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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
Hot Shot 2   Hot Shot 2 12, 500 R
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 Refrigerant Being Replaced Retrofit/New
R-404A HP62 22 and blends containing HCFCs R, N
R-507, R-507A AZ-50 22 and blends containing HCFCs R, N
R-407C Suva 9000, KLEA 66 22 and blends containing HCFCs R, N
R-410A AZ-20 22 and blends containing HCFCs N
R-410B   22, blends containing 22 and/or 142b N
RS-44 (2003 formulation) RS-44 (2003 formulation) 22, blends containing 22 and/or 142b R, N
R-421A Choice R421A 22, blends containing 22 and/or 142b R, N
R-422D ISCEON MO29 22, blends containing 22 and/or 142b R, N
R-424A RS-44 22, blends containing 22 and/or 142b R, N
KDD5, R-438A ISCEON MO99 22, blends containing 22 and/or 142b R, N
R-434A RS-45 22, blends containing 22 and/or 142b R, N
R-125/290/134a/600a (55.0/1.0/42.5/1.5) ICOR AT-22 22, blends containing 22 and/or 142b R, N
R-422B XAC1, NU-22B 22, blends containing 22 and/or 142b R, N
R-422C XLT1 22, 402A, 402B, 408A, and blends containing 22 and/or 142b R, N
HFC-134a   22, blends containing 22 and/or 142b R, N
R-426A RS-24 22, blends containing 22 and/or 142b R, N
RS-24 (2002 formulation) RS-24 (2002 formulation) 22, blends containing 22 and/or 142b R, N
R-437A ISCEON MO49 Plus 22, blends containing 22 and/or 142b R, N
R-125/134a/600a (28.1/70.0/1.9) NU-22 old composition 22, blends containing 22 and/or 142b R, N
Hot Shot 2   Hot Shot 2 22, blends containing 22 and/or 142b R
Key: R = Retrofit Uses, N = New Uses

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