R-32 is a hydrofluorocarbon (HFC) refrigerant with zero ozone depletion potential and low global warming potential of 675, making it an environmentally favorable alternative to R-22. This single-component refrigerant gained approval for air conditioning applications in many countries starting in 2015 and represents significant progress toward sustainable cooling solutions. R-32 delivers approximately 5 to 10 percent higher efficiency than R-410A in equivalent systems, reducing energy consumption and operating costs.
Technical Properties
R-32 has a critical temperature of 351.3K and operates at higher pressures than R-410A, requiring stronger system components and specialized compressor oils. The refrigerant exhibits excellent heat transfer characteristics with lower pressure drop in piping. System capacity at standard conditions is higher per pound compared to legacy refrigerants, allowing smaller refrigerant charges.
Safety and Regulatory Status
R-32 is classified as A2L mildly flammable, requiring specialized training and equipment for safe handling. The EPA approved R-32 as an acceptable substitute for R-22 in new equipment, and several manufacturers now offer R-32 systems. Supply and technician availability continue expanding as industry adoption increases worldwide.