Jump to main content.


Acceptable Substitutes for CFC-11 in Centrifugal Chillers

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 CFC-11 in Centrifugal Chillers
Substitutes (Name Used in the Federal Register) Trade Name Retrofit/New
HCFC-123 R, N
HCFC-22 N
HFC-134a N
HFC-227ea N
HFC-245fa N
Ammonia Vapor Compression N
Evaporative Cooling N
Desiccant Cooling N
Ammonia / Water Absorption N
Water / Lithium Bromide Absorption N

Key: R = Retrofit Uses, N = New Uses


Local Navigation



Jump to main content.