Common Refrigerant Types and Uses: R-22 (Freon): Previously widely used in residential and commercial air conditioning, but being phased out due to environmental concerns. R-134A: A common hydrofluorocarbon (HFC) refrigerant used in automotive air conditioning and some refrigeration systems. R-410A (Puron): A more environmentally friendly alternative to R-22, used in newer air conditioning systems due to its better energy efficiency and lower ozone depletion potential. R-407C: Often used as a re

Well…would you look at that! Give it a try and report back what kind of refrigerant you use. Once you’ve found the refrigerant, here is what all those numbers actually mean: R-22 is the oldest refrigerant and has been phased out. R-410A is the current refrigerant and is being phased out, R-454B is the newest refrigerant. All these transitions are in an effort to lower global warming potential! | Trane