Heating, ventilation, and air conditioning (HVAC) is the innovation of indoor and vehicular natural solace. Its will probably give warm solace and adequate indoor air quality. Central air framework configuration is a subdiscipline of mechanical building, in view of the standards of thermodynamics, liquid mechanics and warmth move. "Refrigeration" is now and then added to the field's shortened form, as HVAC&R or HVACR or "ventilation" is dropped, as in HACR (as in the assignment of HACR-appraised circuit breakers).

AHU System

Ductable AC