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Acceptable Substitutes in Household Refrigerators and Freezers
Substitutes are reviewed on the basis of ozone depletion potential, global warming potential, toxicity, flammability, and exposure potential. Lists of acceptable and unacceptable substitutes are updated several times each year. A chronological list of SNAP updates is also available.
Unacceptable substitutesNote: SNAP-related information published in the Federal Register takes precedence over all information on this page.
Acceptable Substitutes for CFCs (class I ODS) in Household Refrigeration
| Substitute (Name Used in the Federal Register) | Trade Name | Refrigerant Being Replaced | Retrofit/ New |
|---|---|---|---|
| HCFC-22 | 12, 502 | R, N | |
| HFC-134a | 12 | R, N | |
| HFC-152a | 12 | N | |
| R-401A, R-401B | MP-39, MP-66 | 12 | R, N |
| R-402A, R-402B | HP-80, HP-81 | 502 | R, N |
| R-404A | HP-62 | 502 | R, N |
| R-406A | GHG | 12, 500 | R |
| R-409A (HCFC Blend Gamma) | 12 | R | |
| Free Zone (HCFC Blend Delta) | Free Zone / RB-276 | 12 | R, N |
| Freeze 12 | Freeze 12 | 12 | R, N |
| FRIGC FR-12 (HCFC Blend Beta) | FRIGC FR-12 | 12 | R, N |
| GHG-X4 | GHG-X4, Autofrost, Chill-it | 12, 500 | R, N |
| GHG-X5 | GHG-X5 | 12, 500 | R, N |
| GHG-HP (HCFC Blend Lambda) | GHG-HP | 12 | R, N |
| Hot Shot | Hot Shot, Kar Kool | 12, 500 | R, N |
| THR-01 | 12 | N | |
| THR-04 | 502 | R, N | |
| HCFC-22/HCFC-142b | 12 | R, N | |
| Ammonia Absorption | 12 | N | |
| Self-chilling cans using CO 2 | 12, 500, 502 | N | |
| Ikon B | 12 | N | |
| Ikon A | 12 | N | |
| THR-02 | 12 | N | |
| FOR12A | FOR12A | 12 | R, N |
| FOR12B | FOR12B | 12 | R, N |
| SP34E | SP34E | 12 | R, N |
| RS-24 (2002 formulation) | 12 | R, N | |
| R-407C | Suva 407C, Klea 407C | 502 | R, N |
| R-420A | Choice R-420A | 12, 500 | R, N |
| R-421B | Choice R421B | 12, 502 | R, N |
| R-426A | RS-24 | 12 | R, N |
| R-422C | ICOR XLT1 | 502 | R, N |
| R-428A | RS-52 | 502 | R, N |
| KDD6 | KDD6 | 12 | R, N |
Key: R = Retrofit Uses, N = New
Uses
Acceptable Substitutes for HCFC-22 (class II ODS) in Household Refrigeration
| Substitute (Name Used in the Federal Register) | Trade Name | Refrigerant Being Replaced | Retrofit/ New |
|---|---|---|---|
| R-410A, R-410B | AZ-20, Suva 9100, Puron | N | |
| R-407C | Suva 9000, Klea 66 | R, N | |
| Ammonia Absorption | N | ||
| THR-03 | N | ||
| ISCEON 59, NU-22, R-417A | ISCEON 59, NU-22 | R, N | |
| R-404A | HP62 | R, N | |
| R-507, R-507A | AZ-50 | R, N | |
| Self-chilling cans using CO 2 | R, N | ||
| RS-44 (2003 formulation) | 22 | R, N | |
| ISCEON 79 | ISCEON 79 | R, N | |
| R-421A | Choice R421A | 22 | R, N |
| R-421B | Choice R421B | 22 | R, N |
| R-422D | ISCEON MO29 | 22 | R, N |
| R-424A | RS-44 | 22 | R, N |
| R-426A | RS-24 | 22 | R, N |
| KDD5, R-438A | ISCEON, MO99 | 22 | R, N |
| R-434A | RS-45 | 22 | R, N |
| R-428A | RS-52 | 22, 22 blends including R-402A, -402B, -408A, AND -411B | R, N |
| R-125/290/134a/600a (55.0/1.0/42.5/1.5) | ICOR AT-22 | 22 | R, N |
| R-422B | XAC1, NU-22B | 22 | R, N |
| R-422C | XLT1 | 22 | R, N |
| R-427A | Forane 427A | 22 | R |
Key: R = Retrofit Uses, N = New
Uses