residential or light commercial air-conditioning or heat pump systems · installation · § 84.54(c)(1)

What is the maximum gwp for residential or light commercial air-conditioning or heat pump systems · installation · § 84.54(c)(1)?

For residential or light commercial air-conditioning or heat pump systems, restriction type is installation; cfr paragraph is § 84.54(c)(1); maximum gwp is 700; effective date is January 1, 2025; conditions is may continue to be installed where all specified components of that system are manufactured or imported prior to January 1, 2025; exemptions is except for variable refrigerant flow air-conditioning and heat pump systems, recorded from its source on 2026-08-06.

(1) Effective January 1, 2025, residential or light commercial air-conditioning or heat pump systems using a regulated substance, or a blend containing a regulated substance, with a global warming potential of 700 or greater, except for variable refrigerant flow air-conditioning and heat pump systems. New residential and light commercial air-conditioning and heat pump systems using a regulated substance, or a blend containing a regulated substance, with a global warming potential of 700 or greater may continue to be installed where all specified components of that system are manufactured or imported prior to January 1, 2025.

— ecfr.gov, retrieved 2026-08-06