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Question for you HVAC experts

OK, I need the hive to figure this out.

I had all the metal duct in my house replaced a month ago. It ran through the crawl space under the house. It was from the 70s, has asbestos in it, so I decided to have it all replaced.

It was replaced with insulated flex duct, and they hung it from the top of the crawl space.

I was under the house yesterday(cause that's where i bury bodies LOL) and I noticed a bulge in one of the flex ducts. I also noticed it was sitting on the ground itself of being suspended from the top of the crawl space.

Well, it fell due to weight...Not kidding, but it must have had 10 gallons of water in it. I looked at another one that had not fallen but had a less amount of water in it. So two sections of flex duct had water in them. A lot of water.

Where the heck is this water coming from? This isn't near anything that could be a leak to my knowledge. Is this condensation being pulled out of air by the AC, and not drained properly or something else?

Mucho gracias hive...

Posted: 09/12/2019 at 3:48PM

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Current Thread:

Question for you HVAC experts -- MrBayAreaHokie 09/12/2019 3:48PM

He noticed a bulge..... ** -- turkeywinghokie 09/12/2019 4:19PM

Here you go. Read response #6 -- Stork 09/12/2019 4:19PM

Thank you Stork ** -- MrBayAreaHokie 09/12/2019 4:28PM

That probably makes more sense than my explanation... -- MP4VT2004 09/12/2019 4:25PM

I've dealt with engineer reports involving moisture in crawlspaces and I'm -- Stork 09/12/2019 4:27PM

Unless its a conditioned crawl space. -- HokieR 09/12/2019 6:29PM

Same here. I love mine.** -- 48zip 09/12/2019 8:43PM

Are you sure they're insulated flex ducts? Hot, humid crawlspace vs cold -- Stork 09/12/2019 4:11PM

Def insulated....i have seen the pink -- MrBayAreaHokie 09/12/2019 4:19PM

Is the duct insulated or the underside of the subfloor? ** -- Stork 09/12/2019 4:20PM

It's insulated duct. silver on the outside, pink on the inside ** -- MrBayAreaHokie 09/12/2019 4:23PM

Mouse pee most likely ** -- Brown Water 09/12/2019 4:00PM

To me it sounds like condensation NOT being pulled out of the air properly. -- MP4VT2004 09/12/2019 3:57PM

Yes, the crawl space is very cool...it's like an old castle, probably 50F ** -- MrBayAreaHokie 09/12/2019 4:04PM

That would make sense...the crawl space temp. is probably cooler than... -- MP4VT2004 09/12/2019 4:11PM

Rock on MP4..thank you ** -- MrBayAreaHokie 09/12/2019 4:20PM

You're welcome! Good luck...hopefully it's something simple. ** -- MP4VT2004 09/12/2019 4:22PM