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re: Mold/mildew on sheetrock around return vent?
Posted on 5/19/24 at 6:41 am to Sheepdog1833
Posted on 5/19/24 at 6:41 am to Sheepdog1833
If it is a ceiling return, you have cold air from in your house getting to hot air in your attic causing condensation.
1
Posted on 5/19/24 at 7:10 am to 2 Jugs
This is the answer
The next question is where and why hot air is mixing in.
I had a pretty bad leak in one of my ducts. This caused cold air to be released into my attic.
But worse than that, this caused a negative pressure inside my house because it was sucking more air out than was being returned.
This caused warm moist air to be pulled in through my outlets and light switches. They were always dirty and wet.
The next question is where and why hot air is mixing in.
I had a pretty bad leak in one of my ducts. This caused cold air to be released into my attic.
But worse than that, this caused a negative pressure inside my house because it was sucking more air out than was being returned.
This caused warm moist air to be pulled in through my outlets and light switches. They were always dirty and wet.
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