Duct Work Runs Through Attic

Smooth rigid ducts with tape or mastic around all joints will prevent air leakage.

Duct work runs through attic. You re trying to get warm air to a room and the duct is running through the coldest part of the house. It also makes maintenance and or modification easier. Unfortunately this practice is all too common in our northern cold climate putting air conditioning ducts in the hottest. If those dampers can t be accessed from below you ll want to install them close enough to the register so that you can reach them through the register opening.

The attic ductwork is flex duct work. In last week s blog i discussed the practice of burying attic ducts in deep insulation 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. Install dampers at the registers to adjust airflow. It was new when the ac was put in 7 years ago.

I called out the original hvac company and they took a look and said they saw no water. It s done this way because it s easier and cheaper to run a flex duct through a wide open space than to fit it through and around floor and wall framing. Each register should have its own damper that can be accessed for adjustment. Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water.

In warm climates it is common practice to run heating and air conditioning ducting through attic spaces simply because it is easy to do. Can i put a vent in the ceiling of the bedroom or must it be in the wall baseboard. We re talking 20 feet max through the floors into the attic and another 20 feet across the attic into the bed room. Adding heat runs in a basement may change the airflow in the ductwork going to other rooms.

The international residential code allows you to run a dryer vent through the attic but you can t terminate it there. Foam tubing or fiberglass will work but it s also possible to buy pre insulated 4 duct. Doing so would fill your attic with warm moist air that could rot the. Always insulate the duct to prevent condensation problems as the warm air will be potentially running through cold ductwork.