How To Install Return Air Duct In Attic

Locate where you want your return air ducts. In this tutorial i am happy to show you how to properly install flexible duct to a register can for all you heating air conditioning ventilation do it your. The remaining 2 tons of capacity is at least 1 5x oversized for the actual 1 load.

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Go into the basement and locate the holes.

How to install return air duct in attic.

The damper control indicator will show you whether the damper is open or closed. As difficult to achieve as getting hvac companies to actually train their workers how to install ducts. If testing of ducts returns was code this would be a step in the right direction. Attach a second air duct to the first by peeling back the insulation and tucking it into the first section approximately 6 10 and seal with duct tape.

As long as there s an unobstructed path e g no door that can be closed the upstairs doesn t need a dedicated return. You ll need to find a corner such as in a closet to build a duct chase to get ducts from basement to attic. Next areas to address are oversized supply box pentrations supply boxes that lift off the attic floor when supply grill is installed and return air leakage. Remove existing ductwork where needed.

That s right your heating and air system is nothing more than a big circulation unit. How to install a return air duct. Cut a hole low in the drywall where you want to put your return air grille. In more cases than not a 3 ton ac with the ducts in the attic has a ton or so of load that s just from the location of the ducts in the attic and the associated duct gains leakage etc.

Put the crimped end in first then put the other end of the duct in. The takeoff rotates to make it easier to fit the duct into place. Size the hole. A return duct is the part of the system that carries the air back to the furnace or air handler where it will then be circulated back out through the supply vents.

Install the damper into the duct by drilling a hole into the side of the duct and then screw the damper into place. You ll also need to provide a return path from a basement air handler or main level return to the second floor. If the air duct isn t long enough it is possible to add extra length. Run the new flexible air duct under the house from the floor return to the underside of the air handler and attach to the metal vent box or plenum image 1.

Work from the farthest hole back and install return air panning back.

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