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    HVAC/R Toolkit

    PT Chart Lookup

    Pick a refrigerant and temperature; get bubble + dew point pressures from NIST-traceable thermodynamic data.

    PT Chart Lookup

    Interpolated pressure–temperature chart for 25 refrigerants. Enter a temperature to get bubble-point and dew-point pressures in psig.

    Refrigerant
    Saturation Temperature
    °F
    Bubble-Point Pressure
    11.0psig
    Liquid saturation — use for liquid line / charging
    Dew-Point Pressure
    11.0psig
    Vapor saturation — use for superheat reference