Guide describing how to install ducted returns in bedroom walls to balance air pressures between rooms and to enable stale air to return to a central heating system's air handler for reconditioning even when room doors are closed.
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 providing information about ground-source (geothermal) heat pumps including an overview of technology and guidance on compliance and installation.
Guide describing how to install jump ducts in bedroom walls to balance air pressures between rooms and to enable stale air to return to a central heating system's air handler for reconditioning even when room doors are closed.
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 describing removal of construction debris from flex ducts and protection of ducts and HVAC equipment during construction to keep them free of dust and debris.
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.