Most RV dealers charge between $150-300 for winterization services that primarily involve blowing compressed air through your plumbing lines and adding antifreeze to your holding tanks. The actual process takes about 30 minutes of hands-on work, which surprises many owners when they learn how straightforward it really is.
The service typically includes draining your fresh water tank, clearing water lines with compressed air, and pumping RV antifreeze through the system until it appears at each faucet. What many owners don’t realize is that most modern RVs are designed with drain valves specifically to make this process owner-friendly. The tools needed — a basic air compressor attachment or simple antifreeze pump — often cost less than two professional services.
However, there are legitimate reasons some owners choose professional winterization. If your RV has a washing machine, ice maker, or complex filtration system, the process involves additional steps that vary by manufacturer. Dealers also typically include inspection of exterior components, slide-out seals, and propane connections as part of their service, which adds value beyond just the plumbing work.
The middle ground many experienced owners use is learning the basic winterization process themselves while having dealers handle it during warranty periods or when complex systems are involved. RV owner manuals typically include step-by-step winterization instructions specific to your model’s plumbing layout, which removes much of the guesswork about what needs attention and what doesn’t.