Some other people disagree. Some CFCs do break down ozone more than others. Some CFCs survive in the atmosphere longer than others before breaking down. Regardless of whether or not they do, new laws have been enacted to limit the production and venting of CFCs. In the United States, the Clean Air Act of 1990 requires CFC production to cease by that date.
New refrigerants are currently under development and in production.
There are also strict new laws designed to prevent venting of existing CFC refrigerants to the atmosphere. For regulations relating to HVAC systems, ask for the fact sheet about section 608 of the Clean Air Act. There is also information about EPA reviews of replacement refrigerants. Under the current EPA regulations, only if the system contains more than 50 lbs of refrigerant. For the purposes of this group, IAQ does not generally refer to the temperature of, or amount of moisture in, indoor air.