2,400+ Definitions
HVAC GLOSSARY
Every HVAC term, acronym, and industry phrase — defined in plain English.
Low Pressure Category
The Low Pressure Category includes HVAC systems and large appliances…
Low Pressure Switch
A Low Pressure Switch (LPS) is a safety device installed…
Low Refrigerant
Low refrigerant indicates the system contains less than the manufacturer-specified…
Low Temperature Cascade
The low temperature cascade stage is the coldest circuit in…
Low Velocity Duct
A low velocity duct is an HVAC ductwork system designed…
Low VOC Adhesive
Low VOC adhesive contains fewer than 100 grams per liter…
Low VOC Paint
Low VOC paint contains fewer than 50 grams per liter…
Lower Room UVGI
Lower room UVGI refers to ultraviolet germicidal irradiation (UVGI) systems…