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Old Yesterday, 06:51 AM   #1
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2018 30' International
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Southern Pines , North Carolina
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Winterizing with compressed air?

Have a 2019 30’ International. Guy I bought it from in PA only drained the lines and hot water tank and then applied compressed air with an adapter at the city water inlet to winterize all the lines. Seemed to work for him in northern PA.

My question is does pressurized air do anything to get the water out of the water pump and bypass valves? Everything else seems to blow out pretty well…
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Old Yesterday, 07:04 AM   #2
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Originally Posted by NC-Serenity View Post
Have a 2019 30’ International. Guy I bought it from in PA only drained the lines and hot water tank and then applied compressed air with an adapter at the city water inlet to winterize all the lines. Seemed to work for him in northern PA.

My question is does pressurized air do anything to get the water out of the water pump and bypass valves? Everything else seems to blow out pretty well…
1. You will need to disconnect the water outlet for the pump and drain it. Have a towel or something ready. Not a lot of water, but it will be some. I believe it tells you to do so in your AS manual.

2. I recommend cleaning out the inlet water filter and dabbing the water up there as well. It could freeze and damage the filter.

Word of warning. The outlet valve can be a problem leaking if you don't get it tight enough. So should check that when you dewinterize in the Spring. I personally used the anti-freeze as well as blow out the line. I didn't like connecting and disconnecting that valve just because it is a bit of a mess, and I didn't like the fact it had a tendency to leak. And it's pretty easy to put in the pink stuff if you have a valve to attach a hose before the water pump to pump it through the system. Then you don't have to worry about the pump. This year I'm just going to blow out the line since I have heated space for storage in my new garage.

But lots of people just blow it out and are good to go.
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Old Yesterday, 07:08 AM   #3
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Originally Posted by NC-Serenity View Post
Have a 2019 30’ International. Guy I bought it from in PA only drained the lines and hot water tank and then applied compressed air with an adapter at the city water inlet to winterize all the lines. Seemed to work for him in northern PA.

My question is does pressurized air do anything to get the water out of the water pump and bypass valves? Everything else seems to blow out pretty well…
It does not in my trailer. When I have finished blowing out my lines, there is still water left in the strainer and water inlet to the pump. I always remove the strainer and empty the water, then run the pump for a few seconds to get any internal water out. I then put in the antifreeze through the winterization valve. Belt and suspenders cause I hate fixing thing that break from freezing.
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Old Yesterday, 09:13 AM   #4
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Hello
I have used air exclusively to winterize my camper. You need to really run the air and cycle the toilet etc. don't forget about outside shower etc. remove outlet from water pump as others mentioned and run it for a few seconds with towel under there to catch water. Pour some antifreeze down all the drains and you are done.
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Old Yesterday, 10:22 AM   #5
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NC-Serenity, yes you can winterize by using air only. I have been doing this since '09 because I found the location of my water pump in my 25FB to be very difficult to deal with. Our local Airstream dealer told me that they winterize all of their trailers, and the ones customers bring in, using only air.
Once I am "done" with blowing out all the lines and fixtures, I turn on the water pump which clears the water out of the pump and sends it down line. I then reconnect the air and blow the lines again. You certainly can get to the pump and remove the screen and filter. If you can do that easily I would suggest that you install a bypass designed to draw antifreeze from the gallon jug and put it in the lines. This, is probably the best method of them all.

I live on the Eastern edge of Washington state. It gets very cold here, many days in the teens and you can count on single digit nights each year. Getting below zero happens now and then but it is not real common.
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Old Yesterday, 11:53 AM   #6
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we stopped using antifreeze a few years ago.

we only blow air now. we only add antifreeze in the toilet top and in the sink traps

search this forum on many posts on how to blow out
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