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R438A (Freon™/Isceon® MO99)

R438A (Freon™/Isceon MO99) is a HFC blend, used as a replacement for R22 in domestic, industrial and commercial air-conditioning systems. It is also a retrofit replacement for R22 in low and medium-temperature refrigeration systems and DX chiller systems. The manufacturer of the refrigerant recommends the use of the product in the following applications: commercial air conditioning, roof top units, indoor packaged units, DX chillers, split systems, residential air conditioning, refrigeration (low and medium temperature). 

Packaging Information





  • Available from A‑Gas wholesale partners - find a supplier 
  • A‑Gas product cylinders are fitted with a Residual Pressure Device (RPD) to ensure used refrigerant or any other substance cannot be reintroduced into a cylinder
  • Store cylinders in a cool, dry, well-ventilated area, out of direct sunlight
  • A‑Gas operates a returnable cylinder fleet - empty cylinders are to be returned to an A‑Gas wholesale partner
  • For alternative or larger package sizes please contact A-Gas on 1800 002 427 or via the Contact Us form


Commercial Air Conditioning

Industrial Air Conditioning

Domestic Air Conditioning

Product Features & Benefits

  • GWP: 2252
  • Substitute for R22
  • Zeotropic refrigerant blend containing R32, R125, R134a, butane and isopentane
  • Refrigerant must be charged from the liquid phase to ensure accurate composition
  • A‑Gas refrigerant cylinders have dual port valves, making liquid offtake easier
  • Non-flammable with a safety classification of A1
  • Compressors can be charged with most current oils but polyolester oil is preferred - contact the compressor manufacturer for more information
  • Lowest Global Warming Potential (GWP) of Isceon range
  • The information contained within this website is for guidance only - for further system-specific advice please contact us directly