As noted in the letter below, the Montreal Protocol was created originally to replace the use of certain refrigerants with hydrofluorocarbons (HFC) in air conditioners and refrigerators because of the belief that those refrigerants were depleting the ozone layer. The Kigali Amendment now would require that HFC's be replaced with hydrofluoro-olefins (HFO). HFO's cost ten times what HFC's cost, and would greatly hamper the spread of refrigeration and air conditioning to the developing world, in … [Read more...]