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Old 11-18-2018, 09:52 AM   #1
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Winterizing with MH compressed air?

I am new to this forum and new to the MH ownership. Traded 5th wheel for a
2013 Monaco Knight. I have always use antifreeze to winterize my 5th wheel, but want to use air to winterize my MH. My question is , Can I use the compressed air from the Monaco system to blow out my waterlines while on the road. This seems to be easier and cheaper than the antifreeze. Any help will be greatly appreciated.

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Old 11-18-2018, 09:56 AM   #2
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I did this for years on previous rigs with no issues. If you have an aquahot, you are better off using antifreeze as you can't get all if the water out. And....it is super expensive to replace.

John and Debi
2008 Beaver Contessa, 2005 Jeep Grand Cherokee,
28 years retired Fire Captain Tales of the Muttley Crew
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Old 11-18-2018, 11:18 AM   #3
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Location: Columbus, MS
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Hi ! Welcome to IRV2! We're sure glad you joined the gang!

I don't see any problem using the coach's air supply!

Good luck, happy trails, and God bless!
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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Old 11-18-2018, 12:43 PM   #4
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It is possible to use the coach air system, however, insure a pressure regulator is used, most recommend 50 PSI maximum. I have used air for the past two years with no issue, but we do live in Texas so does not get as cold as northern climates.
1997 Monaco Dynasty
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Old 11-18-2018, 06:19 PM   #5
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Been using air for 18 years no issues. I do pour anti freeze down each trap and toilet.
OKrver 2002 HR Ambassador
2003 Dodge Dakota 4X4
2012 Polaris ESP 850 Tour
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Old 11-18-2018, 08:45 PM   #6
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Heed Captjake1's advice. If you have an AquaHot, DO NOT use air. Unless they've re-designed their mechanical configuration inside of the reservoir, like "Jake" said you won't get enough water out to protect it. You can use air for the rest of your coach, but be sure to push antifreeze thru your AquaHot. The manual for our AquaHot says it is absolutely essential to not use air, but to only use antifreeze.
Jim & Angie, Boise, ID
2006 Monaco Dynasty Countess III
2017 GMC Acadia Denali
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Old 12-13-2018, 06:38 PM   #7
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Air to blow out lines

I think it’s ok to use air, but not over 35 pounds. I drain the fresh tank and blow out everything. Then pump antifreeze thru everything. Then blow out the excess antifreeze. Since it takes so much antifreeze with the aqua hot system, when blowing out the anti freeze, I save what I can for the next time. I do spill enough to still have some in the drains.

Ready to retire and get out of Oregon
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air, winter

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