# Motor vehicle air-conditioning — US AIM Act sector-specific refrigerant GWP limits and compliance dates (40 CFR 84.54)

For Motor vehicle air-conditioning, restriction type is manufacture/import; maximum gwp is 150; effective date is October 24, 2024; conditions is for Model Year 2025 and subsequent model year light-duty passenger cars and trucks (vehicles with a gross vehicle weight rating less than 8,500 lb); cfr paragraph is § 84.54(a)(13)(i), recorded from its source on 2026-08-06.

- **Sector/subsector:** Motor vehicle air-conditioning _(verified: appears in the quote below)_
- **Restriction type:** manufacture/import _(our reading, not quoted from the source)_
- **Maximum GWP:** 150 _(verified: appears in the quote below)_
- **Effective date:** October 24, 2024 _(verified: appears in the quote below)_
- **Conditions:** for Model Year 2025 and subsequent model year light-duty passenger cars and trucks (vehicles with a gross vehicle weight rating less than 8,500 lb) _(verified: appears in the quote below)_
- **CFR paragraph:** § 84.54(a)(13)(i) _(our reading, not quoted from the source)_

## What the source says

> ( 13 ) Motor vehicle air-conditioning as follows: ( i ) Effective October 24, 2024, for Model Year 2025 and subsequent model year light-duty passenger cars and trucks (vehicles with a gross vehicle weight rating less than 8,500 lb) using or intended to use a regulated substance, or a blend containing a regulated substance, with a global warming potential of 150 or greater;

## Source

- https://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-84

Last verified: 2026-08-06. Review by: 2027-02-02.
Part of [US AIM Act sector-specific refrigerant GWP limits and compliance dates (40 CFR 84.54)](https://referencesource.org/aim-act-refrigerant-gwp-sector-limits/).