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Acceptable Substitutes in Residential Dehumidifiers

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.

Substitutes for CFCs (class I ODS) in Residential Dehumidifiers

Substitutes (Name Used in the Federal Register) Trade Name Refrigerant Being Replaced Retrofit/New
HCFC-22   12, 500 R, N
HFC-134a   12, 500 R, N
R-401A, R-401B MP-39, MP-66 12, 500 R, N
R-406A GHG 12, 500 R
R-409A (HCFC Blend Gamma)   12, 500 R
Free Zone (HCFC Blend Delta) Free Zone / RB-276 12, 500 R, N
Freeze 12 Freeze 12 12, 500 R, N
FRIGC FR-12 (HCFC Blend Beta) FRIGC FR-12 12, 500 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, 500 R, N
Hot Shot Hot Shot, Kar Kool 12, 500 R, N
HCFC-22/HCFC-142b   12 R, N
Ikon B   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-426A RS-24 12 R, N
KDD6 KDD6 12 R, N
Key: R = Retrofit Uses, N = New Uses

Substitutes for HCFCs (class II ODS) in Residential Dehumidifiers

Substitutes (Name Used in the Federal Register) Trade Name Retrofit/New
Isceon 59, NU-22, R-417A Isceon 59, NU-22 R, N
R-404A HP62 R, N
R-507, R-507A AZ-50 R, N
R-407C Suva 9000, KLEA 66 R, N
R-410A AZ-20 N
RS-44 RS-44 R, N
R-421A Choice R421A R, N
R-422D ISCEON MO29 R, N
R-424A RS-44 R, N
KDD5 KDD5 R, N
R-434A RS-45 R, N
R-125/290/134a/600a (55.0/1.0/42.5/1.5) ICOR AT-22 R, N
R-422B XAC1, NU-22B R, N
R-422C XLT1 R, N
Key: R = Retrofit Uses, N = New Uses

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