Key HVAC full forms
In daily HVAC practice, technicians use many abbreviations that can confuse beginners and even young engineers. This article explains the most important HVAC abbreviations and their correct full forms, including HVAC, AHU, FCU, PAC, BTU, PSI, TR, VAV, VRV, VRF, RPM, DC, DB and ACB, with practical notes for real projects.