Since 2015, Puron has been the standard refrigerant used in air conditioning. Why Isn’t Freon Used Anymore? Freon was invented in 1928 by Thomas Midgley and was deemed a miracle compound that was both non-toxic and non-flammable. It most certainly was — back in its day — and it revolutionized refrigeration. In 1932, Freon was used in the The reason why this is happening can vary, although the most common culprits are: A Freon Leak. If your system is low on refrigerant, your evaporator coil can get too cold and condense too much water. This will lead to ice forming on the coils and can result in your entire AC unit freezing up. Dirty Air Filters. The advantage of ester oil is that it works with both R12 as well as R134a, so you can fill the system with it and then use either refrigerant. The three major kinds of refrigerant oil: Mineral oil for R12 systems (left), PAG oil for R134a systems (center), and ester oil for either Rob Siegel. 8. R455A Refrigerant. R455A is an azeotropic refrigerant blend is one of the environmentally friendly refrigerants that is used as a replacement for R22 and R404A in new low, medium and high-temperature systems. It has a very low Global Warming Potential (GWP) of 146, R455A has an Ozone Depletion Potential (ODP) of 0. R-410A Freon refrigerant acts as the circulatory system carrying blood and oxygen to and from the heart, or in this case, the compressor. The compressor takes in low-pressure vapor through a suction line. Compressors then apply pressure to produce a high-pressure vapor for the condenser to release. The remaining low-pressure vapor falls through The common refrigerant R-410A is a zeotropic, 50/50-mass-percent mixture of difluoromethane and pentafluoroethane . Pentafluoroethane is a common replacement for various chlorofluorocarbons (i.e Freon) in new refrigerant systems, especially for air-conditioning. .

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