Quote:
Originally Posted by Normal
In some cases…the government banned certain types of refrigerants (Freon) because of environmental concerns. After R 12 was banned R 134 took its place. This made R 12 much more valuable. Most compressors on AC units couldn’t handle the new refrigerant so R 12 was the only option or just buy a brand new AC. Condensation rates and expansion valves weren’t compatible with transient mixes.
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As I understand it, the production of the old refrigerants was banned, but not the recycling of those refrigerants. So, when an older HVAC system is replaced, the old, obsolete refrigerant is reclaimed and resold as a recycled product. There is a good supply of the older refrigerants still available for purchase.