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R424A (RS-44)

R424A (RS-44) is a HFC blend, used as a retrofit refrigerant for R22 in medium and high temperature air-conditioning and refrigeration systems.

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 01275376600 or via the Contact Us form


Commercial Air Conditioning

Commercial Refrigeration

Transport Refrigeration

Product Features & Benefits

  • GWP: 2440
  • Substitute for R22, with comparable physical and thermodynamic properties
  • Zeotropic refrigerant blend containing R125, R134a, isobutane, and butane 
  • 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
  • Generally compatible with mineral oil, however a conversion to polyolester oil may be required in certain circumstances - contact the compressor manufacturer for more information
  • Lower discharge temperatures compared to R22
  • The information contained within this website is for guidance only - for further system-specific advice please contact us directly