How cold is the freon of  a central air conditioner?

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  • y
    Lv 7
    3 months ago

    The different refrigerants work at different pressures and temps. You want your refrigerant entering the evap at just above freezing, or you'll get icing, which screws up airflow and everything else.  That temp can be determined by pressure of said refrigerant.  One must account for the temps that particular system will be running in, and adjust pressure by charge, metering device, fan control, and such.  For 22, you are looking at right around 55lbs for that tipping point.

  • keerok
    Lv 7
    3 months ago

    Same as the one in you car's aircon. BTW, nobody uses Freon anymore.

  • Anonymous
    3 months ago

    The refrigerant has different temperatures in the system when the AC is running.  It is about 35 to 40 deg F at the air handler coils and about 65 deg F before it enters the compressor.

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