Notices and Rulemakings

Below is a list of notices and rulemakings under all programmatic areas of the American Innovation and Manufacturing (AIM) Act of 2020. Access petitions for reconsideration and judicial review under the AIM Act.

TypeDateNameAIM Act Program AreaFederal Register Link
Proposed Rule2025-10-03Phasedown of Hydrofluorocarbons: Reconsideration of Certain Technology Transitions Regulatory RequirementsTechnology TransitionsFederal Register Link
Final Rule2025-08-26Phasedown of Hydrofluorocarbons: Review and Renewal of Eligibility for Application-Specific AllowancesAllowance Allocations and ReportingFederal Register Link
Final Rule2024-12-12Phasedown of Hydrofluorocarbons: Restrictions on the Use of HFCs Under the AIM Act in Variable Refrigerant Flow Air Conditioning SubsectorTechnology TransitionsFederal Register Link
Notice 2024-10-28Phasedown of Hydrofluorocarbons: Notice of Information Availability for Regulations Implementing the American Innovation and Manufacturing ActTechnology TransitionsFederal Register Link
Notice 2024-10-23Phasedown of Hydrofluorocarbons: Notice of 2025 Allowance Allocations for Production and Consumption of Regulated Substances Under the American Innovation and Manufacturing Act of 2020, and Notice of Final Actions Establishing Administrative ConsequencesAllowance Allocations and ReportingFederal Register Link
Final Rule2024-10-11Phasedown of Hydrofluorocarbons: Management of Certain Hydrofluorocarbons and Substitutes Management of Use and ReuseFederal Register Link
Notice2024-10-07Phasedown of Hydrofluorocarbons: Notice of Final Administrative Consequences Under the American Innovation and Manufacturing Act Affecting 2024 AllowancesAllowance Allocations and ReportingFederal Register Link
Notice2024-10-07Notice of Data Availability Relevant to Data Reported Under the American Innovation and Manufacturing Act of 2020Allowance Allocations and ReportingFederal Register Link
Proposed Rule2024-09-16Phasedown of Hydrofluorocarbons: Review and Renewal of Eligibility for Application-Specific AllowancesAllowance Allocations and ReportingFederal Register Link
Final Rule2024-09-11Phasedown of Hydrofluorocarbons: Vacated ProvisionsAllowance Allocations and ReportingFederal Register Link
Proposed Rule2024-06-26Phasedown of Hydrofluorocarbons: Restrictions on the Use of HFCs Under the AIM Act in Variable Refrigerant Flow Air Conditioning SubsectorTechnology TransitionsFederal Register Link
Notice2024-01-17Notice of Data Availability Relevant to Data Reported Under the American Innovation and Manufacturing Act of 2020Allowance Allocations and ReportingFederal Register Link
Interim Final Rule2023-12-26Phasedown of Hydrofluorocarbons: Technology Transitions Program Residential and Light Commercial Air Conditioning and Heat Pump SubsectorTechnology TransitionsFederal Register Link
Final Rule2023-10-24Phasedown of Hydrofluorocarbons: Restrictions on the Use of Certain Hydrofluorocarbons Under the American Innovation and Manufacturing Act of 2020Technology TransitionsFederal Register Link
Proposed Rule2023-10-19Phasedown of Hydrofluorocarbons: Management of Certain Hydrofluorocarbons and Substitutes Under Subsection (h) of the American Innovation and Manufacturing Act of 2020Management of Use and ReuseFederal Register Link
Notice2023-10-19Phasedown of Hydrofluorocarbons: Notice of 2024 Allowance Allocations for Production and Consumption of Regulated Substances Under the American Innovation and Manufacturing Act of 2020, and Notice of Final Administrative ConsequencesAllowance Allocations and ReportingFederal Register Link
Final Rule2023-07-20Phasedown of Hydrofluorocarbons: Allowance Allocation Methodology for 2024 and Later YearsAllowance Allocations and ReportingFederal Register Link
Final Rule2023-07-12Phasedown of Hydrofluorocarbons: Adjustment to the Hydrofluorocarbon Production BaselineAllowance Allocations and ReportingFederal Register Link
