Condensation In Attic Ductwork In Winter

If the attic is foam sealed with no leakage to the outside that would work.

Condensation in attic ductwork in winter. No the radiant barrier will not solve the condensation issue. However an attic in pensacola florida is likely to have a humidity level closer to 100 and the risk of condensation on ductwork would then go up quite a bit. But at a premium cost. It can also feed mold growth and cause ceiling joists to rot and sheetrock to disintegrate leading to unhealthy air quality in your home and the need for costly structural repairs.

The house air with its moisture rises into the ducts cools and condenses the moisture cool air sinks and is replaced with more warm moist air from inside the house. Without seeing your duct attic situation one can only speculate but ducts touching each other lying on or in insulation in our climate. Over time condensation dripping from your ductwork onto attic insulation can cause it to compress which lowers its r value. Even though the ducts are insulated and my attic is over insulated the air and surfaces inside the ducts will get very cold if the hvac is left off.

When outside temperatures drop down below about 40 pretty much nov thru march condensation starts forming in the ducts and drips from some of the ceiling registers. But i notcied that the condensation only formed when the outside temps fell below about 20 degrees. Condensation problem in the ductwork in wintertime question i have a dedicated ductwork system with the air handler in unconditioned attic. Think about it condensation on ductwork probably isn t a big problem in phoenix arizona but why.