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.
If you had no return air in your room you would create a positive pressure.
An attic is a space not a structural component the space cannot support anything but air.
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.
That would then reduce the flow of conditioned air to that space.
When you place a furnace in the attic to take advantage of its.
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.
A furnace in the attic is a design that works for all homes.
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Insulating the plenum on a forced air system.
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.
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.
A return air plenum is the ducting that is attached to a furnace for that return air to flow through and is used as a central manifold for other return air ducting.
For the system to work you have to re circulate the air back to the furnace.
Watch as a pro quickly assembles the return air plenum and shows you how to do the same.