Winterizing: Antifreeze or Compressed Air Blow-Out?

The friendliest place on the web for anyone with an RV or an interest in RVing!
If you have answers, please help by responding to the unanswered posts.

Joezeppy

Well-known member
Joined
Mar 16, 2009
Posts
2,622
Location
Upstate NY - Kuyahoora Valley
I would say is six of one and half dozen of another. Can't hurt to open them but the only benefit I see is it might save a few minutes since there is less to drain in the Spring. You'll still have to sanitize the entire system either way.
 

Rene T

Site Team
Joined
May 20, 2011
Posts
20,297
Location
Farmington NH
I did open them before, then I closed them and ran antifreeze in.
There's no water in the system at this point, so what would it matter?
I'm thinking it might minimize the residue and make flushing the system next year easier.
This is my first winterization, so I'm sort of experimenting.
Maybe I won't open them.
At a minimum, you should open each low point drain just to see if the pink stuff is at the vves
 

msw3113

Well-known member
Joined
Aug 9, 2017
Posts
506
Location
New Hampshire
Being a belt-and-suspenders person, I always used both methods. Maybe it took some extra time but the effort was worth my peace of mind.
 

Edd505

Well-known member
Joined
Mar 22, 2021
Posts
652
Location
Elephant Butte, NM
I use the air always, I live where it can freeze and I RV all year. Using the air I can use it and re winterize in a few minutes. Open low points, all air open all faucets & shower, open valve and purge water from toilet water valve. Don't for get the outside shower, if you have a washer dryer consult the manual. Get a fitting and connect the air hose with the PSI set to 25-30.

Hose adaptor.jpg
 

Rene T

Site Team
Joined
May 20, 2011
Posts
20,297
Location
Farmington NH
I use the air always, I live where it can freeze and I RV all year. Using the air I can use it and re winterize in a few minutes. Open low points, all air open all faucets & shower, open valve and purge water from toilet water valve. Don't for get the outside shower, if you have a washer dryer consult the manual. Get a fitting and connect the air hose with the PSI set to 25-30.

View attachment 158148
Unless you have a really big compressor with a very large tank, I would go around opening the faucets one at a time until all the water is gone then close it and move on to the next faucets. Do the low point drains last and one at a time slso
 

John From Detroit

Well-known member
Joined
Apr 12, 2005
Posts
27,011
Location
Davison Michigan
Used pink stuff the first year and had a lot of "Fun" (NOT one bit) getting the lines cleared come spring.
Used air after that.. My procedure using a 6 Gallon pancake compressor with regulator set to 50 PSI.
Open all valves.. BLOW till I ran out of air.
Force cycle ice maker.. then close the supply valve to it (Gravity siphons the lines clean when the solenoid opens)
Flush toilet and lock vlave open (Used somethign to hold pedal down or use partner)
Once compressor refills Blow again
Release toilet pedal
Once compressor refills blow again like 10 times.
Close upper valves
Will there be a few drops of water remainin in the lines: yes
Will they cause issues: NO
Then pour pink in drains, traps and toilets (Where flushing them out in the spring won't even be necessary as you will flush them in normal use)
 

FunSteak

Well-known member
Joined
Aug 24, 2013
Posts
627
Location
NE Illinois
My compressor is too small to blow out effectively, so I use pink stuff. Our rig is quite simple, and the whole process takes 15 minutes or less.

First I drain the tanks, including fresh of course, and bypass and drain the water heater.

My rig has three input fittings - tank, city and black flush. I have a small electric pump that I connect to each input and pump antifreeze for a few seconds to ensure those lines are filled with pink. Fresh tank drain is open, so any that makes it into the tank goes right back out.

Then I disconnect the suction line from the pump and attach a 3' hose. That goes into the jug of pink stuff. Turn on the pump, and run each fixture and the the toilet until it comes out fully pink. This also ensures the traps are all filled with antifreeze, as well.

Reconnect the pump line and I'm done. Easy peasy.

In the spring, I just connect my garden hose to the city line and run the heck out of everything to clear the lines. Takes 15 minutes or so. We might get a bit of foam when first turning on a faucet during our first trip, but that clears quickly.

This works well for me. Easy and quick.
 

Edd505

Well-known member
Joined
Mar 22, 2021
Posts
652
Location
Elephant Butte, NM
Unless you have a really big compressor with a very large tank, I would go around opening the faucets one at a time until all the water is gone then close it and move on to the next faucets. Do the low point drains last and one at a time slso
I use my small 6 gallon harbor freight the 60 gallon in my shops is too large to haul out. I guess I could park the RV in front of the shop and run a hose. The 6 gallon Looks like this but it's a CP , dial in the lower pressure and it is able to keep up.
 

Latest posts

Forum statistics

Threads
126,192
Posts
1,290,808
Members
132,423
Latest member
AmasiaTravel
Top Bottom