Ozone-depleting substances (ODSODSA compound that contributes to stratospheric ozone depletion. ODS include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons, methyl bromide, carbon tetrachloride, hydrobromofluorocarbons, chlorobromomethane, and methyl chloroform. ODS are generally very stable in the troposphere and only degrade under intense ultraviolet light in the stratosphere. When they break down, they release chlorine or bromine atoms, which then deplete ozone. A detailed list (http://www.epa.gov/ozone/science/ods/index.html) of class I and class II substances with their ODPs, GWPs, and CAS numbers are available.) are chemicals that are commonly used in refrigeration, air-conditioning, and other equipment. EPA is phasing out the production and use of ODS. Learn more about the ODS phaseout and how it affects owners and operators of this equipment:

• Information resources for equipment owners and operators about the phaseout.
• Additional information for equipment owners and operators about servicing stationary refrigeration and air-conditioning systems.
• Additional information for vehicle owners about servicing motor vehicle air-conditioning systems.