2,400+ Definitions
HVAC GLOSSARY
Every HVAC term, acronym, and industry phrase — defined in plain English.
Duct Sizing
Duct sizing is the process of calculating appropriate ductwork dimensions…
Duct System Design
Duct System Design involves sizing and routing air distribution pathways…
Duct Tee
A duct tee is a T-shaped fitting used in HVAC…
Duct Transition
A duct transition is a fabricated fitting within an HVAC…
Duct Velocity
Duct velocity is the speed at which air moves through…
Ductless Installation
A ductless installation involves mounting an indoor wall unit connected…
Ductwork
Ductwork is the network of metal, fiberglass, or flexible conduit…
DX Coil
A DX coil, or direct expansion coil, is a cooling…
Dynamic Glass
Dynamic glass is responsive glazing technology that automatically adjusts light…