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06-22-2016, 06:03 PM
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#1
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Senior Member
Join Date: Jan 2016
Location: Gainesville
Posts: 697
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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 [emoji56])
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?
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Buddy Ray - Atlanta
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Jayco 2016 Eagle HT 26.5RLS
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Max Tow Pkg, 36gal tank
Reese Sidewinder and Reese Titan 16k hitch
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06-22-2016, 06:11 PM
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#2
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Senior Member
Join Date: Jul 2015
Location: Detroit
Posts: 294
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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.
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2005 Ford Excursion 6.8L, 4.56
2016 Eagle 324BHTS, P3, PP 3P
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06-22-2016, 06:40 PM
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#3
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Senior Member
Join Date: May 2013
Location: Dale Hollow Lake Tn/Ky
Posts: 2,525
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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.
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06-22-2016, 06:55 PM
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#4
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Senior Member
Join Date: Apr 2016
Location: Kingman AZ and where our Seneca is today.
Posts: 3,114
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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.)
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06-22-2016, 06:56 PM
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#5
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Senior Member
Join Date: Jan 2015
Location: DFW
Posts: 3,493
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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!
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Dan
'24 GMC 2500 AT4X AEV Edition
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06-22-2016, 07:47 PM
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#6
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Senior Member
Join Date: Mar 2015
Location: Port Orchard
Posts: 2,064
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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.
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Don
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06-23-2016, 05:52 AM
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#7
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Senior Member
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,714
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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
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Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
145days boondockinig in2023 2022/151 2021[/COLOR]
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06-23-2016, 06:43 AM
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#8
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Senior Member
Join Date: May 2015
Location: Campbell Hall
Posts: 2,835
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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.
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And proud of it!
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06-23-2016, 09:22 AM
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#10
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Senior Member
Join Date: Feb 2015
Location: Winnipeg
Posts: 942
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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.
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Geoff & Jill
& Sierra, the little white monster
2013 Ford F-150 XTR SC Ecoboost
2015 Jayco Jay Flight 24FBS
Winnipeg, Manitoba
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06-23-2016, 09:44 AM
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#11
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Senior Member
Join Date: May 2012
Location: Minnesota
Posts: 9,739
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200 psi is badddddd. You could buy a regulator for the portable tank. You could hook the portable tank to a small compressor.
At home I use my small 5 gallon compressor. I made up my own adaptor fitting to connect the compressor to the city water connection. There are two key elements. At the city water connection I first install a ¼ turn hose shutoff valve, I start out by making sure the valve is closed. Then to that I have an adaptor that has an air compressor hose airline quick connect so I can connect my compressor to the adaptor and not have to deal with it. I set my regulator to a low pressure, I like 20-25 psi. To start I open usually the farthest faucet valve (kitchen sink). Once the compressor is charge I open the ¼ turn valve and start pushing the water out. I work my way around to all the faucets and water heater, and so forth. If I feel the compressor is low on air I close the ¼ turn valve and let it charge up again. On additional thing I do is make sure during the blow out process I open all the water heater bypass valves to ensure there is no water trapped on either side of the valve.
You defiantly do not get all the water out using this method, any residual water will work its way down to the lowest points. If the pipe/fittings are not full of water typically when the water expends it has somewhere to go, and not bust your fittings.
You are down south, so blowing out is probably just fine. I like to only blowout between trips if I know it will be below freezing and I will be out again shortly. But at the end of the season, I first blow out the lines then fill them with antifreeze. I to, blow out the antifreeze when all done. It is cold here and I do not like the antifreeze diluted. But as others have said, RV antifreeze is cheep insurance.
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06-23-2016, 10:12 AM
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#12
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Senior Member
Join Date: Oct 2014
Location: Bethlehem
Posts: 277
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Quote:
Originally Posted by Jagiven
You are down south, so blowing out is probably just fine. I like to only blowout between trips if I know it will be below freezing and I will be out again shortly. But at the end of the season, I first blow out the lines then fill them with antifreeze. I to, blow out the antifreeze when all done. It is cold here and I do not like the antifreeze diluted. But as others have said, RV antifreeze is cheep insurance.
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During normal winterizing, I'll blow the lines out then fill and leave the antifreeze.
If it drops below freezing after I've de-winterized, I'll just blow them out. Takes about five minutes and it's cheap insurance.
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2018 Silverado 2500
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