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Thread: 407c??

  1. #1
    Join Date
    Apr 2017
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    Green tech guy.
    Supply company telling me you can add this on top of r-22, but most techs say it's a retrofit, any suggestions?

    Sent from my iPhone using Tapatalk

  2. #2
    Join Date
    Apr 2005
    Australia : Queensland
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    Can be added with no TXV adjustment.

    Here is another post that looks into this further.
    The primary function of the design engineer is to make things difficult for the fabricator and impossible for the serviceman.

  3. Likes Jettinvr6sc, weezer81 liked this post.
  4. #3
    Join Date
    Nov 2006
    Athens, Ohio
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    Positively not! You seem to be saying that you will mix the refrigerants.
    The old refrigerant must be recovered and replaced with the new refrigerant.
    ********* High efficiency equipment alone does not provide home comfort and efficiency. HVAC2.0 is a process for finding the real needs of the house and the occupants. Offer the customer a menu of work to address their problems and give them a probability of success.

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  5. Likes Gunslinger, weezer81 liked this post.

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