Guides A-Z

Guide describing how to install a bathroom exhaust fan to remove excess moisture.

Guide describing how to install continuously operating exhaust fans.

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

Guide describing the use of electronically commutated motors (ECMs) in HVAC central air handler fans to reduce power consumption compared to a single-stage fan motor.

Guide describing how to provide combustion air for fireplaces and how to test fireplaces for combustion safety.

Guide describing how to install obvious ventilation controls.

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 air seal and insulate flex ducts.

Guide describing the use and testing of programmable thermostats.

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

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

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