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Volkswagen to use CO2 as refrigerant for future air conditioning systems

Green Car Congress

The Volkswagen Group announced that it is choosing CO 2 as the future low global warming potential (GWP) refrigerant for its mobile air conditioning (MAC) systems. BMW and Volkswagen followed suit. R134a replaced CFC-12 as the MAC refrigerant in the early 1990s due to the negative impact of CFCs on the Earth’s ozone layer.

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