Forum Discussion
45Ricochet
Oct 15, 2015Explorer
willi4nd wrote:
New to RV's...can I just blow the lines out and be done or is it advisable to pump RV AF through the system also?
LINK
Water freezes. When it does, it cracks and breaks things. So, you need to get it out of the coach when storing it in freezing conditions. There are 3 schools of thought on this. One is to blow the water out with compressed air. The second is to pump RV antifreeze through the system, forcing the water out. The third is a combination of the two, which is my personal preference. While everyone seems to claim favorable results with either method, I have seen where blowing out a system can still allow water to build and cause damage. It's tough for air to carry all of the water out so some still hangs around. Eventually it condenses and settles out and builds up in a low point, which can then freeze. Using pink RV antifreeze forces the water out because it actually displaces the water. It can't bypass it, like air can, but instead forces it out the water lines into the drains. You need to keep some antifreeze in the traps anyway to protect them and to prevent vapors from backing up into the RV. The problem is that it's bitter tasting and can leave an aftertaste. That's why I prefer the third method, which is pumping the pink stuff through the system, then blowing out the lines with compressed air afterwards to minimize any antifreeze taste from collecting in the water lines.
Each RV is different so your method of winterizing will vary but following are a few links to some winterizing instructions done by some members:
About Motorhome Group
38,758 PostsLatest Activity: Nov 03, 2025