residential or light commercial air-conditioning or heat pump systems
For residential or light commercial air-conditioning or heat pump systems, restriction type is installation; 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.
- Sector/subsector
- residential or light commercial air-conditioning or heat pump systems verified
- Restriction type
- installation our reading
- Maximum GWP
- 700 verified
- Effective date
- January 1, 2025 verified
- Conditions
- may continue to be installed where all specified components of that system are manufactured or imported prior to January 1, 2025 verified
- Exemptions
- except for variable refrigerant flow air-conditioning and heat pump systems verified
- CFR paragraph
- § 84.54(c)(1) our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
( 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
Source
- ecfr.govhttps://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-84