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 Cold Storage Warehouses
HCFC-22 |
|
12,
502 |
R, N |
Ikon
A |
|
12 |
R, N |
Ikon
B |
|
12 |
R, N |
THR-02 |
|
12 |
R, N |
HFC-134a |
|
12 |
R, N |
HFC-227ea |
|
12 |
N |
R-401A, R-401B |
MP-39,
MP-66 |
12 |
R, N |
R-402A, R-402B |
HP-80,
HP-81 |
502 |
R, N |
R-404A |
HP-62 |
502, 12, 500 |
R, N |
R-406A |
GHG |
12,
500 |
R |
R-407A, R-407B |
Klea
407A, 407B |
502 |
R, N |
R-408A (HCFC Blend Epsilon) |
|
502 |
R |
R-411A, R-411B |
|
12, 500,
502 |
R, N |
R-507 |
AZ-50 |
502 |
R, N |
Free
Zone (HCFC Blend Delta) |
Free Zone
/ RB-276 |
12 |
R, N |
Freeze 12 |
Freeze
12 |
12 |
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 |
R, N |
G2018C |
G2018C |
12, 500,
502 |
R, N |
Hot
Shot |
Hot Shot,
Kar Kool |
12,
500 |
R, N |
HCFC-22/HCFC-142b |
|
12 |
R, N |
THR-04 |
THR-04 |
502 |
R, N |
FOR12A |
FOR12A |
12 |
R, N |
FOR12B |
FOR12B |
12 |
R, N |
SP34E |
SP34E |
12 |
R, N |
Ammonia Vapor Compression |
|
all |
N |
HFC-134a/HBr (92/8) as the primary heat transfer
fluid in secondary-loop equipment |
|
12,
502 |
N |
Evaporative/Desiccant Cooling |
|
all |
N |
Pressure Stepdown |
|
all |
N |
Self-chilling cans using CO
2 |
|
12, 500,
502 |
N |
R-407C |
Suva
407C, Klea 407C |
502 |
R, N |
R-420A |
Choice
R-420A |
12,
500 |
R, N |
RS-24
(2002 formulation) |
|
12 |
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 Cold Storage Warehouses
R-410A,
R-410B |
AZ-20,
Suva 9100, Puron |
|
N |
THR-03 |
|
|
N |
ISCEON
59, NU-22, R-417A |
Isceon
59, NU-22 |
|
R, N |
R-407C |
Suva
9000, Klea 66 |
|
R, N |
R-507,
R507A |
AZ-50 |
|
R, N |
Ammonia
Vapor Compression |
|
|
N |
Ammonia
Absorption |
|
|
N |
R-404A |
HP62 |
|
R, N |
Self-Chilling cans using CO
2 |
|
|
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, 22 blends including R-402A, -403B, -408A, AND -411B |
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 |
R-407A |
KLEA 60, KLEA 407A |
22, 22 blends including R-401A, -401B, -402A, and -402B |
R, N |
Key: R = Retrofit Uses, N = New
Uses
|