Condensation In Attic Ductwork In Winter

No the radiant barrier will not solve the condensation issue.

Condensation in attic ductwork in winter.

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

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. Another condensation problem occurs in cold climates in the winter with ac ducts in the attic and a different heating system. 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.

Over time condensation dripping from your ductwork onto attic insulation can cause it to compress which lowers its r value. Without seeing your duct attic situation one can only speculate but ducts touching each other lying on or in insulation in our climate. When the warm air rising from the first floor gets into the duct inlets a lot of condensation forms. Condensation problem in the ductwork in wintertime question i have a dedicated ductwork system with the air handler in unconditioned attic.