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Guides A-Z

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

Guide describing how to conduct duct leakage tests 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 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 describing how to upgrade or expand an existing HVAC system.

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

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

Guide describing how to air seal and insulate fiber board ducts.

Guide describing how to air seal and insulate flex ducts.

Guide describing how to air seal and insulate metal ducts.

This measure guide describes how to correctly install ducts, ensuring enough cavity space to avoid compression.

Guide describing how to hang ducts with supporting straps or saddles to adequately support ducts so they do not sag and are not pinched or compressed in a manner that would cause damage to the ducts, the duct insulation, or the duct air barrier covering.

Guide describing how to conduct duct leakage tests per RESNET protocols.

Guide describing how to install transfer grilles 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 undercut the doors  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.