R-410A

R-410A is a hydrofluorocarbon (HFC) refrigerant blend composed of difluoromethane (R-32) and pentafluoroethane (R-125). It was developed as a replacement for R-22 (Freon), which is an ozone-depleting substance being phased out under the Montreal Protocol.

R-410A is widely used in residential and commercial air conditioning systems, as well as heat pumps. It offers several advantages over R-22, including a higher cooling capacity and energy efficiency. Operating pressures are significantly higher than those of R-22 systems. Because of these higher pressures, R-410A systems cannot be retrofitted to use R-22, and require specialized equipment and components designed for the higher pressure.

While R-410A does not deplete the ozone layer, it has a high global warming potential (GWP), contributing to climate change. Due to increasing environmental concerns about high-GWP refrigerants, R-410A is itself being phased down in many countries under international agreements like the Kigali Amendment to the Montreal Protocol and regional regulations. Lower-GWP alternatives, such as R-32 and other HFC/HFO blends, are increasingly being adopted as replacements for R-410A in new equipment.