As the days get shorter and the mercury starts to drop, it becomes incredibly important for RV owners to take proactive steps to prepare their rigs for the colder months ahead. Even if you plan on occasionally using your RV through the winter, completing a proper winterization routine is a must.
Below-freezing conditions can easily cause water lines to freeze and burst, batteries to lose their charge permanently, and pests seeking refuge from the cold to cause serious structural damage. This quick guide offers essential tips on how to winterize your RV so that it stays in peak condition through the most demanding months of the year. For Washington residents, staying ahead of freezing weather is absolutely vital!
1. Prepping the Interior
The interior of your coach is the perfect place to start your winterization checklist.
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Preserve Your Electronics: Remove all batteries from dedicated devices such as smoke alarms, propane detectors, and flashlights. Store them together in a clean, dry container indoors so you can easily track what needs to be renewed for next spring.
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Clean & Odor-Proof the Kitchen: Fully defrost your freezer and thoroughly clean out the refrigerator. Leave an open box of baking soda inside to absorb ambient odors and keep the air fresh.
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Deep Clean & Inspect Cabinets: Remove all food items and belongings from your cupboards. Inspect the corners carefully for signs of mice or vermin; if you discover any tiny entry points or gaps, seal them immediately with expanding foam.
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Control Moisture: Because the Pacific Northwest deals with high ambient humidity, place a few dishes of desiccants or moisture absorbers throughout your trailer to prevent mold and mildew from forming. Keep cabinet doors propped open to maintain healthy airflow.
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Protect the Upholstery: Draw all your window blinds and shades before locking up to protect your interior furniture from sun-fading over the winter.
2. Securing the Exterior
Taking care of your RV’s exterior components protects your investment from intense winter weather elements.
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Tire Maintenance: Check and inflate your tires to the manufacturer’s exact recommendations so the trailer settles evenly during long storage periods. Place heavy-duty chocks tightly in front of and behind the tires to completely immobilize the rig, and use specialized wheel covers to shield the rubber from harmful UV rays.
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Battery Storage: Disconnect and remove your RV’s main house batteries. Store them indoors in a temperature-controlled area like a garage or basement, ensuring they are kept up off concrete floors to preserve their lifespan.
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Chassis Inspection: Grab a flashlight and carefully examine the entire underside of your chassis. Look for any minor cracks or holes where cold air or pests could breach your trailer, and fill them securely with expanding foam.
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Care for Your Awning: Make sure your patio awning is entirely clean and 100% dry before rolling it up tightly for the winter to avoid mold growth.
3. Safeguarding Your Water Tanks & Lines
Any leftover water trapped inside your RV’s plumbing lines presents a massive hazard once temperatures plummet. Frozen water expands rapidly, which can easily crack your pipes, split fittings, and lead to catastrophic water damage when things thaw out.
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Drain and Flush: Winterizing your plumbing system requires completely draining your fresh water tank, grey tank, black tank, and water heater.
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Add RV Antifreeze: Once drained, use a bypass kit to introduce specialized, non-toxic RV antifreeze throughout your entire water system, ensuring a small amount is poured down every sink and shower drain to protect the P-traps.
Need Professional Help? Visit Sumner RV!
While many owners enjoy handling this routine themselves, it can be a time-consuming process. If you don’t have the time or prefer absolute peace of mind, you can bring your rig to our professional service center where an authorized technician can handle the job quickly and flawlessly.
Sumner RV proudly serves our local communities across Sumner, Poulsbo, Silverdale, Seattle, Bremerton, Olympia, Kent, Renton, and Tacoma, Washington. Whether you need winterization parts, professional maintenance, or are shopping for a new camper, give us a call or stop by either of our convenient locations today!
