Earlier this year, a new legislation was enforced banning the use of Hydrochlorofluorocarbons including R22 gas. R22 is a gas used in AC systems that weaken the ozone layer and many AC units pre-dating 2004 use it. HCFC, which are petroleum-based products, have been replacing the CFCs (Chlorofluorocarbures) since 1995. Until recently they were considered acceptable interim substitutes for CFCs. However, even though far less polluting than CFCs, HCFC’s are still harmful to the environment. R22 has been extensively used in many systems before 2004 but as of the 1^st January 2015, the use of any appliances that might contain this fluid is no longer permitted. Continue reading →