AC duct lleaks

[Dr_Quick]

Last fall while the AC was on in my trailer, I went to move the roof antenna, and noticed a lot of cool air coming down around the antenna crank area. I checked the duct outlets at the ceiling and just about all six of them were leaking, or had no seal at all. Whatever they had used at the factory had dried out and came off. So I removed each duct and resealed them.

One response I got from the posting was check ducts at AC unit too. About a week ago we were in trailer with AC on, and when I went to move antenna, still felt a lot of air.

I took the grill down, then the metal plate that secures unit to ceiling/roof. I could not believe what I saw. most of the supposed aluminum seal was gone and a whole lot of air was blowing into the ceiling joist space. Sealed everything up with a commercial quality aluminum duct tape. Tested it out, and ZERO leaking now. Maybe the AC will work better now, as I will be cooling the inside of the trailer and not the ceiling cavity. 🙂

[fpresto]

I agree with Steve it is very common. All three of my 5th wheels needed the ducts sealed. I too used a good aluminum tape.

[therink]

Very common. I have had to reseal with foil tape the duct work and vent openings on all 3 of the brand new rvs I have owned. Not a lot of effort goes into that detail at the factories.
Steve