2,400+ Definitions
HVAC GLOSSARY
Every HVAC term, acronym, and industry phrase — defined in plain English.
Heat Exchanger
The heat exchanger in a gas furnace is the component…
Heat Load
Heat load (also called heating load or heat loss) is…
Heat Pump
A heat pump is an HVAC system that moves heat…
HRV (Heat Recovery Ventilator)
A Heat Recovery Ventilator (HRV) provides controlled fresh air ventilation…
HSPF2
HSPF2 (Heating Seasonal Performance Factor 2) is the federal standard…
Humidifier (Whole-House)
A whole-house humidifier adds moisture to the air distributed through…