Heat Pump 101

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Recovering refrigerant from a heat pump

  • Get a recovery tank [1]
  • Pump it down to 250 microns [2]. It will not collapse under air pressure. It is E-4 order of 1 atmosphere.
  • This is a good one - Heat Pump University - [3]. Invite this Mister to teach at OSE.


  • Adding refrigerant, and diagnosing superheat, subcool at end [4]