Why is moisture running out of duct work in attic?

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Why is moisture running out of duct work in attic?

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basically your ductwork is doing the same thing a cold glass of iced tea does sitting on a table outside in the summertime. Water is condensing on the outside of the duct, because the air moving through the duct is much colder than the air in the attic. This normally happens in the summertime, when the air conditioning is blowing cold air through the ductwork, and the air in the attic is hot. So basically, to get this to happen in the winter time, two things have to be wrong at the same time. 1. the insulators have possibly covered up vents in your attic that keep outside air circulating through your attic space. Heat is radiating up through the ceiling into the attic, and is getting trapped up there. 2. cold air is moving through your ductwork. This can happen through convection, or through negative pressurization. check to see if you can feel air being drawn through the return in the house while the fan is off. The easiest way is to hold a piece of paper next to the return and see if

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