R417A is a hydrofluorocarbon (HFC) refrigerant that is commonly used as a replacement for older refrigerants like R22 in air conditioning and refrigeration systems. It is a blend of R125, R134A, and R600, designed to offer improved energy efficiency while being more environmentally friendly compared to traditional refrigerants. R417A is a non-ozone-depleting refrigerant and has a lower Global Warming Potential (GWP) compared to R22, making it a suitable choice for both residential and commercial applications.