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Old 01-29-2012, 03:50 PM   #1
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Water in air ducts


Under my house the air ducts has water in the majority of them. How did that happen? Can anyone explain this to me and what should I do?

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Old 01-29-2012, 03:55 PM   #2
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Water in air ducts


If no one pored water in from above there likly full of condinsation.
Is this a crawl space or basement?
Are they insulated?
Is there a vaper barrier on the ground under the house.
Where is the air exchanger? If it's also under the house make sure the drain pans drainline is not plugged up.

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Old 01-29-2012, 03:58 PM   #3
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Water in air ducts


How did you discover the water?

Are the ducts are in a concrete slab or are they suspended from the ceiling? One points to a foundation leak where as the other one is probably plumbing related.

I am assuming these ducts are within the buildings heating envelope!

Last edited by how; 01-29-2012 at 04:00 PM.
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Old 01-29-2012, 04:03 PM   #4
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Water in air ducts


i think you caught him off guard dude.
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Old 01-29-2012, 04:07 PM   #5
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Water in air ducts


uninsulated duct with a humidifier on the heating system ....first time happening?
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Old 01-29-2012, 04:15 PM   #6
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Water in air ducts


Hey HVAC5646
I would like to take this opportunity to thank any neighbours with big wallets who may be contributing to the general warming of my neighbourhood. Some of them have snow free areas around their homes while others with un insulated in floor heating raise the ground water temp for everyone.
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Old 01-29-2012, 04:16 PM   #7
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Water in air ducts


water table too high in your area and your ducts have cracked or separated allowing ground water into them. This would be true of a house built with ducts in the slab foundation. Some older homes had clay tile for ducts. The best thing to do is get a small submersible pump to remove the water. The best place for this is the plenum.

Little Giant 1-ABS pumps work great for that type of application.
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Old 01-29-2012, 04:21 PM   #8
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Water in air ducts


Doesn't that lend to mold breeding in them later and Legionnaires disease. I mean how do they solve that problem permanently and clean them so mold does not grow in them once they are wet? Or do they?
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Old 01-29-2012, 04:26 PM   #9
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Water in air ducts


The way that they are repaired in my area if in a ranch home is to seal the in floor duct work with concrete and move all HVAC to the attic. Big job, but only real solution.
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Old 01-29-2012, 04:39 PM   #10
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Water in air ducts


Ouch, that has got to hurt the pocketbook but better than getting some lung ailment/disease.
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Old 01-29-2012, 04:52 PM   #11
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Water in air ducts


Quote:
Originally Posted by how View Post
Hey HVAC5646
I would like to take this opportunity to thank any neighbours with big wallets who may be contributing to the general warming of my neighbourhood. Some of them have snow free areas around their homes while others with un insulated in floor heating raise the ground water temp for everyone.
i don't speak Canadian
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Old 01-29-2012, 09:10 PM   #12
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Water in air ducts


Its a crawl space and I don't have the vapor barrier. I was under the house changing the light bulb and I noticed the ducts where droopy. So when I tried to push it up, I could hear the water inside of it. I spoke with a friend and he said I should replace them with the R-8. I currently have R-6, but I donn't think thats the problem. Its a single family home, built in 1993. I've been here since 1999.
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Old 01-29-2012, 09:13 PM   #13
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Water in air ducts


yes this is the first time.
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Old 01-29-2012, 09:19 PM   #14
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Water in air ducts


Its a crawl space, when you asked if they are insulated do you mean on the inside? Because I poked a hole in one of the ducts and it had pink insulation in it. No, I don't have the vapor Barrier and I assume that big grey thing under my house is the air exchanger.
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Old 01-29-2012, 09:21 PM   #15
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Water in air ducts


I was replacing the light bulb in the crawl space and I saw the air ducts drooping down a little. So when I tried to push it up, I could hear the water in it.

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