How To Install Tankless Water Heater In Rv

How to Install a Tankless Water Heater in an RV

Are you tired of running out of hot water during your RV trips? It’s time to consider installing a tankless water heater in your RV. Tankless water heaters provide hot water on demand, ensuring you never have to wait for the water to heat up again. In this article, we will guide you through the step-by-step process of installing a tankless water heater in your RV.

Step 1: Choosing the Right Tankless Water Heater

Before you start the installation process, it’s crucial to choose the right tankless water heater for your RV. Consider factors such as the size of your RV, the number of people using hot water, and the energy source available. Tankless water heaters can be powered by propane, natural gas, or electricity. Ensure that the heater you select fits your RV’s specifications and needs.

Step 2: Gathering the Tools and Materials

Once you have chosen the right tankless water heater, gather the necessary tools and materials for the installation process. Some of the essential items you will need include:

  • Adjustable wrench
  • Pipe cutter
  • Pipe thread sealant
  • Teflon tape
  • Drill
  • Screwdrivers
  • Gloves and safety goggles
  • Mounting hardware
  • Water lines and fittings
  • Electrical wiring

Gathering these tools and materials before starting the installation process will save you time and make the process smoother.

Step 3: Preparing the RV

Before installing the tankless water heater, it’s important to prepare your RV. Start by turning off the water supply and draining the existing water heater. Disconnect any electrical or gas connections from the old water heater and remove it from its location. Clean the area and ensure there is enough space to install the new tankless water heater.

Step 4: Mounting the Tankless Water Heater

Begin the installation by mounting the tankless water heater in the designated location. Follow the manufacturer’s instructions for mounting and use the provided mounting hardware. Ensure that the heater is level and securely attached to the RV to prevent any accidents during travel.

Step 5: Connecting the Water Lines and Fittings

Connect the hot and cold water lines to the tankless water heater. Use a pipe cutter to cut the necessary lengths of copper or PVC pipes. Insert the pipes into the unit’s water inlet and outlet, making sure to use appropriate fittings and connectors. Apply pipe thread sealant or Teflon tape to prevent any leaks. Also, install a pressure relief valve to safeguard the unit from excessive pressure.

Step 6: Connecting the Gas or Electrical Supply

If your tankless water heater runs on gas, connect the gas supply according to the manufacturer’s instructions. Ensure that all gas connections are secure and leak-proof. In the case of an electric tankless water heater, connect the electrical wiring, following standard electrical safety procedures. If you’re not confident in handling electrical connections, it’s best to consult a professional electrician.

Step 7: Testing the Installation

Once the tankless water heater is fully installed, it’s time to test the system. Turn on the water supply and check for any leaks or drips from the connections. Once you have confirmed there are no leaks, turn on the heater and wait for the water to heat up. Test the hot water at different faucets and ensure it reaches the desired temperature.

Frequently Asked Questions On How To Install Tankless Water Heater In Rv

How Do You Install A Tankless Water Heater In An Rv?

To install a tankless water heater in an RV, first, turn off the water supply. Then, disconnect the existing water heater and remove it from the RV. Install the tankless water heater in its place, connecting the pipes and fittings securely.

Make sure to follow the manufacturer’s instructions and consult a professional if needed.

What Are The Benefits Of Installing A Tankless Water Heater In An Rv?

Installing a tankless water heater in an RV brings several benefits, such as energy efficiency, endless hot water supply, compact size, and longer lifespan. It saves space, reduces energy consumption, and provides a continuous flow of hot water, perfect for on-the-go adventures.

Can I Install The Tankless Water Heater Myself Or Do I Need Professional Help?

While installing a tankless water heater in an RV can be a DIY project for those with plumbing experience, it’s advisable to seek professional help. An expert can ensure proper installation, avoid any plumbing mistakes, and provide guidance on the best options for your RV’s specific needs.

What Are The Key Factors To Consider Before Choosing A Tankless Water Heater For An Rv?

Before choosing a tankless water heater for your RV, consider factors such as the size and requirements of your RV, the water flow rate required, the power source availability, and the overall compatibility of the unit with your RV’s system.

Additionally, explore energy efficiency ratings and customer reviews to make an informed decision.


Installing a tankless water heater in your RV can greatly enhance your camping experience. With hot water on demand, you can enjoy longer showers and a comfortable living environment. By following the step-by-step guide outlined in this article, you can successfully install a tankless water heater and have hot water wherever you go.

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