As the leaves change and temperatures begin to drop, it’s time to think about protecting your RV from the harsh realities of winter. One of the most crucial tasks is properly winterizing your RV’s plumbing system. Freezing temperatures can cause pipes to burst, leading to costly and time-consuming repairs. Don’t let winter damage ruin your next RV adventure. Follow these steps to ensure your RV’s plumbing survives the cold.
Step-by-Step Guide to Winterizing Your RV Plumbing
- Drain the Water System: Begin by draining all the water from your RV’s freshwater tank, water heater, and holding tanks. Locate the drain valves and open them until all the water is expelled. Remember to bypass your water heater to prevent filling it with antifreeze.
- Bypass the Water Heater: Engage the water heater bypass valve(s). This prevents antifreeze from entering the water heater tank, saving you antifreeze and preventing residue later.
- Add RV Antifreeze: Using a water pump converter kit or by pouring directly into the freshwater tank, introduce RV antifreeze into the plumbing system. Open each faucet (both hot and cold) one at a time until you see pink antifreeze flowing. Don’t forget the shower, toilet, and any outdoor showers or faucets.
- Flush the Toilet: Pour antifreeze into the toilet bowl and flush until antifreeze is visible.
- Pour Antifreeze into Drains: Pour antifreeze into each drain (sink and shower) to protect the P-traps.
- Empty the Holding Tanks: Thoroughly flush and empty your black and gray water holding tanks. It’s also a good idea to add a small amount of RV antifreeze to these tanks for extra protection.
Important Considerations:
- Use only RV antifreeze, which is non-toxic and safe for potable water systems. Never use automotive antifreeze, as it is highly toxic.
- Consult your RV’s owner’s manual for specific winterizing instructions, as procedures may vary depending on the model.
- Consider having a professional inspect your RV’s plumbing system before winterizing to identify any potential problems.
Winterizing your RV plumbing system is a vital task for RV owners living in colder climates. Taking the time to properly prepare your RV will save you from potential headaches and costly repairs in the spring.
Want to skip the hassle and ensure your RV is properly winterized? Book Roadwise Winterization Service and let our experienced mobile technicians take care of it for you!

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