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Tech Tip: Refrigerant Recovery Best Practices

Recovery is the removal of refrigerant from a system to either store and send in for recycling or to reintroduce back into the same system.

Here are a dozen top tips for refrigerant recovery:

  1. Make sure your tank is empty and evacuated to 300 microns if you plan to return the refrigerant back into the system.
  2. Never mix refrigerants.
  3. Purge hoses before recovery.
  4. Use a flare line drier on the inlet of the machine to increase the life of the machine and to filter and dry the refrigerant. These must be replaced regularly.
  5. When recovering into a tank using the standard method invert the tank and pump into the vapor port on the tank.
  6. Remove Schrader cores before recovery for faster recovery and a cooler tank.
  7. Use larger gauge hoses with no core depressors for faster recovery.
  8. Check Recovery machine inlet screens regularly and clean or replace as needed.
  9. If your tank becomes hot you can either place it in a bucket of water or run water over the tank.
  10. Do not leave refrigerant in your machine during storage. If your machine has a purge mode make sure to purge the refrigerant out of the condenser. (see the manufacturer’s specs on your machine).
  11. Most HVAC systems holding under 200 lbs. of refrigerant are not required to be pulled into a vacuum during recovery. See this chart from the EPA.
  12. Weigh the refrigerant out and do not fill the tank to more than 80% of the REFRIGERANT capacity, not just the water capacity.

Shop Ferguson’s Refrigerant Recovery Machines and Scales