Calculate subcooling accurately in HVAC systems using our Subcooling Calculator. Input pressure and temperature to obtain precise subcooling.. Let's calculate R-134A subcooling: Subcooling (R-134A) = 88°F - 82°F = 6°F. We see that in this system, we have 6°F R-134A subcooling. With this subcooling formula and calculator, you can pretty much calculate subcooling for any refrigerant. The R-22, R-410A, and R-134A subcooling calculation examples are here to help you out.
HVAC App to Calculate Subcooling. Our Pressure Temperature Chart for the selected refrigerant is available for quick access; just use the button labeled (P/T).. Use the refrigerant drop down for access to over 100 refrigerants.. Plus and minus buttons add and subtract values in intervals of 1 to their related input fields.. At the liquid line service line, located after the condenser coil, we measure the temperature of 92°F. How much is subcooling? Here's the calculation. Subcooling = 100°F - 92°F = 8°F. The calculation itself is the easy part. The harder part is how to measure the needed refrigerant temperatures for superheat and subcooling calculation.