how to install rv water heater

3 min read 05-02-2025

Meta Description: Learn how to install an RV water heater with our comprehensive guide. We cover everything from choosing the right heater to connecting gas and electricity, ensuring safe and efficient hot water in your RV. This detailed walkthrough includes troubleshooting tips and safety precautions for a successful installation. Get ready for hot showers on the road!

Choosing Your RV Water Heater

Before diving into the installation, you need to choose the right RV water heater for your needs. Consider these factors:

Size: Capacity is measured in gallons. Larger tanks provide more hot water but take up more space and weigh more.
Fuel Type: Most RV water heaters run on propane gas, electricity, or both (dual fuel). Consider your campsite access to electricity and your preference for fuel efficiency.
Features: Some models offer features like electronic ignition, low-water shutoff, and anode rods for corrosion prevention.

Tools and Materials You'll Need

Before you begin, gather all necessary tools and materials. This will make the installation process smoother and more efficient. You'll need:

New RV Water Heater: Ensure it's the correct size and fuel type for your RV.
Plumbing Supplies: This includes fittings, flexible connectors, Teflon tape, and possibly new water lines.
Gas Line Connector: If using propane, you'll need a connector compatible with your RV's gas system.
Electrical Wiring: If using an electric water heater, you'll need appropriate wiring and connectors.
Level: To ensure the water heater is properly installed.
Wrench Set: For tightening fittings and connections.
Screwdrivers: Phillips and flathead.
Pliers: For various tasks, like gripping pipes.
Safety Glasses and Gloves: Always prioritize safety.

Step-by-Step RV Water Heater Installation

This guide assumes you're replacing an existing water heater. If installing a new one, you'll need to adapt the instructions to your specific RV layout.

1. Disconnect the Old Water Heater

Turn off the water supply: Locate the shut-off valves for the hot and cold water lines. Turn them off completely.
Drain the old water heater: Open a hot water faucet to relieve pressure. Then, carefully drain the water heater through its drain valve.
Disconnect the water lines: Carefully disconnect the hot and cold water lines from the old heater. Have a bucket or pan handy to catch any remaining water.
Disconnect the gas line (if applicable): Turn off the propane tank valve. Carefully disconnect the gas line from the old water heater. Use soap and water to check for gas leaks after disconnecting.
Disconnect the electrical wiring (if applicable): Turn off the power supply to the water heater at the breaker box. Disconnect the electrical wires from the old heater.

2. Preparing for the New Water Heater

Clean the area: Thoroughly clean the area where the new water heater will be installed. Remove any debris or old sealant.
Mount the new water heater: Securely mount the new water heater according to the manufacturer's instructions. Ensure it's level.

3. Connecting the Water Lines

Connect the cold water inlet: Attach the cold water inlet line to the new water heater using appropriate fittings and Teflon tape. Tighten securely.
Connect the hot water outlet: Attach the hot water outlet line to the new water heater. Again, use fittings and Teflon tape, tightening securely.

4. Connecting the Gas Line (If Applicable)

Connect the gas line: Connect the gas line to the new water heater, ensuring a tight seal. Use appropriate fittings and Teflon tape.
Check for leaks: After connecting, apply soapy water to all connections to check for gas leaks. No bubbles should appear. If you find a leak, immediately tighten the connection or replace any damaged parts. Never use an open flame to check for leaks.

5. Connecting the Electrical Wiring (If Applicable)

Connect the electrical wires: Connect the electrical wires to the new water heater according to the manufacturer's instructions. Ensure all connections are secure and properly grounded.
Turn on the power: Turn the power back on at the breaker box.

6. Testing and Troubleshooting

Turn on the water supply: Turn the water supply back on slowly. Check for any leaks at all connections.
Light the pilot light (if applicable): Follow the manufacturer's instructions for lighting the pilot light.
Heat the water: Turn on the water heater and allow it to heat the water.
Check for leaks: After heating, check for leaks again.

Safety Precautions

Always turn off the gas and water supply before working on the water heater.
Never work on a gas appliance without proper ventilation.
Use caution when working with electricity.
Consult a qualified professional if you are unsure about any part of the installation process.

This comprehensive guide should help you successfully install your RV water heater. Remember to consult your specific water heater's manual for detailed instructions and safety information. If you have any doubts, consult a professional RV technician. Enjoy hot showers on your next adventure!