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Press release on Climate | Energy

Federal Environment Agency: Possible safety risks in mobile air conditioning systems?

The Federal Environment Agency (UBA) has spoken in favour of use of the natural refrigerant R744 and against the use of the perfluorinated hydrocarbon HFC-1234yf (tetrafluoropropene) as a refrigerant in mobile air conditioners.  German manufacturers in particular have up to now shown preference for the natural refrigerant R744 (CO2), yet a clear and final decision taken by the automotive industry is still outstanding.  Based on latest findings, UBA President Jochen Flasbarth has pleaded in favour of urging the German automobile industry to quickly establish the environmentally friendly CO2  as the refrigerant of choice in mobile air conditioners. “It has never paid to hesitate as concerns environmental innovations in automotive engineering or not to take EU regulations seriously. Mobile air conditioners equipped with CO2 as a natural refrigerant are ready to go into production. In contrast, studies prove that the use of the synthetic refrigerant HFC-1234yf in mobile air conditioning systems is associated with risks that have not yet been adequately assessed.” If HFC-1234yf is ignited, for example in an engine fire, highly toxic and corrosive hydrogen fluoride (fluoric acid) is produced, which is associated with considerable additional risk. read more

The Umweltbundesamt

For our environment