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

Guide describing how to air seal and insulate metal ducts.

Guide describing design and installation of compact duct systems for central heating and cooling systems.

Guide describing how and where to install ducts, to ensure enough cavity space to avoid compression of the flex ducts or duct insulation.

Guide describing how to hang HVAC ducts with supporting straps or saddles to adequately support ducts so they do not sag and are not pinched or compressed.

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

Guide describing ductless heat pump systems used for single-room or whole-house heating and cooling.

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