I well remember the beginning of the ozone layer crisis. This was well before "glowbull" warming came along.
Suddenly everything became a crisis and so they had to being banning "Freon", which was the brand name for the common refrigerant used at that time. According to Brave AI:
"DuPont's critical manufacturing patent for Freon (U.S. Patent #3258500, titled "Process for Fluorinating Halohydrocarbons") was set to expire in 1979.
This expiration coincided with a period of increasing regulatory action against chlorofluorocarbons (CFCs), including a U.S. ban on CFCs in aerosol cans in 1978."
So as Dupont's patent for Freon was expiring, regulations were being drafted to bring control over refrigerants.
Then about 5 years later the hysteria began when the ozone hole was discovered over Anarctica.
Since then the EPA keeps banning what ever refrigerant is being used, leading to a continual HVAC upgrade cycle to keep up with the changes.
All of that goes on, while common propane is actually an excellent refrigerant and is relatively dirt cheap. But oh, no, we have to invent something that we can patent and make money on. When the patent expires, then the EPA steps in to force the upgrade to the next patented refrigerant.
Just like big pharma.
I well remember the beginning of the ozone layer crisis. This was well before "glowbull" warming came along.
Suddenly everything became a crisis and so they had to being banning "Freon", which was the brand name for the common refrigerant used at that time. According to Brave AI: "DuPont's critical manufacturing patent for Freon (U.S. Patent #3258500, titled "Process for Fluorinating Halohydrocarbons") was set to expire in 1979.
This expiration coincided with a period of increasing regulatory action against chlorofluorocarbons (CFCs), including a U.S. ban on CFCs in aerosol cans in 1978." So as Dupont's patent for Freon was expiring, regulations were being drafted to bring control over refrigerants.
Then about 5 years later the hysteria began when the ozone hole was discovered over Anarctica.
Since then the EPA keeps banning what ever refrigerant is being used, leading to a continual HVAC upgrade cycle to keep up with the changes. All of that goes on, while common propane is actually an excellent refrigerant and is relatively dirt cheap. But oh, no, we have to invent something that we can patent and make money on. When the patent expires, then the EPA steps in to force the upgrade to the next patented refrigerant. Just like big pharma.
As I always tell my wife...it's ALWAYS about power, control and $$$$$.