Guide describing how to air seal and insulate metal ducts.

Guide describing how to air seal around duct shafts and flues installed through ceilings, walls, and flooring in new and existing homes.

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 a method for taking accurate measurements of airflow in mechanical ventilation ducts.

Guide describing how to conduct HVAC duct leakage tests for total system duct leakage per RESNET protocols.