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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 Refrigerators and Freezers
| 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 CO2 | 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 |
Substitutes Acceptable Subject to Use Conditions for CFCs (class I ODS) in Household Refrigerators and Freezers
| Substitute (Name Used in the Federal Register) | Trade Name | Refrigerant Being Replaced | Retrofit/ New | Link to Use Conditions |
|---|---|---|---|---|
| Isobutane (R-600a) | 12 | N | See SNAP rule 17 | |
| R-441A | HCR-188C | 12 | N | See SNAP rule 17 |
Acceptable Substitutes for HCFC-22 (class II ODS) in Household Refrigerators and Freezers
| Substitute (Name Used in the Federal Register) | Trade Name | Refrigerant Being Replaced | Retrofit/ New |
|---|---|---|---|
| R-410A | AZ-20, Suva 9100, Puron | 22 and blends containing HFCFs | N |
| R-410B | 22, blends containing 22 and/or 142b | N | |
| R-407C | Suva 9000, Klea 66 | 22 and blends containing HFCFs | R, N |
| Ammonia Absorption | 22, blends containing 22 and/or 142b | N | |
| THR-03 | 22 | N | |
| ISCEON 59, NU-22, R-417A | ISCEON 59, NU-22 | 22, blends containing 22 and/or 142b | R, N |
| R-404A | HP62 | 22 and blends containing HFCFs | R, N |
| R-507, R-507A | AZ-50 | 22 and blends containing HFCFs | R, N |
| Self-chilling cans using recycled CO2 | 22 | R, N | |
| RS-44 (2003 formulation) | 22, blends containing 22 and/or 142b | R, N | |
| ISCEON 79, R-422A | ISCEON 79 | 22 and blends containing HFCFs | R, N |
| R-421A | Choice R421A | 22, blends containing 22 and/or 142b | R, N |
| R-421B | Choice R421B | 22, blends containing 22 and/or 142b | R, N |
| R-422D | ISCEON MO29 | 22, blends containing 22 and/or 142b | R, N |
| R-424A | RS-44 | 22, blends containing 22 and/or 142b | R, N |
| R-426A | RS-24 | 22, blends containing 22 and/or 142b | R, N |
| KDD5, R-438A | ISCEON, MO99 | 22, blends containing 22 and/or 142b | R, N |
| R-434A | RS-45 | 22, blends containing 22 and/or 142b | R, N |
| R-428A | RS-52 | 22, blends containing 22 | R, N |
| R-125/290/134a/600a (55.0/1.0/42.5/1.5) | ICOR AT-22 | 22, blends containing 22 and/or 142b | R, N |
| R-422B | XAC1, NU-22B | 22, blends containing 22 and/or 142b | R, N |
| R-422C | XLT1 | 22, blends containing 22 and/or 142b | R, N |
| R-427A | Forane 427A | 22, blends containing 22 and/or 142b | R |
| RS-24 (2002 formulation) | 22, blends containing 22 and/or 142b | R, N | |
| HFC-134a | 22, blends containing 22 and/or 142b | R, N | |
| R-407F | Genetron Performax LT | 22, blends containing 22 and/or 142b | R, N |
Substitutes Acceptable Subject to Use Conditions for HCFCs (class II ODS) in Household Refrigerators and Freezers
| Substitute (Name Used in the Federal Register) | Trade Name | Refrigerant Being Replaced | Retrofit/ New | Link to Use Conditions |
|---|---|---|---|---|
| Isobutane (R-600a) | 22 | N | See SNAP rule 17 | |
| R-441A | HCR-188C | 22 | N | See SNAP rule 17 |