# 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 January 1, 2028; conditions is certain nonroad vehicles (agricultural tractors greater than 40 horsepower; self-propelled agricultural machinery; compact equipment; construction, forestry, and mining equipment; and commercial utility vehicles); cfr paragraph is § 84.54(a)(13)(iii), recorded from its source on 2026-08-06.

- **Sector/subsector:** Motor vehicle air-conditioning
- **Restriction type:** manufacture/import _(our reading, not quoted from the source)_
- **Maximum GWP:** 150 _(verified: appears in the quote below)_
- **Effective date:** January 1, 2028 _(verified: appears in the quote below)_
- **Conditions:** certain nonroad vehicles (agricultural tractors greater than 40 horsepower; self-propelled agricultural machinery; compact equipment; construction, forestry, and mining equipment; and commercial utility vehicles) _(verified: appears in the quote below)_
- **CFR paragraph:** § 84.54(a)(13)(iii) _(our reading, not quoted from the source)_

## What the source says

> ( iii ) Effective January 1, 2028, certain nonroad vehicles (agricultural tractors greater than 40 horsepower; self-propelled agricultural machinery; compact equipment; construction, forestry, and mining equipment; and commercial utility vehicles) 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/).