Refrigerants Overview : Common Refrigerants

 R22:

  • Status: Banned for future import and production in the U.S. due to high global warming and ozone depletion potential.

  • Composition: Contains chlorine (HCFC).

  • Use: Previously the most common refrigerant, still found in older systems.

  • Class: A1 (low flammability, low toxicity, occupational limit 1000 PPM).

  • Environmental Impact: GWP over 1700, ODP 0.05.

  • Lubrication: Uses mineral oil for lubrication.

R410A:

  • Status: Most common refrigerant today, but may be phased out due to high GWP.

  • Composition: HFC (no chlorine, low ozone impact).

  • Class: A1 (low flammability, low toxicity, occupational limit 1000 PPM).

  • Environmental Impact: GWP over 1900, ODP 0.

  • Lubrication: Uses synthetic lubricants.

Future Outlook: Both R22 and R410A are being phased out, with environmentally friendly alternatives expected to replace them.


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