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Why can't we continue to use R12? Since the early 1970s scientist have been watching a hole grow in the ozone layer.  And because of this ozone problem, over 150 countries agreed to stop the production of CFCs.  This agreem Air Conditioning Frequently Asked Questions Air Conditioning FAQ A/C Systems and Service Refrigerants Contamination EPA A/C Organizations A/C Systems and Service What is an air purge system? An air-purge Can I recycle alternative refrigerants? In a recent letter, the EPA said refrigerant blends used in MVACs could be recycled provided that the recycling equipment meets a new Underwriters Laboratory (UL) standard and the refrigerant is retu I heard a story about HC-12a / OZ-12, are they flammable refrigerants? And what is the full story? According to the EPA HC-12a and OZ-12 brand hydrocarbon refrigerant blends are flammable refrigerants.  Their primary components are hydrocarbons, which are flammable substances like propane and Air Conditioning Frequently Asked Questions "The Full Story" Air Conditioning FAQ A/C Systems and Service Refrigerants Contamination EPA A/C Organizations A/C Systems and Service What is an air purge system? An air-purge Honeywell Solstice yf refrigerant Fact Sheet Fact Sheet Environmental Impact Development Milestones Occupational Health and Safety Brochures Fact Sheet Solstice yf refrigerant Developed for auto air conditioning Environmentally pre Choosing and Using Alternative Refrigerants Choosing and Using Alternative Refrigerants for Motor Vehicle Air Conditioning Ozone Protection Hotline (800) 296-1996 May 1, 2001 Download a WordPerfect 5.1 version of this fact sheet (36K