EPA has designated enforcement of the January 1, 2026 deadlines under its Technology Transitions Rule as a low enforcement priority, providing interim relief to the HVACR sector amid ongoing regulatory revisions. In a December 22, 2025 statement, the agency clarified that enforcement will remain limited until new compliance dates are finalized through the reconsideration rulemaking process. Although the original deadlines technically remain in force, enforcement is suspended for affected equipment categories, primarily residential and light-commercial air conditioning, heat pumps, and designated refrigeration systems. Federal enforcement will shift to focus on new timelines once the rulemaking concludes. EPA retains authority to act in cases involving health or environmental risk, and any enforcement actions throughout the reconsideration period require senior-level approval.
Background
EPA's Technology Transitions Rule, established under the AIM Act, mandates phased adoption of low-global warming potential (GWP) refrigerants in HVACR systems. The final rule, published in October 2023, set installation deadlines starting January 1, 2025, for R-410A split systems and January 1, 2026, for variable refrigerant flow (VRF) and select refrigeration equipment. A December 2023 interim final rule extended installation allowances for certain pre-2025 equipment into 2026 and beyond for specified subcategories. The December 22, 2025 enforcement statement furthers this relief by lowering enforcement priority during the period of reconsideration.
Details
EPA confirmed its policy shift in both the Federal Register and the Technology Transitions Program webpage, stating deadlines remain effective but enforcement will be deprioritized during the reconsideration process. Compliance efforts will focus on the forthcoming updated timelines. Any enforcement action during this interim phase requires approval from the Office of Enforcement and Compliance Assurance.
Industry leaders noted the impact of this decision. Talbot Gee, CEO of the Heating, Air-Conditioning & Refrigeration Distributors International (HARDI), characterized the announcement as timely support for distributors and contractors. Stakeholders had repeatedly requested regulatory clarity to prevent issues such as inventory backlogs and market disruption. Leading manufacturers and trade associations-including Daikin, ACCA, and HARDI-supported eliminating installation cut-off dates for pre-2025 R-410A and VRF systems, citing the need for operational continuity and project scheduling. Conversely, commercial refrigeration interests, such as AHRI, Copeland, and Lennox, advocated maintaining the original deadlines to protect investments and ensure supply-demand stability. The sector continues to debate the balance between regulatory flexibility and the phase-down pace.
Outlook
EPA expects to issue a final rule in the second quarter of 2026, which may synchronize federal compliance deadlines with industry operational realities. Stakeholders should regularly consult the Federal Register and EPA rulemaking portal for updates. Contractors and distributors should confirm equipment manufacturing dates and maintain comprehensive documentation to reduce compliance risk during the current enforcement pause. Attention to possible state-level requirements is advised, as state provisions may differ from federal enforcement policy.
