# chillers for industrial process refrigeration — US AIM Act sector-specific refrigerant GWP limits and compliance dates (40 CFR 84.54)

For chillers for industrial process refrigeration, restriction type is manufacture/import; maximum gwp is 700; effective date is January 1, 2028; conditions is where the temperature of the fluid exiting the chiller is greater than or equal to −50 °C (−58 °F) and less than or equal to −30 °C (−22 °F); cfr paragraph is § 84.54(a)(10)(iv), recorded from its source on 2026-08-06.

- **Sector/subsector:** chillers for industrial process refrigeration _(verified: appears in the quote below)_
- **Restriction type:** manufacture/import _(our reading, not quoted from the source)_
- **Maximum GWP:** 700 _(verified: appears in the quote below)_
- **Effective date:** January 1, 2028 _(verified: appears in the quote below)_
- **Conditions:** where the temperature of the fluid exiting the chiller is greater than or equal to −50 °C (−58 °F) and less than or equal to −30 °C (−22 °F) _(verified: appears in the quote below)_
- **CFR paragraph:** § 84.54(a)(10)(iv) _(our reading, not quoted from the source)_

## What the source says

> ( iv ) Effective January 1, 2028, chillers for industrial process refrigeration where the temperature of the fluid exiting the chiller is greater than or equal to −50 °C (−58 °F) and less than or equal to −30 °C (−22 °F) using a regulated substance, or a blend containing a regulated substance, with a global warming potential of 700 or greater; and

## 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/).