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    1coolreg's Avatar
    1coolreg Posts: 1, Reputation: 1
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    #1

    Jul 25, 2012, 08:13 AM
    How much condensation does air conditioning ductwork produce
    What would cause more condensation in the crawl space under a house, clothes dryer vented under floor or a/c ductwork?
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
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    #2

    Jul 25, 2012, 08:31 AM
    The air conditioner. Dry exhaust duct would be hot and would not cause condensation.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    Jul 25, 2012, 11:46 AM
    Quote Originally Posted by 1coolreg View Post
    What would cause more condensation in the crawl space under a house, clothes dryer vented under floor or a/c ductwork?
    The dryer since it is driving about 2.5 gallons of water/moisture out of the cloths per load and placing it directly into the crawl space. By the way Cloths dryers are not allowed to be vented into the crawl space by code.

    Note furnace duct work will not cause condensation UNLESS the A/C is running and the metal duct is uninsulated. If you insulate the duct properly the condensation problem in A/C mode goes away or if you use insulated flex duct to start with there is no condensation.
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
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    #4

    Jul 25, 2012, 12:15 PM
    For clarification, is dryer vented into crawl space or through crawl space to outside?
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #5

    Jul 25, 2012, 04:39 PM
    I think the're both right. Cooler air can't hold as much moisture as warm air, Like when a cold front hits warm moist air, the cold air drops what it can't hold(rain).
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