HVAC -

Ducts

Guide describing how to air-seal duct and flue shafts.

Guide describing buried ducts in loose-fill attic insulation, a method that can only be used in dry climates.

Guide describing how to air seal around duct shafts and flues installed through ceilings, walls and flooring in new and existing homes.

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.