Phaseout of Ozone-Depleting Substances (ODS)

In the United States, ozone-depleting substances (ODS) are regulated as class I or class II controlled substances. Class I substances, such as chlorofluorocarbons (CFCs) and halons, have a higher ozone depletion potential and have been phased out in the U.S.; with a few exceptions, this means no one can produce or import class I substances. Class II substances are all hydrochlorofluorocarbons (HCFCs), which are transitional substitutes for many class I substances. New production and import of most HCFCs were phased out as of 2020. The most common HCFC in use today is HCFC-22 or R-22, a refrigerant still used in existing air conditioners and refrigeration equipment. 

• Overview of the ODS Phaseout Program

  

  Learn about the program to phase out ODS under the Clean Air Act.

  Learn About the ODS Phaseout

• ODS Production, Destruction, Import, and Export

  

  Learn about requirements surrounding the production, destruction, import, and export of ODS.

  See Requirements

• Exemptions to the ODS Phaseout

  

  Learn about certain exemptions to the phaseout of ODS production and import.

  See Exemptions

• For Equipment Owners, Operators, and Consumers

  

  Information for ODS equipment owners, operators, and consumers, including related programs.

  See Resources and More Information