R-421A
For R-421A, trade name(s) is Choice R-421A; retrofit / new is R/N; ashrae safety class is A1; gwp is 2,630; listing status / notes is Acceptable, verified against its source on 2026-08-11.
- Refrigerant
- R-421A verified
- Trade name(s)
- Choice R-421A verified
- Retrofit / new
- R/N verified
- ASHRAE safety class
- A1 verified
- GWP
- 2,630 verified
- Listing status / notes
- Acceptable verified
What the source says
R-421A | Choice R-421A | R/N | 0 | 2,630 | A1 | <https://www.govinfo.gov/content/pkg/FR-2006-09-28/pdf/E6-15833.pdf> September 28, 2006 (pdf) (183 KB) | Acceptable |
— epa.gov, retrieved 2026-08-11
Source
- epa.govhttps://epa.gov/snap/substitutes-residential-and-light-commercial-air-conditioning-and-heat-pumps