Jayco RV Owners Forum

Thread Tools Display Modes
Old 06-22-2016, 07:03 PM   #1
Senior Member
BuddyRay's Avatar
Join Date: Jan 2016
Location: Decatur
Posts: 643
Winterizing with Air.

So this is an 'off season' question that I just decided to ask after reading another thread.

So one Winterizing method is to use compressed air. I've tried this approach with my former TT which had a pretty simple plumbing system. And even then I didn't feel like I was doing it right.

I have a portable air tank that I can take to the filling station and load up. But that tank doesn't have a regulator so if it has 200 lbs of pressure in it, when I start blowing out the plumbing it's putting 200lbs of pressure in there (yea-I know not to do that )

I also have a portable compressor. If I use that, it can't move enough air to even get up a few pounds of pressure.

So is there any option other than buying the type of commercial compressor used to drive power tools - which I have no other use for?? How do those of you who winterize with air do it? What equipment do you use?

Sent from my iPhone using Tapatalk

Buddy Ray - Atlanta
Jayco 2016 Eagle HT 26.5RLS
Ford 2016 F150 Lariat, 3.5L V6 Ecoboost
Max Tow Pkg, 36gal tank
Reese Sidewinder and Reese Titan 16k hitch
BuddyRay is offline   Reply With Quote
Old 06-22-2016, 07:11 PM   #2
Senior Member
Join Date: Jul 2015
Location: Detroit
Posts: 292
I used to use a 7 gallon Husky compressor without any issues. It's relatively portable, but not optimal. If you don't want to invest a couple hundred into a larger compressor, just use the on-board pump and antifreeze.

2005 Ford Excursion 6.8L, 3.73
2016 Eagle 324BHTS, P3, PP 3P

jasoncw is offline   Reply With Quote
Old 06-22-2016, 07:40 PM   #3
Senior Member
Join Date: May 2013
Location: Dale Hollow Lake Tn/Ky
Posts: 1,944
The small 12V compressor works fine to blow out your lines. Just hook it to the nipple you put on the city water input and turn it on. A few lbs of pressure will start building up in the closed system. Go inside and open the sink, shower, toilet water valves one at a time. Leave one open until it spits just air and move on to the next. Don't forget to flush the toilet until you get air. I go back and repeat the process a second time on each faucet. If you drain the low point drains first, that will remove most of the water in the lines before you turn on the compressor. The low point drains need to be closed when you blow the lines. To finish pour a cup of pink stuff into each sink drain and shower drain. Oh, forgot the water heater. Bypass the water lines to the water heater and then remove the drain plug.

You do not need a big fancy compressor. The small low volume 12v ones work great and you are not going to blow up a line.
Bassdogs is offline   Reply With Quote
Old 06-22-2016, 07:55 PM   #4
Senior Member
SloPoke's Avatar
Join Date: Apr 2016
Location: Sandy, Utah (Salt Lake City)
Posts: 392
My experience... you need to push out the water and displace it with air. Air is not going to push all the water up a vertical pipe to the sink or shower, so you need enough air volume at 40 PSI to be able to push water from the lowest point in your plumbing system to a Low Point Drain. (That depends on how your coach plumbing is configured and how your plumbing drain lines are ran.)
SloPoke is offline   Reply With Quote
Old 06-22-2016, 07:56 PM   #5
Senior Member
Bookemdanno's Avatar
Join Date: Jan 2015
Location: Frisco
Posts: 1,567
I can't locate the product that i have on Costco's website, but I know they still had some in the store this past weekend when I was there. It's a jump start/air compressor/emergency light in one unit. That's what I use to blow out the lines of our fiver. I also use it to air up the tires. It has worked flawless in the last 3 years that I've had it!
'16 Ram 3500 MC CTD Dually, 4:10 rear
'14 Ram 2500 MC CTD (gone)
'14 287BHBE (gone)
'16 North Point 377RLBH (current and hopefully last)
Bookemdanno is online now   Reply With Quote
Old 06-22-2016, 08:47 PM   #6
Senior Member
hoppers4's Avatar
Join Date: Mar 2015
Location: Port Orchard
Posts: 1,170
I use a Husky 1.5 gallon 135 PSI 115VAC compressor. It cost me somewhere in the neighborhood of $100 about 8 years ago. I'll run the pressure up to 35-40 PSI to blow the lines and then pour a bit of RV antifreeze in the P traps and toilet.
hoppers4 is offline   Reply With Quote
Old 06-23-2016, 06:52 AM   #7
Senior Member
Seann45's Avatar
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 9,701
A 110 volt compressor from Harbor Freight can be found for 49-99 dollars.. or you can get a regulator valve for your air tank that you can use to drop the pressure with
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
175 days boondocking in 2017
215/2016, 211/2015, 196/14, 247/13, 193/12

Seann45 is offline   Reply With Quote
Old 06-23-2016, 07:43 AM   #8
Senior Member
mike837go's Avatar
Join Date: May 2015
Location: Campbell Hall
Posts: 2,837
Tried it. Don't like it.

I've got a 5HP commercial compressor with a regulator, so the blow-out was as complete as possible.

However, you can never get ALL of the water. The droplets will coalesce in the lowest point and form ice. Not my idea of a good time. And what do you do about the drains?

I'll spend the $20 for a couple of gallons of anti-freeze. Even if some water mixes with the antifreeze, it won't crystalize and expand. Plus, a 1/2 cup down each drain covers the traps and the waste tanks.
TT 2015 19RD "TheJayco"
TV 2003 F-350 "Montblanc" - Housebroken chore truck

Sitting in The Cheap Seats.
And proud of it!
mike837go is offline   Reply With Quote
Old 06-23-2016, 07:46 AM   #9
Senior Member
Join Date: Oct 2014
Location: Bethlehem
Posts: 108
We have several compressors at home for one job or another but I got one of these for about $60 one year for a Black Friday deal:
Shop Campbell Hausfeld 0.33-HP 2-Gallon 100-PSI Electric Air Compressor at Lowes.com

I'm surprised every time it works but it does. I dialed the output pressure down to ~20PSI and bought a quick disconnect fitting:

I originally had the Schader valve but that requires two people.
2016 Jay Flight SLX 287BHSW
2015 Silverado 1500
BJR is offline   Reply With Quote
Old 06-23-2016, 10:22 AM   #10
Senior Member
North of 49's Avatar
Join Date: Feb 2015
Location: Winnipeg
Posts: 697
I have an eight gallon compressor, since between the trailer, my truck and DW's car, plus various other things that require air, a compressor is a necessity in our house. Also, in the winter here, temperatures go down to -30* for extended periods of time, so proper winterization is mandatory. I blow out the lines using the compressor, pump RV antifreeze through them, them blow it out again. It's three times the work, but it's guaranteed to be done correctly. I'd rather spend the in the fall doing it right than dealing with the hassle in the spring fixing it.

Geoff & Jill
& Sierra, the little white monster
2013 Ford F-150 XTR SC Ecoboost
2015 Jayco Jay Flight 24FBS
Winnipeg, Manitoba
North of 49 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 02:49 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.