R-457A
For R-457A, trade name(s) is Forane® 457A; retrofit / new is N; ashrae safety class is A2L; gwp is 140; listing status / notes is Acceptable with Use Conditions: See rule for detailed conditions, verified against its source on 2026-08-11.
- Refrigerant
- R-457A verified
- Trade name(s)
- Forane® 457A verified
- Retrofit / new
- N verified
- ASHRAE safety class
- A2L verified
- GWP
- 140 verified
- Listing status / notes
- Acceptable with Use Conditions: See rule for detailed conditions. verified
What the source says
R-457A | Forane® 457A | N | 0 | 140 | A2L | <https://www.govinfo.gov/content/pkg/FR-2021-05-06/pdf/2021-08968.pdf> May 6, 2021 (pdf) (583 KB) | Acceptable with Use Conditions: See rule for detailed conditions. |
— epa.gov, retrieved 2026-08-11
What federalregister.gov says
Using these safety groups, HFO-1234ze(E), HFC-32 and the refrigerant blends R-452B, R-454A, R-454B, R-454C, R-457A, and R-516A are in the A2L Safety Group, while R-290, R-441A, and the components of HCR 4141 are in the A3 Safety Group.
— federalregister.gov, retrieved 2026-08-11
Sources
- epa.govhttps://epa.gov/snap/substitutes-residential-and-light-commercial-air-conditioning-and-heat-pumps
- federalregister.govhttps://www.federalregister.gov/documents/2025/11/10/2025-19812/protection-of-stratospheric-ozone-listing-of-substitutes-under-the-significant-new-alternatives