On August 26, 2025, the EPA published a final rule that continues to implement the phasedown provisions under the American Innovation and Manufacturing (AIM) Act of 2020. The AIM Act identifies six applications that are to receive "the full quantity of [HFC] allowances necessary, based on projected, current, and historical trends" under the allowance allocation program through the end of 2025. The six applications are a propellant in metered dose inhalers, defense sprays, structural composite preformed polyurethane foam for marine use and trailer use, the etching of semiconductor material or wafers and the cleaning of chemical vapor deposition chambers within the semiconductor manufacturing sector, mission-critical military end uses, and onboard aerospace fire suppression. The final rule established renewal decisions for each of the six applications, consistent with the statutory process under AIM subsection (e)(4)(B). Additionally, the EPA established procedures and the timeline for submitting a petition to designate an application as eligible for ASAs, made targeted revisions to the methodology used to allocate allowances to ASA holders for calendar years 2026 and beyond, and made limited revisions to existing requirements.