around the unit. If you notice any issues, have them repaired immediately.

tankless water heater


Basics Of  RV Gas Tankless Water Heater:


Storage Capacity

Tankless RV has no storage capacity of water. Generally, tank RV water heater have the capacity of 6/10 gallons.

Fuel Options

RV Gas Tankless Water Heater can run on either propane or electricity. Propane is the most common fuel source for RV hot water heaters, as it is readily available and efficient.

Operating Mode

RV Gas Tankless Water Heater can operate in two modes: electric or propane. If you are boondocking or dry camping, you will need to use propane to operate the unit.

Liquid Propane (LP) Mode

In LP mode, the propane gas is ignited by a spark igniter or pilot light, and the flame heats the water. A thermostat controls the temperature of the water, and a pressure relief valve ensures the water heater does not overheat.


Frequently Asked Question:

How does a tankless RV gas water heater work?


Tankless RV gas water heaters, also known as RV-instant-hot-water-heaters, work by heating the water as soon as you flip the hot water faucet on. Rather than heating an entire tank of water, an instant RV hot water heater heats the water as it runs through the pipes inside the heater.


What is the downside of a RV gas tankless water heater?


The biggest downside of RV gas tankless water heaters is their higher initial cost. A good quality tankless heater will run you more than a traditional storage-tank model, although the savings in energy costs over time can make up for this difference.


Can I leave my RV gas tankless water heater on all the time?


It's safe to leave your RV gas tankless water heater on all the time, just like at home. You'll want to make sure that there is always water in the heater. And that it's turned off before moving your RV.


How much gas does a RV gas tankless water heater use?


It will consume 0.65 gallons of propane an hour. If you want to look at it per day it would be 15.75 gallons of propane per day if it ran non-stop. Since it runs on demand the hourly rate is up to the user.


How efficient is RV gas tankless water heater?


Although tankless gas water heaters should save approximately 33% on hot water heating compared to a conventional storage water heater, actual energy savings vary significantly based on individual draw volume. Above 10 gallons per draw, the efficiency approaches the rated energy factor.



Fogatti's basics and care tips of RV Gas Tankless Water Heater are essential knowledge for any RV owner who wants to ensure their water heater operates smoothly and efficiently. Proper maintenance and care, including sanitizing the tank, inspecting it regularly, and changing the anode rod, will help extend the lifespan of the water heater and prevent issues from arising. Fogatti also emphasizes the importance of understanding the basics of RV Gas Tankless Water Heater, such as storage capacity, fuel options, and operating modes, to choose the right model for one's needs. By following these tips and best practices, RV owners can ensure they have hot water on demand during their travels and avoid unexpected breakdowns or repair costs.

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