U.S. EPA AIM Act Rule Takes Effect: R-410A Phased Out of New Residential HVAC Equipment

Effective January 1, 2025, U.S. manufacturers can no longer build new residential HVAC equipment using R-410A, driving the shift to A2L refrigerants R-454B (Puron Advance) and R-32.
— Source: Carrier · 2025-01-01 · https://www.carrier.com/us/en/residential/homeowner-resources/puron-advance/