Duct Disconnected In Attic

The mold might be an issue.

Duct disconnected in attic. Top it with the foil tape for a good seal. Ted has more than a few cobwebs in his attic. Disconnected or leaking ducts. Before adding blown insulation inspect and test the ducts for missing or torn duct insulation.

Use the foil tape instead. The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago. We found that the ducts had become disconnected in the attic crawl space where the air handler was placed. Or excess flex duct.

If an exhaust duct is disconnected all the warm humid air from the house is pumped directly into the attic. It is very important for the warm moist air to be exhausted outside not into the attic. Disconnected cool air supply duct hidden in crawl area. This moisture condenses on the cool roof sheathing and eventually causes mold growth and sheathing failure.

Duct tape is a lousy choice for ducts despite it s name. In existing homes with vented attics and hvac ducts that are installed on the attic floor bury ducts in blown attic insulation when adding or increasing attic insulation. Disconnected broken and improperly installed ducts are a major cause of sheathing degradation and mold growth. Since burying ducts is simply one of several ways to address the energy waste associated with the decision to locate ducts in a vented unconditioned attic it s worth taking a fresh look at all of the possible solutions to the attic duct problem.

The unconditioned space also houses his hvac system. The reason is straightforward. Yes you can use a zip tie or large hose clamp to attach the hose to vent.