2,400+ Definitions
HVAC GLOSSARY
Every HVAC term, acronym, and industry phrase — defined in plain English.
Manual D
ACCA Manual D is the industry standard for residential duct…
Manual J
Manual J is the ACCA (Air Conditioning Contractors of America)…
Manual S
ACCA Manual S — Equipment Selection — is the companion…
MERV Rating
MERV (Minimum Efficiency Reporting Value) is the standard rating system…
Mini Split
A mini-split (also called a ductless mini-split or ductless heat…