Supply Air Temperature Reset Calculator

Calculate optimal supply air temperature reset based on zone demand.

Supply air temp at design cooling conditions.
°F
Maximum SAT during reset (typically 65°F).
°F
Cooling demand of warmest zone (0-100%).
%
Demand below which reset occurs (typically 80-90%).
%

Results

Reset SAT Setpoint-°F
Estimated Energy Savings-%
Reset Active-
References: ASHRAE Handbook - HVAC Applications, Chapter 42. Supply air temperature reset for VAV systems and energy optimization.