Attic Furnace No Return Plenum

Air handler platforms used as return air plenums can draw air from vented attics and crawlspaces through other connected framing cavities.

Attic furnace no return plenum.

That would then reduce the flow of conditioned air to that space. That is why you need a cold air return image 1. You might not receive the same air movement benefits if the unit is in a garage either. Ensure proper return air flow for your 17 5 ensure proper return air flow for your 17 5 in winchester residential electric furnace application with this easy to assemble return air box.

Watch as a pro quickly assembles the return air plenum and shows you how to do the same. If you had no return air in your room you would create a positive pressure. While none of these spaces makes an acceptable air pathway on its own some building cavities such as floor joists can make acceptable duct chases to contain an insulated air sealed metal or flex supply. A furnace in the attic is a design that works for all homes.

If the space is conditioned it no longer is an attic and needs to be called conditioned space wiring within an area used as a plenum has to be in conduit. The flexible design allows for connection of a new or existing side air return on either side based on the placement of the reinforced sheet metal panel of the return air box assembly. An attic is a space not a structural component the space cannot support anything but air. If you don t have a crawl space or a basement then it can be a challenge to place a furnace on the ground floor of the structure.

Insulating the plenum on a forced air system. For the system to work you have to re circulate the air back to the furnace.