Do You Really Need to Winterize?
If you live in a climate where temperatures drop below freezing, winterizing is not optional—it is essential. Even a single night of unexpected freezing temperatures can burst your PEX plumbing lines, crack your water pump, and ruin your hot water heater.
Many new owners ask if they can skip this process if they live in an area with mild winters. If there is a risk of a freeze warning, you must take action to protect your water system. Replacing an entire plumbing system is a costly lesson that no RVer wants to learn the hard way.
The First-Timer's Guide: Antifreeze and Systems
The biggest question for beginners is always: "How much pink stuff do I need?" For most travel trailers and fifth wheels, you should plan on purchasing two to three gallons of non-toxic RV-specific antifreeze. Always double-check your owner's manual to see if your rig has an onboard water heater bypass valve, which will save you significant product.
Step-by-Step Winterization Essentials
- Drain all holding tanks, including the fresh water, gray, and black tanks.
- Open all low-point drains and run your faucets to clear residual water.
- Bypass your water heater to prevent wasting gallons of antifreeze filling it up.
- Use a water pump converter kit or an external hand pump to pull antifreeze through your lines starting from the faucet furthest from the pump.
- Don't forget the toilet valve and the exterior shower—these are common spots for freeze damage.
Choosing the Right Storage Solution
Where you park your rig for the winter is just as important as the plumbing. While many opt for covered storage to keep snow and ice off the roof, others choose climate-controlled indoor storage buildings. If you are building your own storage, ensure the structure has proper ventilation to prevent moisture buildup and mold growth.
If you are planning to store your RV near [Glacier National Park](/park/glacier-national-park), be aware that extreme high-altitude conditions can accelerate roof seal degradation. Winter closures in national parks mean you won't have access to your rig, so make sure your winterization is airtight before you pack it away for the season.