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

Guide describing how to install jump ducts in bedroom walls to balance air pressures between rooms, enabling stale air to return of the central air handler, even when room doors are closed.

Guide describing the use of ducted returns to return stale air from bedrooms and bathrooms to a central heating system.

Guide describing method for designing and installing ducts in a raised ceiling chase.

Guide describing method for installing ducts in a duct chase in a dropped ceiling.

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

Guide for designing and installing interior ducts in an interstitial floor cavity in new and existing homes.

Guide describing how to correctly install flex ducts without kinks or sharp bends.

Guide describing the use of building cavities as supply or return ducts.

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 attic, basement, or crawl space.

Guide describing the use of building cavities as supply or return ducts.

Guide describing how to conduct duct leakage tests per RESNET protocols on all components of the HVAC system (including the air handler, ductwork, register boxes/boots, and all air devices such as diffusers, registers, or grilles).

Guide describing how to thoroughly seal HVAC ducts to ensure air delivery without leakage, and to ensure economical and quiet performance of the HVAC system.

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.