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427a

  1. Commercial HVAC Forum
    Just looking for everyone's take on which one has worked better for you. R22 is moving toward $500 a can and there's just to much R22 equipment out there.
  2. Commercial HVAC Forum
    Looking for a refrigerant that does not contain propane that will also work well in residential a/c and heatpumps. Has anyone used this and do you have to change out the oil they claim no components need to be changed. Mineral oil and alkylbenzene are often acceptable with R-427A if the system...
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