Ducting Systems and Air Ventilation - Odor coming from intake air vent

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CharlotteAnn
08-31-09, 12:46 PM
Our house is 20 years old and has a ductboard trunk line in the crawl space. At times I can smell this weird smell in the house, and I realized it was coming from the intake air vent (I guess that's what it's called, the vent where the air is sucked in.) when the AC isn't running. Just a stale, warm odor. We had the ductwork replaced, but not the trunk line. Help.

airman.1994
08-31-09, 02:33 PM
Smell is coming from the crawl, ductwork or the unit.