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Thread: R21 Verses R22

  1. 05-06-2007, 03:39 AM #1
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    R21 Verses R22



    What I Need To Know Is Can R21 Refrigerant Be Used In A System Requiring R22?


  2. 12-07-2007, 01:33 AM #2
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    theboss
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    Re: R21 Verses R22

    in short..NO
  3. 13-07-2007, 02:32 PM #3
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    pendlesteve
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    Re: R21 Verses R22

    Just remember if it has an R number then all the digits that follow must be the same.
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