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Guide describing how to insulate a vented attic in an existing home using blown insulation added to the attic floor.

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.

Guide describing proper installation of high-MERV furnace and air-handler filters.

Guide describing how to design HVAC systems to be located within the conditioned space of the home, either in a utility closet or in an air sealed conditioned attic, basement, or crawl space.

Guide outlining how to correctly install flex ducts without excessive coils or loops.

Guide describing refrigerant-based compression-cooling air conditioning systems for space cooling.