Guides A-Z

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

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 ground-source (geothermal) heat pumps including an overview of technology and guidance on compliance and installation.

Guide describing the split system heat pumps used for central forced air heating and cooling.

Guide describing condensing clothes dryers, which have a secondary heat exchanger and do not require exterior venting.