![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Acceptable Substitutes in Household and Light Commercial Air Conditioning
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 & Light Commercial AC
| Substitute (Name Used in the Federal Register) | Trade Name | Refrigerant Being Replaced | Retrofit/ New |
|---|---|---|---|
| Evaporative/Desiccant Cooling | all CFCs | N | |
| R-407C | Suva 407C, Klea 407C | 502 | R, N |
| R-422C | ICOR XLT1 | 502 | R, N |
| KDD6 | KDD6 | 12 | R, N |
Key: R = Retrofit Uses, N = New
Uses
Acceptable Substitutes for HCFCs (class II ODS) in Household & Light Commercial AC
| Substitute (Name Used in the Federal Register) | Trade Name | Refrigerant Being Replaced | Retrofit/ New |
|---|---|---|---|
| HFC-134a | 22 | N | |
| THR-03 | 22 | N
NOTE: this determination applies ONLY to window-unit residential air conditioning, and not to central air conditioning systems. |
|
| ISCEON 59, NU-22, R-417A | ISCEON 59, NU-22 | 22 | R, N |
| R-410A, R-410B | AZ-20, Suva 9100, Puron | 22 | N |
| R-407C | Suva 9000, Klea 66 | 22 | R, N |
| R-507, R-507A | AZ-50 | 22 | R, N |
| NU-22 | NU-22 | 22 | R, N |
| Ammonia Absorption | 22 | N | |
| Evaporative/Desiccant Cooling | all HCFCs | N | |
| R-404A | HP62 | 22 | R, N |
| R-125/134a/600a (28.1/70.0/1.9) | 22 | R, N | |
| RS-44 | RS-44 | 22 | R, N |
| R-421A | Choice R421A | 22 | R, N |
| R-422D | ISCEON MO29 | 22 | R, N |
| R-424A | RS-44 | 22 | R, N |
| R-125/290/134a/600a (55.0/1.0/42.5/1.5) | ICOR AT-22 | 22 | R, N |
| R-422C | ICOR XLT1 | 22 | R, N |
| R-422B | ICOR XAC1 | 22 | R, N |
| KDD5, R-438A | ISCEON MO99 | 22 | R, N |
| R-434A | RS-45 | 22 | 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, 402A, 402B, 408A | R, N |
| R-407A | KLEA 60, KLEA 407A | 22, 22 blends including R-401A, -401B, -402A, and -402B | R, N |
| R-427A | Forane 427A | 22 | R |
Key: R = Retrofit Uses, N = New
Uses