It’s likely you’ve heard of Freon. We’ve all heard about repairs being needed when you  “have a freon leak” and or need to get the “Freon recharged” in air conditioning systems on cars, for refrigerators, and for HVAC systems. Freon, also known as R-22, is the refrigerant gas used in manufacturing air conditioners and refrigeration systems for years. However, Freon is highly destructive to ozone, and as a result, our Country and Countries around the world have entered into agreements to phase out Freon in favor of other refrigerants, such as Puron. In fact, as of 2010, no new air conditioners or refrigeration systems were allowed to be manufactured in the US using Freon/R-22, and as of 2020, no new Freon can be manufactured or imported into the US.