Plenum Truss: Get Your Ducting into a Conditioned Space
Placing notoriously leaky HVAC ductwork into an unconditioned space will not make for an energy efficient heating or cooling system.There are a few options which locate the ductwork within the thermal enclosure of the home. Options include moving the ceiling plane to the underside of the roof with an unvented attic or placing the ductwork in a conditioned basement. A third option is the installation of plenum trusses which allow for a compact ducting system to be placed in a conditioned bulkhead.