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Acceptable Non-Ozone-Depleting Alternatives to HCFC-22 Under EPA’s SNAP Program Chemical
Ammonia THR-03 R-134a
RS-24 (2002 formulation) R-426A R-407C R-407F R-442A R-410A R-407A
GWP 0
918
1,430 1,505 1,508 1,774 1,825 1,888 2,088 2,107
Ozone Depleting? No No No No No No No No No No
Retrofit
X X X X X X
X
GWP = Global Warming Potential. GWP is a measure of how much a given mass of greenhouse gas is estimated to contribute to global warming relative to the same mass of carbon dioxide.
When considering an alternative for retrofitting a system, be sure to follow the manufacturer’s suggested handling and installation guidelines and to consider possible effects on the system’s energy consumption.
Are There Other Refrigerant Regulations Affecting Ice Rinks?
Ice rinks are subject to refrigerant management regulations under section 608 of the Clean Air Act, specifically the requirement to keep leak rates below 15% for comfort cooling appliances and below 35% for refrigeration equipment. In addition, it is illegal to knowingly vent refrigerant—both ozone-depleting refrigerants and the alternatives1
—during servicing, maintaining or disposing of a refrigeration or air conditioning system.
For Further Information
Phaseout of Ozone-Depleting Substances: www.epa.gov/ozone/title6/phaseout Leak Repair Requirements for HCFC-22 Systems: www.epa.gov/ozone/title6/608/leak.html Leak Prevention and Retrofit Guidelines: www2.epa.gov/greenchill/reports-guidelines-and-tools
Other EPA Resources for Ice Rink Managers
Indoor Air Quality and Ice Rinks: www.epa.gov/iaq/icearenas.html ENERGY STAR for Buildings and Plants: www.energystar.gov/buildings
FOR MORE INFORMATION Visit www.epa.gov/ozone/title6/phaseout/classtwo.html or contact David Donaldson at (202) 343-9086 or donaldson.david@epa.gov.
1 ml
Several alternatives have been exempted from the venting prohibition. Examples include ammonia in commercial or industrial process refrigeration or in absorption units, and carbon dioxide, nitrogen or water in any application. A complete list is available in the U.S. Code of Federal Regulations at http://go.usa.gov/kAhQ.
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Office of Air and Radiation (6205J) EPA-430-F-14-018 September 2014
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