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Why did vehicle manufacturers change from R-12 A/C systems to R-134a ?

April 26, 2017manufacturers r-12 R-134a SYSTEMS vehicle

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Why did vehicle manufacturers change from R-12 A/C systems to R-134a ?

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In the mid-1990s, environmental regulations required vehicle manufacturers to stop manufacturing A/C systems that use R-12 refrigerant, which is an ozone-depleting substance (called a “CFC”), and to change to A/C systems that use R-134a refrigerant, which is NOT an ozone-depleting substance.