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Houston Home improvement

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What is causing an ac vent on my second floor to drip water and form mildew?

Charlie: Leo in Kingsland, Texas writes to us, as the next question. Tom, he says, “I have a multi-story house and one of the vents on the second floor is dripping and we now have mold,” or he thinks more likely mildew. “The only thing that has changed is the outside unit was replaced about two years ago, and is a bit more capacity than the original. Any ideas?”

https://media.blubrry.com/homeshow/p/homeshowradio.com/wp-content/uploads/2018/09/AskTom-Leo-Vent-Water-180805.mp3

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Tom: Well, it’s probably running colder, which I don’t see a problem with that at all, I’m sorry. I like that cold air coming into my house. So that’s good. But as far as that goes, what you do is you can pull the register off the ceiling. No, don’t pull it off, take the screws and take it off. I’m sorry it’s how I use words-

Charlie: Yeah. Go all incredible hulk on that thing. Exactly right.

Tom: I can just see some guy hanging from it.

Charlie: Call David Banner to get that thing down for you. Exactly.

Tom: Okay, and if there’s a gap between the box and the back of the sheet rock in the attic, you can caulk it. That would be step one. And then put the register back. If it continues, then if you want to get in your attic and insulate more around it. Maybe the insulation has pulled away. That will help also, or the last case is change it from metal to a plastic register, and it probably won’t drip.

Charlie: So, the problem here is that warm air is hitting the cold air from-

Tom: Yeah, you got a beer can with nice beautiful cold air on your new air conditioning system going through it and you don’t have a koozie.

More HomeShow Videos:

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Tagged With: Air Conditioning, registers, vents, water dripping

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