R407c is a hydrofluorocarbon (HFC) refrigerant gas blend that is commonly used in air conditioning systems for residential and commercial applications, such as hotels and office buildings, due to its efficient performance and safety.. It is composed of three different refrigerants: R32, R125, and R134a.

It has a lower Global Warming Potential (GWP) than some other refrigerants, which makes it an environmentally friendly alternative and a replacement for older refrigerants, such as R22, which were found to contribute to ozone depletion.