Refrigerant Superheat & Subcooling Calculator

Calculate superheat and subcooling from measured pressures and temperatures for system diagnosis.

Measured suction line pressure.
psig
Measured suction line temperature.
°F
Measured liquid line pressure.
psig
Measured liquid line temperature.
°F
Saturation temperature at suction pressure (from PT chart).
°F
Saturation temperature at liquid pressure (from PT chart).
°F

Results

Superheat-°F
Subcooling-°F
Superheat Status-
Subcooling Status-
References: ASHRAE Handbook—Refrigeration; RSES Service Application Manual; EPA 608