Blown Insulation for Existing Vented Attic Description Guide describing how to insulate a vented attic in an existing home using blown insulation added to the attic floor.
Ducts Buried in Attic Insulation and Encapsulated Description Guide describing approaches to burying and encapsulating ducts in unconditioned attics to increase the overall R-value of duct insulation.
Ductless (Mini-Split) Heat Pumps Description Guide describing ductless heat pump systems used for single-room or whole-house heating and cooling.
Compact Air Distribution Description Guide describing design and installation of compact duct systems for central heating and cooling systems.
Pre-Retrofit Assessment of Existing HVAC Systems Description Information guide describing considerations for before retrofitting HVAC systems, retrofit scope considerations, and HVAC system replacement options.