Freezing temperatures are hard on a camper - water expands as it freezes and can split lines, pumps, and tanks. A proper winterizing routine prevents expensive damage and makes spring startup easy. Here's the checklist and the products that make it simple.
Shop RV winterization products.
Winterizing checklist
- Drain the fresh, grey, and black water tanks and the water heater.
- Blow out or pump RV antifreeze through all water lines until it reaches every tap and the toilet.
- Protect the water pump - run antifreeze through it; see water system parts.
- Bypass the water heater so you don't waste antifreeze filling the tank.
- Inspect and treat seals around doors, windows, and the roof to keep moisture out.
- Battery care - keep lithium batteries within their storage state-of-charge and temperature range; see Victron battery guidance.
- Cover and ventilate to prevent damp and mildew.
Don't forget the chassis
Before storage, give the suspension and brakes a once-over and re-torque hardware - see our suspension maintenance guide. For a fuller seasonal routine, the sister-brand spring maintenance checklist pairs well with winterizing.
Frequently asked questions
Do I need RV-specific antifreeze?
Yes - use non-toxic RV antifreeze rated for potable water systems, never automotive antifreeze.
What's the most commonly damaged part if I skip winterizing?
The water pump and exposed water lines - frozen water splits them. Protecting the pump is essential.
Shop winterization products and water system parts. Ships from Upland, CA.