R-421A Refrigerant Facts & Info Sheet
R-421A is a highly efficient hydrofluorocarbon that is a drop-in replacement for R22 refrigerant. It consists of 2 components; that is, 58% of R-125 and 42% of R-134A. The refrigerant blend came into existence at a time when governments had signed a treaty to eliminate ozone-depleting refrigerants. Although R22 had a low impact on the … Read more