R-437A (FREON™ 49Plus) is a zeotropic HFC blend, which can replace R-12 (CFC), HCFC blends R-401A, R-409A and R-413A (HFC) in domestic refrigeration, commercial and industrial.
It is used as a direct replacement in existing installations; transport refrigeration, cold rooms, refrigerated wine cellars, domestic refrigerators and car air conditioning.
Do not use in systems with a flooded evaporator or centrifugal chillers.