ATLANTA, GA — The same message came from virtually all the major refrigerant manufacturers: In air conditioning applications, HCFC-22 remains the refrigerant of choice. HFC-410A and HFC-407C remain the primary long-term alternatives and were shown in a number of compressors and condensing units on the show floor.
Officials at various booths said the longer 22 remains readily available, the more likely it will be that 410A eventually catches on before 407C and becomes the long-term refrigerant of choice.