how to replace a rv water heater

3 min read 16-01-2025

Meta Description: Learn how to replace your RV water heater with this comprehensive guide. We cover choosing the right replacement, prepping your RV, the installation process, and testing your new heater. Get your hot water back on track! (158 characters)

Introduction

Replacing your RV water heater might seem daunting, but with the right tools and this step-by-step guide, you can handle it yourself and save money. This article will walk you through the entire process, from choosing the right replacement to testing your new water heater. Having hot water in your RV is essential, so let's get started!

Choosing the Right Replacement RV Water Heater

Before you even begin, selecting the correct replacement water heater is crucial. Consider these factors:

Size: Measure your existing water heater’s dimensions. You need an exact fit to avoid installation headaches. Note the tank capacity (gallons) as well.
Voltage: Is your current heater 120V or 12V? Match the voltage exactly. Mixing them up could damage your RV's electrical system.
Fuel Type: Is it propane, electric, or a combination? Stick with the same fuel type unless you want to undertake more extensive modifications to your RV's plumbing and electrical systems.
Features: Consider features like anode rods (for corrosion protection) and built-in pressure relief valves.

You can find replacement RV water heaters at most RV supply stores or online retailers. Check reviews to see what other RV owners have to say about particular models.

Preparing for the RV Water Heater Replacement

Safety is paramount. Before you start, follow these steps:

Turn off the gas supply: If you have a gas water heater, turn off the gas supply to the unit completely.
Turn off the power: Switch off the breaker or fuse for the water heater’s electrical supply.
Drain the water heater: Connect a garden hose to the drain valve at the bottom of the water heater. Open the valve and let the water drain completely into a suitable container. This is crucial to avoid a mess.
Gather your tools: You will need basic plumbing tools such as wrenches, pliers, screwdrivers, a level, and possibly a pipe wrench. Check your water heater's manual for specific tool recommendations.

Removing the Old RV Water Heater

Once your RV water heater is drained and power is off, you can start the removal process:

Disconnect the gas lines (if applicable): Carefully disconnect the gas lines using appropriate wrenches. Remember to follow safety precautions for working with propane. If unsure, consult a professional.
Disconnect the water lines: Disconnect the cold and hot water supply lines using wrenches. Have a bucket or towels ready to catch any remaining water.
Disconnect the power wires (if applicable): Carefully disconnect the power wires from the water heater's terminal block, labeling them to make reconnection easier.
Detach the water heater: Depending on your RV's setup, you might need to remove screws or unbolt the water heater from its mounting bracket. Use caution and ensure you have adequate support to prevent the water heater from falling.

Installing the New RV Water Heater

Installing the new water heater is largely the reverse of removing the old one.

Mount the new water heater: Securely mount the new water heater in the same location as the old one, ensuring it's level.
Reconnect the water lines: Connect the cold and hot water supply lines, ensuring they are tight and leak-free.
Reconnect the gas lines (if applicable): Reconnect the gas lines, making sure all connections are secure and free of leaks. Use leak detection solution to confirm proper sealing.
Reconnect the power wires (if applicable): Reconnect the power wires to the terminal block, matching them to the labeled wires from the old unit.
Turn on the gas/power: Once everything is reconnected, carefully turn on the gas or power to the water heater.

Testing the New RV Water Heater

After installation, it is crucial to test the new water heater thoroughly:

Check for leaks: Inspect all connections for leaks. Wipe down connections and look for damp spots or drips.
Turn on the water heater: Light the pilot light (for gas models) or switch on the power.
Heat the water: Allow the water heater to heat up to check for proper functioning.
Check the pressure relief valve: Make sure the pressure relief valve is operating correctly. There should be a small amount of pressure relief during heating. If you see excessive pressure relief, there may be an issue.

Conclusion

Replacing your RV water heater is a manageable DIY project if you're comfortable with basic plumbing and electrical work. However, if you are unsure about any step, don't hesitate to consult a professional RV technician. Having a reliable water heater ensures comfortable and enjoyable RV adventures. Remember to always prioritize safety and double-check all connections before turning on the power or gas.