Substitutes in Household Refrigerators and Freezers
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.Substitutes are reviewed on the basis of environmental and health risks, including factors such as ozone depletion potential, global warming potential, toxicity, flammability, and exposure potential. Lists of acceptableacceptableThis designation means that a substitute may be used, without restriction, to replace the relevant ODS within the end-use specified. For example, HCFC-22 is an acceptable substitute for R-502 in industrial process refrigeration. Note that all SNAP determinations apply to the use of a specific product as a substitute for a specific ODS in a specific end-use. and unacceptable
UnacceptableThis designation means that it is illegal to use a product as a substitute for an ODS in a specific end-use. For example, HCFC-141b is an unacceptable substitute for CFC-11 in building chillers. Note that all SNAP determinations apply to the use of a specific product as a substitute for a specific ODS in a specific end-use. substitutes are updated several times each year. The list of substitutes is shown below.
Note: SNAP-related information published in the Federal Register takes precedence over all information on this page.
Substitute | Trade Name(s) | Retrofit/New | ODP![]() |
GWP![]() |
ASHRAE![]() Designation (Safety Classification) |
SNAP Listing Date | Listing Status |
---|---|---|---|---|---|---|---|
Ammonia Absorption | R/N | 0 | 0 | B2 | July 28, 1995; September 5, 1996 |
Acceptable | |
FOR12A | FOR12A | R/N | 0 | 1,100 | A1 | December 18, 2000; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
FOR12B | FOR12B | R/N | 0 | 1,000 | A1 | December 18, 2000; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
RB-276 | Free Zone, HCFC Blend Delta | R/N | 0.013 | 1,592 | A1 | September 5, 1996 | Acceptable |
Freeze 12 | Freeze 12 | R/N | 0.013 | 1,606 | A1 | September 5, 1996 | Acceptable |
R-416A | FRIGC FR-12, HCFC Blend Beta | R/N | 0.009 | 1,081 | A1 | February 8, 1996 | Acceptable |
GHG-HP | HCFC Blend Lambda | R/N | 0.056 | 1,893 | A1 | February 8, 1996 | Acceptable |
R-414A | GHG-X4, Autofrost, Chill-it, HCFC Blend Xi | R/N | 0.045 | 1,478 | A1 | September 5, 1996 | Acceptable |
GHG-X5 | GHG-X5 | R/N | 0.032 | 2,377 | A1 | June 3, 1997 | Acceptable |
HCFC-22/HCFC-142b | R/N | 0.055-0.065 | 1,810-2,310 | A1 | June 3, 1997 | Acceptable | |
HFC-134a | R/N | 0 | 1,430 | A1 | March 18, 1994; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. | |
HFC-152a | N | 0 | 124 | A2 | March 18, 1994 | Acceptable | |
R-414B | Hot Shot, Kar Kool, HCFC Blend Omicron | R/N | 0.098 | 3,337 | A1 | September 5, 1996 | Acceptable |
Ikon A | Ikon-12, Blend Zeta | N | 0 | N/A | A1 | June 19, 2000 | Acceptable |
Ikon B | N | 0 | N/A | A1 | June 19, 2000 | Acceptable | |
R-125/R-290/R-134a/R-600a (55.0/1.0/42.5/1.5) | ICOR AT-22 | R/N | 0 | 2,530 | A1 | March 29, 2006; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-290 (Propane) | N | 0 | 3 | A3 | April 10, 2015; August 8, 2018 |
Acceptable with Use Conditions: See rule for detailed conditions. | |
R-401A | SUVA MP-39 | N | 0.037 | 1,182 | A1 | January 13, 1995 | Acceptable |
R-401B | SUVA MP-66 | N | 0.040 | 1,288 | A1 | January 13, 1995 | Acceptable |
R-402A | HP-80 | R | 0.019 | 2,746 | A1 | August 26, 1994 | Acceptable |
R-402B | HP-81 | R | 0.03 | 2,379 | A1 | August 26, 1994 | Acceptable |
R-404A | SUVA HP-62 | R/N | 0 | 3,920 | A1 | March 18, 1994; January 13, 1995; December 20, 2002; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-406A | GHG-12, GHG-X3, McCool, Autofrost X3 | R | 0.057 | 1,900 | A2 | August 26, 1994 | Acceptable |
