Guides A-Z

Guide describing the use of building cavities as supply or return ducts.

Guide describing design and installation of compact duct systems for central heating and cooling systems.

This guides describes buried ducts in loose-fill attic insulation, a method that can only be used in dry climates.

This guide describes approaches to buryng and encapsulating ducts in unconditioned attics to increase the overall R-value of duct insulation.

Guide describing how to hang ducts with supporting straps or saddles to adequately support ducts so they do not sag and are not pinched or compressed in a manner that would cause damage to the ducts, the duct insulation, or the duct air barrier covering.

Guide describing a method for insulating an unvented attic by spraying foam insulation along the underside of the roof deck.