How to Winterize Your RV: 9 Simple Steps

RV adventuring is one of the most fulfilling and entertaining things you can do on four wheels, but many people prefer to keep their road-tripping to the warmer months. If that describes your family, it’s essential to take the necessary steps to winterize and protect your RV in cold weather. Here’s how the process works. 

Thermometer on snow shows low temperatures in celsius or farenheit.

Before getting started, it’s a good idea to have your owner’s manual on-hand, as well as cleaning supplies, a flashlight, an air compressor, and a basic tool set. Once you have those items handy, the first thing you’ll need to do is drain and clean the black and grey water holding tanks. Be sure to dispose of the contents carefully and responsibly.  

After the black and grey water tanks are sorted, drain the RV’s freshwater tank, and be sure to flush the water out of the lines. To do so, you’ll need to run all interior water fixtures into containers and dump the water outside to prevent it from returning to the tanks. While you’re doing this, it’s important to drain the water from all interior equipment, including the water heater, dishwasher, and other items. Your water heater may also require a separate maintenance procedure outlined in the owner’s manual.  

Aerial view of snowy road and forest in winter. Wildlife in winter

Once the water is clear, flush an RV antifreeze through the system, opening interior water taps until you see the pink antifreeze coming out. It’s also important to push antifreeze through the water intake on the RV’s exterior, and most experts recommend flushing it through the toilets, shower, and all sink fixtures. 

Beyond working with the RV’s water system, you’ll want to make sure that all interior power equipment is unplugged and stored properly. It’s also a good idea to switch off the battery disconnect and unhook any gas or propane lines. Carefully clean the interior to avoid mold and wildlife issues, especially in the kitchen.  

If you’re storing the RV outdoors, a cover is a good idea, and many people purchase separate tire and wheel covers for extra protection. Since the RV will be stored with a cover, a low-power, cordless dehumidifier can help remove moisture and prevent mold.  

RV driving on fresh snow after a rare winter storm brought snow to the Oregon Coast, February 2023.

If you’d like a more detailed, in-depth walkthrough of how to winterize and store your RV, come see us at Valley RV. Our staff has years of experience storing, winterizing, and preparing RVs for travel, and we’d be excited to pass that knowledge along to you. We can also help you configure and order the Jayco RV of your dreams, and our preowned inventory offers something for everyone. 

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