An AHRI technology research committee has established a subcommittee that is tasked with creating requirements for using “2L” refrigerants.

The group will examine existing research and work with other HVAC market industry groups to complete its work. Its findings will be shared with regulators and HVAC construction standards organizations, the Air-Conditioning and Refrigeration Institute said.

"The industry needs to develop a complete list of research needs in order to provide the scientific results necessary to support the safe use of flammable refrigerants in the future," said AHRI Director of Research Xudong Wang. "AHRI will play an important role by establishing collaboration within the industry and among relevant organizations, and by conducting research and publishing relevant results."