Notice2023-04-11Notice of Determination to Deny Certain Petitions Submitted under Subsection (i) of the American Innovation and Manufacturing ActTechnology TransitionsFederal Register Link
Proposed Rule2022-12-15Restrictions on the Use of Certain Hydrofluorocarbons under Subsection (i) of the American Innovation and Manufacturing ActTechnology TransitionsFederal Register Link
Proposed Rule2022-11-03Phasedown of Hydrofluorocarbons: Allowance Allocation Methodology for 2024 and Later YearsAllowance Allocations and ReportingFederal Register Link
Notice2022-10-17Data Availability: Management of Regulated Substances under the American Innovation and Manufacturing ActManagement of Use and ReuseFederal Register Link
Notice2022-10-11Phasedown of Hydrofluorocarbons: Notice of 2023 Allowance Allocations for Production and Consumption of Regulated Substances Under the American Innovation and Manufacturing Act of 2020Allowance Allocations and ReportingFederal Register Link
Notice2022-10-04Notice of Determination: Petitions Granted Under Subsection (i) of the American Innovation and Manufacturing Act of 2020Technology TransitionsFederal Register Link
Notice2022-09-22Phasedown of Hydrofluorocarbons: Notice of Grant of Request To Extend Compliance Date for Requirements To Control Emissions of Hydrofluorocarbon-23Allowance Allocations and ReportingFederal Register Link
Proposed Rule2022-06-21Revisions and Confidentiality Determinations for Data Elements under the Greenhouse Gas Reporting RuleAllowance Allocations and ReportingFederal Register Link
Proposed Rule2022-06-16Protection of Stratospheric Ozone: Standards Related to the Manufacture of Class II Ozone-Depleting Substances for Feedstock; WithdrawalAllowance Allocations and ReportingFederal Register Link
Notice2022-04-05Phasedown of Hydrofluorocarbons: 2022 Set-Aside Pool Allowance Allocations for Production and Consumption of Regulated Substances under the American Innovation and Manufacturing ActAllowance Allocations and ReportingFederal Register Link
Notice2021-12-29Consideration of Negotiated Rulemaking for Petitions Granted or Partially Granted Under Subsection (i) of the American Innovation and Manufacturing Act of 2020Technology TransitionsFederal Register Link
Notice2021-10-14Notice of Determination To Grant or Partially Grant Certain Petitions Submitted Under Subsection (i) of the American Innovation and Manufacturing Act of 2020Technology TransitionsFederal Register Link
Notice2021-10-07Phasedown of Hydrofluorocarbons: Notice of 2022 Allowance Allocations for Production and Consumption of Regulated Substances Under the American Innovation and Manufacturing Act of 2020Allowance Allocations and ReportingFederal Register Link
Final Rule2021-10-05Phasedown of Hydrofluorocarbons: Establishing the Allowance Allocation and Trading Program Under the American Innovation and Manufacturing ActAllowance Allocations and ReportingFederal Register Link
Proposed Rule2021-09-29Protection of Stratospheric Ozone: Standards Related to the Manufacture of Class II Ozone-Depleting Substances for FeedstockAllowance Allocations and ReportingFederal Register Link
Notice2021-05-25Notice of Data Availability Relevant To Petition Submissions Under the American Innovation and Manufacturing Act of 2020Allowance Allocations and ReportingFederal Register Link
Proposed Rule2021-05-19Phasedown of Hydrofluorocarbons: Establishing the Allowance Allocation and Trading Program under the American Innovation and Manufacturing ActAllowance Allocations and ReportingFederal Register Link
Notice2021-02-11Data Availability Relevant to the United States Hydrofluorocarbon Baselines and Mandatory AllocationsAllowance Allocations and ReportingFederal Register Link

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Last updated on February 4, 2026