Is CFC gas used in AC?

A "CFC tax" was a type of excise tax implemented by some countries, most notably the United States, on the sale or use of ozone-depleting chemicals, including CFCs. The purpose of this tax was to:

• Discourage Use: By making CFCs more expensive, the tax encouraged industries to switch to ozone-safe alternatives more quickly.
• Generate Revenue: The funds raised were often used to support research and development of environmentally friendly technologies.

This tax was a market-based strategy to accelerate the phase-out of harmful chemicals as mandated by the Montreal Protocol.