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R434A (RS-45)

R434A (RS-45) is a HFC blend, used as a replacement for R22 in low, medium and high temperature refrigeration applications. With a Global Warming Potential (GWP) of 3238 R434A (RS-45) is coming under scrutiny.

Packaging information







  • Available from A‑Gas wholesale partners. Use the ‘Find a supplier’ box to the right for further details
  • 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 Refrigeration

Industrial Refrigeration

Commercial Air Conditioning

Industrial Air Conditioning


*Flooded systems down to -35oC

Product Features & Benefits

  • GWP: 3238
  • Substitute for R22
  • Zeotropic refrigerant blend containing R125, R143a, R134a and Isobutane
  • 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, however polyolester is preferred, contact the compressor manufacturer for more information
  • Effective in low, medium and high temperature applications
  • Considerably lower discharge temperature than R22
  • Similar mass flow rate to R404A
  • The information contained within this website is for guidance only, for further system specific advice please call A‑Gas directly