To Winterize or Not? Understanding the Necessity
One of the most common questions among RV owners heading into the off-season is whether complete winterization is actually necessary. The short answer depends entirely on your local climate and whether your rig will remain heated. If temperatures drop below freezing and your RV sits unheated, trapped water in your plumbing lines will freeze, expand, and inevitably crack your pipes, fittings, and water pump.
Even if you live in a milder climate, a sudden hard freeze can catch you off guard. Complete winterization—which involves draining the system and pumping non-toxic RV antifreeze through the lines—provides total peace of mind. Skipping this step to save a little time usually results in expensive plumbing repairs come spring.
How Much Pink Stuff Do I Need? First-Time Winterizing
If this is your first time winterizing, estimating how much RV antifreeze (the pink stuff) you need can be tricky. For a standard travel trailer or motorhome, you will typically need between 2 to 3 gallons of RV-specific propylene glycol antifreeze to thoroughly protect the system.
Follow these essential steps for a foolproof first-time winterization:
- Drain your fresh water, gray water, and black water tanks completely.
- Open your low-point drain lines and activate the water heater bypass valves to protect the tank.
- Drain the water heater and remove the anode rod if applicable.
- Use a water heater bypass kit and either pump antifreeze using the water pump convertor kit or blow out the lines with compressed air first, then pump the pink stuff through every faucet until it runs pink.
- Don't forget to pour a cup of antifreeze into each sink and shower P-trap to protect the drain lines.
Protecting Tires, Managing Covered Storage, and Shifting Spots
Leaving your RV sitting in one spot all winter can wreak havoc on your tires and exterior. UV rays, moisture, and weight pressure lead to premature sidewall cracking and flat spots. If possible, invest in breathable covered storage to shield your roof and seals from harsh snow, ice, and sun exposure.
Essential Tire Care During Storage
- Inflate tires to their maximum recommended cold pressure before parking.
- Use tire covers to block damaging UV rays and ozone degradation.
- Place rubber, plastic, or wooden tire mats underneath the tires to prevent moisture absorption from the cold ground.
- If you are changing storage spots this season, ensure the new location features a hard, level surface rather than soft mud or gravel that retains moisture.
Heating Under the Trailer: Is It a Good Idea?
If you plan to use your RV through the winter or live in it during freezing temperatures, you might consider placing a heating source under the trailer to keep the underbelly and holding tanks from freezing. While skirting the trailer and running a low-wattage electric space heater or heat tape can work, it requires extreme caution.
Unattended space heaters under rigs present a serious fire hazard and draw heavy electrical loads. If you choose to heat under the trailer, always use thermostatically controlled, certified freeze-prevention devices, heavy-duty outdoor-rated cords, and robust skirting made of heavy vinyl or foam boards to block freezing winds.