R-407C | Suva 407C, Klea 407C | R/N | 0 | 1,770 | A1 | February 8, 1996; December 20, 2002; August 21, 2003; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-407F | Genetron Performax LT | R/N | 0 | 1,820 | A1 | October 4, 2011; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-409A | HCFC Blend Gamma | R | 0.047 | 1,558 | A1 | August 26, 1994 | Acceptable |
R-410A | AZ-20, Suva 9100, Puron | N | 0 | 2,090 | A1 | February 8, 1996; December 20, 2002; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-410B | N | 0 | 2,230 | A1 | February 8, 1996; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. | |
R-417A | ISCEON 59, NU-22 | R/N | 0 | 2,350 | A1 | December 6, 1999; June 16, 2010; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-420A | Choice R-420A | R/N | 0.008 | 1,536 | A1 | October 1, 2004 | Acceptable |
R-421A | Choice R-421A | R/N | 0 | 2,630 | A1 | September 28, 2006; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-421B | Choice R-421B | R/N | 0 | 3,190 | A1 | September 28, 2006; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-422A | ISCEON 79 | R/N | 0 | 3,140 | A1 | October 1, 2004; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-422B | ICOR XAC1, NU-22B | R/N | 0 | 2,530 | A1 | March 29, 2006; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-422C | ICOR XLT1 | R/N | 0 | 3,390 | A1 | March 29, 2006; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-422D | ISCEON MO29 | R/N | 0 | 2,730 | A1 | September 28, 2006; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-424A | RS-44 | R/N | 0 | 2,440 | A1 | September 28, 2006; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-426A | RS-24 | R/N | 0 | 1,510 | A1 | September 28, 2006; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-427A | Forane 427A | R | 0 | 2,140 | A1 | January 2, 2009 | Acceptable |
R-428A | RS-52 | R/N | 0 | 3,610 | A1 | October 4, 2007; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-434A | RS-45 | R/N | 0 | 3,250 | A1 | October 4, 2007; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-437A | KDD6, ISCEON MO49 Plus | R/N | 0 | 1,810 | A1 | January 2, 2009; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-438A | KDD5, ISCEON MO99 | R/N | 0 | 2,270 | A1 | October 4, 2007; June 16, 2010; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-441A | HCR-188C | N | 0 | <5 | A3 | December 20, 2011; August 8, 2018 |
Acceptable with Use Conditions: See rule for detailed conditions. |
R-450A | Solstice® N-13 | R/N | 0 | 601 | A1 | October 21, 2014 | Acceptable |
R-507, R-507A | AZ-50 | R/N | 0 | 3,990 | A1 | January 13, 1995; December 20, 2002; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
R-513A | Opteon® XP 10 | R/N | 0 | 630 | A1 | July 16, 2015 | Acceptable |
R-600a (Isobutane) | N | 0 | 3 | A3 | December 20, 2011; August 8, 2018 |
Acceptable with Use Conditions: See rule for detailed conditions. | |
RS-24 (2002 formulation) | R/N | 0 | 1,510 | A1 | December 20, 2002; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. | |
RS-44 (2003 formulation) | R/N | 0 | 2,420 | A1 | August 21, 2003; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. | |
Self-chilling cans using CO2 | N | 0 | 1 | A1 | February 24, 1998 | Acceptable | |
SP34E | SP34E | R/N | 0 | <1,470 | A1 | December 18, 2000; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. |
THR-01 | N | >0 | N/A | A2 | February 24, 1998 | Acceptable | |
THR-02 | N | 0 | N/A | A1 | December 6, 1999 | Acceptable | |
THR-03 | R/N | 0 | N/A | A1 | December 6, 1999; December 1, 2016 |
Unacceptable in new equipment, as of January 1, 2021. | |
THR-04 | R/N | >0 | N/A | A1 | June 8, 1999 | Acceptable |