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Old 04-08-2024, 03:54 PM   #1
Join Date: Mar 2016
Posts: 97
A/C condensate problem

Our rear ac unit is leaking condensate into the middle rear ceiling light. I removed the ac unit cover and checked the drain openings-all good. Checked the bolts that secure the unit to the roof, two rear bolts are tight, two on the side will not tighten, so I am thinking that the gasket is not sealed? Can I remove the two side bolts and try and relocate them in order to get the gasket to seal? is offline   Reply With Quote
Old 04-13-2024, 08:49 PM   #2
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Join Date: Jul 2018
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I had the same issue and assumed it was the a/c as well. It turned out to be the-rear cap seal at the roofline. There is a joint in the middle of the raised joint seal that was leaking. I reworked the whole joint and have not had an issue since. You can try and get on the roof with a hose and spray around the a/c unit with someone inside to watch to confirm if it is in fact the unit vs the cap joint seal.
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Old 04-14-2024, 07:38 PM   #3
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Join Date: Apr 2012
Posts: 200
I am not going to help you, but I am facing a similar issue.
On heavy rain, the back door side corner of our back bedroom, the floor is soaking wet, plus we get the odd drop coming out the A/C duct.
We had the A/C unit replaced a year ago and can't help but think that is the issue. However, I am not convinced since I did get the repairman to come back and check it out and recalk. So maybe he missed something!!!
Last Summer I went up there and applied some Dicor Self-leveling Lap Sealant along the seam, but clearly that did not help.
In any case, feedback from this forum may provide some helpful insight.
2021 GM Denali HD 3500 Dually Diesel 4x4
2014 FL36
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