California Air Resources Board

The California Air Resources Board (CARB or Board) is soliciting feedback to help inform its work to implement Senate Bill (SB) 905 (Caballero, Statutes of 2022). This pre-rulemaking solicitation step allows CARB to gather important information, from a wide range of stakeholders, relating to developing approaches to implementation. 

CARB is conducting this solicitation step to gather information that will aid in implementing SB 905:

• The solicitation for feedback on the questions below will be open for 45 days (closing Monday, October 6, 2025)
• We also welcome any additional feedback that respondents feel is important for staff to consider regarding the implementation of SB 905.
• In responding to the questions below, it is most helpful to staff if respondents reference the question number with their response.
• Submittals will be publicly posted for transparency. 

Please refer to our list of questions here.

Please submit your comments to the to August 21, 2025 Climate Disclosure Workshop.

Variance Applicant: Arrowhead Products (Arrowhead)

The California Air Resources Board (CARB) invites interested parties to submit comments on Arrowhead's application for a variance. All comments will be publicly accessible via this docket to support an inclusive and transparent process. 

Arrowhead submitted an application, pursuant to section 95378 of the HFC Regulation, for a variance from the requirements of section 95374(b). Specifically, section 95374(b) prohibits the use HFC-245fa in rigid polyuerthane low-pressure two component spray foams, effective January 1, 2020. Arrowhead is requesting an impossibility variance to continue the use of HFC-245fa, until January 1, 2036. 

A copy of the variance application is available on CARB’s website at https://ww2.arb.ca.gov/our-work/programs/variances. Please contact the HFC team if you have any questions or concerns: HFCReduction@arb.ca.gov. 

Variance Applicant: ALTA Refrigeration, Inc. (ALTA)

The California Air Resources Board (CARB) invites interested parties to submit comments on ALTA's application for a variance. All comments will be publicly accessible via this docket to support an inclusive and transparent process. 

ALTA submitted an application, pursuant to section 95378 of the HFC Regulation, for a variance from the requirements of section 95374(c). Specifically, section 95374(c) prohibits the use of HFCs with a GWP of 150 or greater in new refrigeration equipment in cold storage warehouses, beginning January 1, 2022. ALTA is requesting an impossibility variance to continue the use of R-513A which has a GWP greater than 150, until January 1, 2027. 

A copy of the variance application is available on CARB’s website at https://ww2.arb.ca.gov/our-work/programs/variances. Please contact the HFC team if you have any questions or concerns: HFCReduction@arb.ca.gov. 

Stuff we talk about

Under the California Public Records Act (Gov. Code § 6250 et seq.), your written and verbal comments, attachments, and associated contact information (e.g., your address, phone, email, etc.) become part of the public record and can be released to the public upon request. 

In response to illegal federal efforts to revoke California’s clean air waivers, Governor Gavin Newsom signed an executive order on June 12, 2025. The order directed the California Air Resources Board, the California Energy Commission, Governor’s Office of Business and Economic Development, California State Transportation Agency, and Department of Consumer Affairs to assess additional actions to spur light-, medium-, and heavy-duty zero emission vehicle (ZEV) adoption in California, and to deliver formal recommendations for additional actions to the governor in August. 

The agencies above are jointly hosting three Public Dialogue sessions to discuss proposed measures to support increased zero emission vehicle adoption in California. Public Comments to these sessions can be submitted using the form below:

Variance Applicant: AboveAir Technologies, LLC (AboveAir) 

The California Air Resources Board (CARB) invites interested parties to submit comments on AboveAir's application for a variance. All comments will be publicly accessible via this docket to support an inclusive and transparent process. 

AboveAir submitted an application, pursuant to section 95378 of the HFC Regulation, for a variance from the requirements of section 95374(c). Specifically, section 95374(c) prohibits the use of HFCs with a GWP of 750 or greater in new other air-conditioning equipment. AboveAir is requesting an impossibility variance until January 2027. 

A copy of the variance application is available on CARB’s website at https://ww2.arb.ca.gov/our-work/programs/california-significant-new-alternatives-policy-snap/variances/applications. Please contact the HFC team if you have any questions or concerns: HFCReduction@arb.ca.gov. 

Please submit comments responsive to the July 18, 2025, Community Meeting on the form below.

Variance Applicant: Stulz Air Technology Systems Inc. (Stulz) 

The California Air Resources Board (CARB) invites interested parties to submit comments on Stulz's application for a variance. All comments will be publicly accessible via this docket to support an inclusive and transparent process. 

Stulz submitted an application, pursuant to section 95378 of the HFC Regulation, for a variance from the requirements of section 95374(c). Specifically, section 95374(c) prohibits the use of HFCs with a GWP of 750 or greater in new other air-conditioning equipment. Stulz is requesting an impossibility variance until January 2027. 

A copy of the variance application is available on CARB’s website at https://ww2.arb.ca.gov/our-work/programs/california-significant-new-alternatives-policy-snap/variances/applications. Please contact the HFC team if you have any questions or concerns: HFCReduction@arb.ca.gov.