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Guide describing how to select and install whole-house ventilation systems for existing homes.

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 the use of building cavities as supply or return ducts.

Guide describing how to install jump ducts in bedroom walls to balance air pressures between rooms, enabling constant air flow for conditioning and freshness even when room doors are closed.

Guide describing how to air seal and insulate flex ducts.

Guide describing the repair and reconfiguration of the air handler closet and platform when replacing the air handler.

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 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 air seal and insulate metal ducts.

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

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 kinks or sharp bends.

Guide describing options for adding dehumidification equipment to a home to maintain indoor relative humidity below 60%.

Guide describing how to install a corrosion-resistant drain pan in condensate-producing HVAC equipment.

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

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

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

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

Guide describing how to create a designated shelter-from-heat space in a home to help occupants successfully weather an extreme heat event.

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

Guide describing categories of direct-vent combustion space- and water-heating equipment and combustion safety testing.

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 condensing boilers and hot water heat distribution systems used for home heating.

This guide describes evaporative cooling technologies which can be used to cool homes in dry climates.

Guide describing combustion furnaces with selection and installation guidance.

Guide describing gas-fired boilers and hot water heat distribution systems used for home heating.