AHRI Low-GWP Alternative Refrigerants Evaluation Program

In response to environmental concerns raised by the use of high-global warming potential (GWP) refrigerants, AHRI has established this industry-wide cooperative research program to identify and evaluate promising alternative refrigerants for major product categories.

Literature Review

The AHRI Low-GWP Alternative Refrigerants Evaluation Program (AREP) includes 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 is managed by a technical committee reporting to the AHRI Executive Committee. The AHRI Research Department administers the Low-GWP AREP program, and 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. To access the Low-GWP AREP Technical Committee meeting minutes available only to AHRI members, visit our AREP Member Resources
Reference List for Low-GWP Refrigerant Testing 

AREP Member Resources

Read member-only resources for the Low-GWP program.

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Final Low-GWP AREP Test Reports

Product categories 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.

The AHRI Low-Global Warming Potential Alternative Refrigerants Evaluation Program is nearing the end of its second phase.

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