AHRI Low-GWP Alternative Refrigerants Evaluation Program

In response to environmental concerns raised by the use of high global warming potential (GWP) refrigerants, the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) is launching an industry-wide cooperative research program to identify and evaluate promising alternative refrigerants for major product categories.

These include air conditioners, heat pumps, dehumidifiers, chillers, water heaters, ice makers, and refrigeration equipment. The program, referred to as the Low GWP Alternative Refrigerants Evaluation Program, or low GWP AREP, is strongly desired by the industry to assess the research needs, accelerate industry's response to environmental challenges raised by the use of high GWP refrigerants, and avoid duplicative work.

Literature Review

Reference List for low GWP Refrigerants Testing

The program consists of compressor calorimeter testing, system drop-in testing, soft-optimized system testing, and heat transfer testing. All tests other than heat transfer coefficient measurements are expected to be performed at participating companies' laboratories, using their own resources, at their own expense. The Low GWP AREP program will be managed by a technical committee reporting to the AHRI Executive Committee. The AHRI Research Department administers the Low-GWP AREP program, coordinates and disseminates information and reports among the participating companies and the observers. Representatives of interested organizations should contact AHRI's Research Department for further information. Questions should be directed to: Mr. Xudong Wang, Vice President of Research. To access the Low-GWP AREP Technical Committee meeting minutes, available only to AHRI members, please login and go to www.ahrinet.org/AREP.

Final Low-GWP AREP Test Reports

The AHRI Low-Global Warming Potential Alternative Refrigerants Evaluation Program is nearing the end of its second phase. All final test reports are listed below by category.

High Ambient



Air Conditioning & Heat Pumps