Freon, which is a brand name for a type of chlorofluorocarbon (CFC) refrigerant, was being phased out due to its harmful impact on the environment. CFCs are known to deplete the ozone layer and contribute to global warming as potent greenhouse gases.
Since then, there have been significant efforts to replace Freon and other CFCs with more environmentally friendly refrigerants. The Montreal Protocol, an international treaty established in 1987, has been instrumental in regulating the production and consumption of ozone-depleting substances, including CFCs.
The most common replacement for Freon is hydrochlorofluorocarbon (HCFC) refrigerants, such as R-22, which have lower ozone-depleting potential but still contribute to global warming. As a result, many countries have initiated a phase-out of HCFCs as well.
The preferred and more environmentally friendly alternatives are hydrofluorocarbon (HFC) refrigerants, such as R-410A, R-134a, and others, which have no ozone-depleting potential. These HFC refrigerants are widely used in modern air conditioning and ventilation systems, particularly in new installations.
However, it's essential to note that regulations and practices related to refrigerants can vary from country to country, and changes may have occurred . Therefore, for the most up-to-date information on the current state of Freon and other refrigerants, it's best to consult local HVAC (heating, ventilation, and air conditioning) professionals or regulatory authorities.