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Delphi’s HVAC Technology to Help Meet New Global Refrigerant Regulations


Frankfurt, Germany — With Europe set to enact new refrigerant regulations and the U.S. and other countries considering similar moves, Delphi Corp. is ready to lead with air-conditioning systems that use a new refrigerant without adding significant cost to the vehicle.

“When the industry migrated from R-12 (commonly known as Freon) to R-134a, Delphi led that transition,” said Steve Kiefer, Delphi Thermal Systems director of engineering, Delphi Corp. “We are using that expertise again today. And we are doing it without adding considerable cost to the vehicle.”

Delphi continues to work with automakers to develop air conditioning technology that uses a new air conditioning refrigerant — R-1234yf, which is a much more environmentally-friendly option than the current refrigerant. With a Global Warming Potential (GWP) of just 4 compared to 1,430 for R-134a, new systems using the R-1234yf refrigerant are greener than current HVAC systems.

Heating, ventilation and air-conditioning (HVAC) systems contribute to global warming due to energy usage during operation and by refrigerant leakage into the atmosphere. The climate impact of the refrigerant itself is defined as its Global Warming Potential (GWP). In 2006, the European Union banned the use of refrigerants with a GWP that is greater than 150 for all new Type-Approvals (new vehicle platforms) from 2011 and for all new vehicles as of 2017.

In addition, the U.S. Federal Government is pushing forward with legislation and regulation through the Environmental Protection Agency (EPA) and the National Highway Traffic Safety Administration that will encourage using the new refrigerant for the U.S. in a similar timeframe.

“R-1234yf has been endorsed by several regulators and technical associations including the EPA, Society of Automotive Engineers and the Japan Automobile Manufacturers Association. We also believe R-1234yf is both a cost-efficient and effective refrigerant option,” Kiefer said. “Most importantly, Delphi’s R-1234yf solutions are expected to be ready to meet the 2011 legislation timeframe. We are ready to help global automakers make the transition to the new refrigerant.”

Because R-1234yf can be used with the low-pressure air conditioning systems used in today’s vehicles, proactive redesign of Delphi’s HVAC systems enables near drop-in replacements for current systems.

In addition, Delphi’s top-performing Internal Heat Exchanger (IHX) will provide OEMs with more energy efficient and higher capacity HVAC systems.

For more about Delphi (PINKSHEETS: DPHIQ) visit


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