Significant Environmental Benefits of New DuPont Refrigerant Recognized by Global Automotive OEMs

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Offers Greatest Potential to Meet Environmental and Consumer Needs.

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the greatest potential to meet environmental and consumer needs.

The Society of Automotive Engineers (SAE) International Cooperative Research Program, sponsored by major automotive manufacturers including Chrysler, Ford, General Motors, Fiat, Jaguar, Land Rover, Hyundai, PSA, Renault, and Toyota, recently released a report summarizing results of its industry evaluation of low global warming potential (GWP) refrigerant, hydrofluoro olefin (HFO)-1234yf, which was co-developed by DuPont. The report validated that HFO-1234yf is safe to use in mobile air conditioning, and that, of all the proposed alternatives considered, HFO-1234yf has significant environmental benefits. The report concluded HFO-1234yf offers “the greatest potential to meet environmental and consumer needs.”

“DuPont is pleased that SAE International and leading automotive manufacturers have recognized the benefits of HFO-1234yf,” said Cynthia C. Green, vice president and general manager – DuPont Fluoroproducts. “HFO-1234yf has a dramatically lower global warming potential than the R-134a refrigerant used today, and the best overall lifecycle climate performance globally, which makes it the preferred environmental solution. Since it is a near drop-in replacement for R-134a, it is also a practical choice, keeping costs down for both automakers and consumers at a critical time.”

At a recent meeting of the Mobile Air Conditioning Climate Protection Partnership, Stephen O. Andersen of the U.S. Environmental Protection Agency Climate Protection Partnerships Division said, “All but four participants agree that HFC-1234yf is the refrigerant-of-choice to replace HFC-134a in motor vehicle air conditioning. The best estimate is that companies making 70 percent of air conditioned vehicles sold worldwide already consider R-1234yf to be the environmentally superior choice.” An announcement of cooperation is expected in February 2009 that is aimed at accelerating the commercial introduction of improved air conditioning systems in the United States and global markets using HFO-1234yf.

DuPont estimates the use of HFO-1234yf refrigerant in new cars has the potential to save more than 590 million gallons (about 2,200 million liters) of fuel annually – the equivalent of taking approximately 1.5 million cars off the road each year, based on equivalent cooling and energy performance and global adoption of HFO-1234yf by the year 2017.

Because of the lead times required for new car designs, global automotive manufacturers and suppliers have been working with industry experts and independent test laboratories since 2007, when the first SAE International Cooperative Research Program (CRP) was formed to investigate the safety and performance of HFO-1234yf for use in mobile air conditioning.

Based on the findings of the SAE International CRP study, and pending commercial agreements, HFO-1234yf is expected to replace R-134a in automotive air conditioning systems as early as 2011, when a European Union (EU) directive requiring its phase out for all new type vehicles goes into effect. The phase out will be complete by 2017 in the EU, when R-134a will be banned in all new cars. Autos and light trucks will be required to use refrigerants with a GWP value lower than 150. HFO-1234yf has a GWP value of 4.

The summary SAE International CRP report is available on-line at: For more information on HFO-1234yf, please visit

DuPont – one of the first companies to publicly establish environmental goals 19 years ago – has broadened its sustainability commitments beyond internal footprint reduction to include market-driven targets for both revenue and research and development investment. The goals are tied directly to business growth, specifically to the development of safer and environmentally improved new products for key global markets.

DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture and food; building and construction; communications; and transportation.


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