When it comes to your RV, the hot water heater is the unsung hero of comfort. Whether you have a tanked or tankless model, these handy appliances make life on the road infinitely better. But how much do you really know about your RV hot water heater? Here are the top 10 facts you need to know—with a mix of humor, practical advice, and tips for keeping it in tip-top shape!

1. Two Types: Tanked vs. Tankless

Tanked water heaters store hot water, usually between 6-10 gallons, and are great for small bursts of hot water usage. Tankless models, on the other hand, heat water on demand, giving you endless hot water—as long as your propane or electricity holds out.

Pro Tip: Tankless water heaters often have an "Eco" mode to save propane, but make sure it’s turned off in winter. Some models periodically heat their tubing to prevent freezing.

2. Regular Maintenance Is a Must

Both types of water heaters require maintenance. Tanked models need flushing to remove sediment buildup, while tankless ones require descaling to keep water flow smooth. Skipping maintenance can lead to inefficiency and costly repairs.

3. The Anode Rod Is Your Tanked Heater’s Best Friend

For tanked water heaters, the anode rod sacrifices itself to prevent corrosion inside the tank. If it’s worn out, the tank becomes susceptible to rust and damage. Check it annually and replace it as needed.

4. Tankless Water Heaters Love Clean Filters

If you have a tankless model, keep an eye on its intake water filter. A clogged filter can reduce efficiency and strain the system. Clean it regularly for smooth operation.

5. Sediment Is the Enemy

Over time, sediment builds up inside tanked water heaters, reducing efficiency and heating capacity. Flushing your water heater annually clears out debris and keeps it running smoothly.

Bonus Tip: Mobile RV services (like ours!) can handle this for you.

6. Propane or Electric? You Decide

Most RV water heaters run on propane, electricity, or both. Using both simultaneously heats water faster, while propane is great for off-grid adventures. Know your power options to maximize efficiency.

7. Don’t Forget the Bypass Valve

If you winterize your RV, make sure the hot water heater bypass valve is properly set before adding antifreeze to the system. This prevents antifreeze from entering the heater and causing unnecessary issues.

8. Tankless Models Need Winter Attention

Tankless water heaters often have built-in freeze protection, but only if the power is on. If you’re camping in freezing temps, ensure the heater has power and propane to prevent damage to the brass tubing.

9. Avoid Scalding with a Thermostat Check

Hot water heaters typically allow you to set the temperature. Keeping it around 120°F prevents scalding while conserving propane or electricity. Test the water temperature occasionally to avoid surprises.

10. Mobile RV Services Make Life Easier

Maintaining your hot water heater doesn’t have to be a DIY chore. Our mobile RV service offers affordable annual maintenance plans that include flushing, anode rod checks, descaling, and more. We come to your campsite or driveway, so you can relax while we do the hard work.

Ready to Keep the Hot Water Flowing?

Whether you’re a fan of long, steamy showers or just want to avoid freezing hands while washing dishes, your RV hot water heater deserves a little love. With regular maintenance and expert care, it’ll keep you comfortable for years to come.

Contact us today to schedule your hot water heater maintenance or learn more about our annual plans. Trust us, your hot water heater (and your future self) will thank you!

RV Hot Water Heaters: 10 Things Every RV’er Needs to Know