Industry Update: The Transition to Low-GWP Refrigerants Accelerates

As the HVAC industry continues its shift toward more sustainable practices, 2025 marks a pivotal year in the nationwide transition to low-global-warming-potential (GWP) refrigerants. Driven by environmental regulations, technological innovation, and evolving client expectations, the move away from legacy HFCs like R-410A and R-134a is well underway.

The U.S. Environmental Protection Agency’s AIM Act (American Innovation and Manufacturing Act) mandates an 85% phasedown in the production and consumption of HFCs by 2036, with steep cuts already scheduled through 2029. In response, equipment manufacturers have accelerated the rollout of systems designed to operate with next-generation refrigerants such as R-32, R-454B, and R-513A—each offering significantly lower GWP values while maintaining high energy performance.

However, this transition is not without complexity. Many of the new refrigerants are mildly flammable (classified as A2L), requiring updates to mechanical codes, additional technician training, and careful attention to storage, handling, and system design. State and local adoption of ASHRAE Standard 15 and UL 60335-2-40 is helping to pave the way, though market readiness varies by region.

For building owners and facility managers, the key takeaway is clear: proactive planning is critical. While most existing HVAC systems are not candidates for retrofit, capital planning for equipment nearing end-of-life should now factor in refrigerant availability, compliance requirements, and long-term serviceability.

As this industry-wide transition accelerates, professionals across the HVAC ecosystem must navigate a evolving landscape of product specifications, safety codes, and evolving design standards. The move to climate-conscious refrigerants is also reshaping equipment strategies and technician qualification requirements—underscoring the need for cross-disciplinary coordination and forward-looking planning.

At Sander Mechanical, we are closely monitoring these regulatory and technical developments. Our service and construction teams are preparing for the shift by updating training protocols, working with OEMs, and advising clients on next-generation refrigerant readiness in both design-build and retrofit applications. We are also actively collaborating with commercial property managers, engineering consultants, and environmental compliance teams to ensure alignment with emerging standards and long-term operating requirements.

Have questions about low-GWP refrigerants or how upcoming regulations may impact your facility? Contact us for guidance.