Guides A-Z

Guide describing air sealing of the seams and holes in HVAC air handler and furnace cabinets.

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.

Guide that illustrates how and when to encapsulate ductwork in unconditioned attics, increases the R-value of duct insulation, mitigating condensation issues and reducing air leakage.

Guide describing how to air seal and insulate flex ducts.

Guide describing the types of whole-house fans, installation details to reduce energy loss, and how to operate them for comfort and energy savings based on climate zone.