Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

R-22 Replacement Status (In Spanish)



J M. Calm, Piotr A. Domanski


Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat pumps, including those for district cooling and heating. Individual equipment using this versatile refrigerant ranges from 2 kW to 33 MW (0.5 to 9,500 tons) in cooling capacity. R-22 use includes equipment with rotary-rolling-piston, reciprocating-piston, scroll, screw, and centrifugal compressors and experimentally, absorption cycles. No other refrigerant has achieved such a wide range of commercial capacities or applications.
AC/R Latinoamerica
No. 4


R-22 , refrigerants


Calm, J. and Domanski, P. (2006), R-22 Replacement Status (In Spanish), AC/R Latinoamerica, [online], (Accessed June 7, 2023)
Created July 31, 2006, Updated October 12, 2021