Last Updated on October 8, 2024

Keeping your RV water heater in tip-top shape is crucial for ensuring efficient operation and clean water flow. Whether you own a travel trailer, fifth wheel, camper van, or motorhome, the process of sanitizing and descaling your water heater is essential for maintaining its longevity. Over time, dissolved solids can build up in the heater, affecting its efficiency and potentially causing blockages. We found a great video from the YouTube channel that walks through this entire process, and we've highlighted the key steps below. Make sure to watch the entire video at the bottom of the article for a comprehensive guide.

1. Preparation and Safety

Before diving into the cleaning process, it's crucial to ensure that the water inside the heater has cooled down. Turn off all power sources to the water heater, whether gas, electric, or both. Open a few hot water faucets to cycle out the hot water.

You don't want to turn this into an accidental hot spring experience—unless you're into that sort of thing!

2. Draining the Water Heater

After ensuring the water has cooled, relieve the pressure in the tank by opening the temperature and pressure valve. Once it stops venting, close the valve and remove the drain plug. Open the valve again to let the water drain out more quickly.

Think of it as giving your water heater a well-deserved spa day. Everyone needs a little pampering, even appliances!

3. Rinsing the Tank

Use a cleaning wand attached to a hose to rinse out the tank. This will help dislodge and push out any calcium deposits. Close the low point drains and put your water heater in bypass mode to isolate it from the rest of the plumbing system.

It's like using a tiny fire hose to clean out your water heater’s insides. Who knew plumbing could be so action-packed?

4. Introducing the Cleaning Solution

Fill the tank with a solution of distilled white vinegar and water. Depending on your water heater's capacity, you might need six gallons of vinegar. Use a funnel and a homemade pipe adapter to introduce the solution into the tank.

If only making salad dressing was this complicated! But hey, at least your water heater won't have any bad breath after this vinegar bath.

5. Letting the Solution Sit

Allow the vinegar solution to sit in the tank overnight. You can choose to heat the solution by turning on the water heater to speed up the process, but make sure to cap the pipe to prevent leaks.

Letting it sit overnight is like letting your water heater have a sleepover with vinegar. Just hope it doesn't get too rowdy!

6. Final Rinse and Inspection

Drain the tank the next day and rinse it out one more time with the cleaning wand. Inspect the tank using a borescope to ensure that all debris has been removed. Turn the bypass valves back to normal operating mode, reinsert the plug or anode rod, and fill the water heater by turning the water supply back on.

It’s like sending your water heater to the dentist for a thorough cleaning. Say "ahhh" and let’s get rid of those calcium cavities!

Maintaining your RV water heater by regularly sanitizing and descaling it can significantly enhance its efficiency and lifespan. This straightforward process, when done annually, ensures that you have clean and efficient hot water whenever you need it. For a detailed step-by-step visual guide, watch the entire video linked below. Happy RVing!