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    HVAC/R Toolkit

    Superheat / Subcool Calculator

    Measure superheat and subcool from suction / liquid pressure and line temperature with in-range verdicts.

    Superheat / Subcooling Calculator

    Enter measured line pressure and temperature to calculate superheat or subcooling. Uses live PT chart interpolation for accurate saturation temperatures.

    Refrigerant
    Mode
    Suction Pressure
    psig
    Suction Line Temperature
    °F
    Superheat
    — °F
    Pressure Out of Table Range

    The entered pressure is outside the valid PT chart range for R-11. Check your gauge reading or select a different refrigerant.