Guides A-Z

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

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

Guide describing approaches to burying and encapsulating ducts in unconditioned attics to increase the overall R-value of duct insulation.

Guide describing ways to use landscaping to keep a home cooler.

No outdoor air intakes connected to return side of the HVAC system, unless controls are installed to operate intermittently & automatically based on a timer and to restrict intake when not in use (e.g., motorized damper)

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 install ventilation air inlets in open locations at a safe distance from potential air contamination sources.

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

This guide describes how to install a whole-building ventilation system to provide adequate dilution of indoor air contaminants.