Condensation on Supply Air Ducts
Condensation on Supply Air Ducts
(OP)
Wondering if anyone can help, I have condensation on the supply air ducts in the space between the 2nd and 3rd floor of a townhouse. There is no return air on our heat pump unit, the heat pump is new (1 year old) and the condensation has rotted two layers of ceiling drywall. Should I used insulation on the duct and if so any recommendations on the type?
Thanks.
Thanks.





RE: Condensation on Supply Air Ducts
Also most curious is the lack of a return duct? Why did you mention that? Where do you live? Since you'll be opening up walls and ceilings to insulate, I'd really consider having return ductwork installed to reduce your energy bills.
RE: Condensation on Supply Air Ducts
Live in VA, no return air can make it warm here in the summers = cranking the heat pump to cool off the house=condensation on supply air duct, a bad cycle.
Thanks again
RE: Condensation on Supply Air Ducts
If you go with closed cell insulation material, you can reduce the moisture permission and you need not foil it. Any of the insulation manufacturers can do the calculation of insulation thickness with and without cladding and you can plan as per your budget.
For a clear idea go to,
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Regards,