R-454B

R-454B, also known by the trademarked names Opteon XL41, Solstice 454B, and Puron Advance, is a zeotropic blend of 68.9 percent difluoromethane (R-32), a hydrofluorocarbon, and 31.1 percent 2,3,3,3-tetrafluoropropene (R-1234yf), a hydrofluoroolefin.[1] Because of its reduced global warming potential (GWP), R-454B is intended to be an alternative to refrigerant R-410A in new equipment.[2][3][4] R-454B has a GWP of 466, which is 78 percent lower than R-410A's GWP of 2088.[2]

R-454B is non-toxic and mildly flammable, with an ASHRAE safety classification of A2L. In the United States, it is expected to be packaged in a container that is red or has a red band on the shoulder or top.[2][5][6]

  1. ^ "ASHRAE Refrigerant Designations". Retrieved June 27, 2021.
  2. ^ a b c "Opteon XL41 product information". Retrieved June 27, 2021.
  3. ^ "Solstice 454B product information". Retrieved June 27, 2021.
  4. ^ "Carrier Introduces Puron Advance" (Press release). December 19, 2018.
  5. ^ "Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program". Federal Register. 86 (86). United States Environmental Protection Agency: 24444–24474. May 6, 2021.
  6. ^ "AHRI Guideline N: 2017 Guideline for Assignment of Refrigerant Container Colors" (PDF). Retrieved June 27, 2021.