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Acceptable Substitutes in Ice Skating Rinks

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 substitutes

Note: SNAP-related information published in the Federal Register takes precedence over all information on this page.

Acceptable Substitutes for CFCs (class I ODS) in Ice Skating Rinks

Substitute (Name Used in the Federal Register) Trade Name Refrigerant Being Replaced Retrofit/ New
HCFC-22   12, 502 R, N
R-401A, R-401B MP-39, MP-66 12 R
R-407A, R-407B Klea 407A, 407B 502 R, N
Free Zone (HCFC Blend Delta) Free Zone / RB-276 12 R, N
Freeze 12 Freeze 12 12 R, N
GHG-X4 GHG-X4, Autofrost, Chill-it 12, 500 R, N
G2018C G2018C 12, 500, 502 R, N
Hot Shot Hot Shot, Kar Kool 12, 500 R, N
THR-04 THR-04 502 R, N
Ammonia Vapor Compression   12, 502 N
RS-24 (2002 formulation)   12 R, N
R-407C Suva 407K, 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 HCFCs (class II ODS) in Ice Skating Rinks

Substitute (Name Used in the Federal Register) Trade Name Refrigerant Being Replaced Retrofit/ New
THR-03     N
ISCEON 59, NU-22, R-417A Isceon 59, NU-22   R, N
R-410A, R-410B AZ-20, Suva 9100, Puron   N
R-407C Suva 9000, Klea 66   R, N
Ammonia Vapor Compression     N
Ammonia Absorption     N
R-404A HP62   R, N
RS-44 (2003 formulation)   22 R, N
ISCEON 79 ISCEON 79   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 KDD5 22 R, N
R-434A RS-45 22 R, N
R-428A RS-52 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
Key: R = Retrofit Uses, N = New Uses

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