The resulting transition to low GWP refrigerants impacts all HVAC manufacturers selling within or importing to the United States. Under the AIM rules:
- The deadline for the manufacture and import of single- phase, <65 KBTU/H, R-410A systems is December 31, 2024, and the deadline for sales and installation of single- phase, <65 KBTU/H, R-410A systems is December 31, 2025.
- The deadline for the manufacture and import, of three- phase, >65 KBTU/H, R-410A systems is December 31, 2025, and the deadline for sales and installation of three- phase, >65 KBTU/H, R-410A systems is December 31, 2026.
After evaluation, Mitsubishi Electric Trane HVAC US LLC (METUS) and its HVAC supplier, Mitsubishi Electric, have determined that R-32 refrigerant is the most suitable choice for its CITY MULTI® VRF systems. Mitsubishi Electric builds and tests their entire system of components. Utilizing R-32 offers advantages over alternate refrigerants for VRF applications, especially those applications requiring larger volumes of refrigerant due to greater tonnage capacity and extended line lengths characteristic of large commercial equipment. R-32 delivers excellent performance under these conditions and supports an improved market launch timing for our customers.
Building on its current success, Mitsubishi Electric leverages its extensive experience with R-32 products, which have been successfully utilized in countries outside the United States for over ten years. With Mitsubishi Electric’s track record of delivering high reliability products paired with the R-32 refrigerant, METUS anticipates meeting consumer expectations while expediting the product development cycle within the United States.
Mitsubishi Electric three-phase, >65 KBTU/H systems containing R-410A refrigerant will continue to be manufactured and imported until December 31, 2025. These systems will be able to be sold in the US © 2024 Mitsubishi Electric Trane HVAC US LLC This message contains confidential, proprietary or trade secret information of Mitsubishi Electric Trane HVAC US LLC. No confidentiality or trade secret status is waived or lost by any error in transmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. If you are not the intended recipient, please do not use, disclose, distribute, print or copy any part of this message. through 2026, with start-up and refrigerant charging completed by December 31, 2026. Mitsubishi Electric systems utilizing R-32 will begin arriving in the US in late 2025. This progression will enable METUS to maintain stock of both R-410A and R-32 models during the transition period.
It is METUS’ continued commitment to collaborate with its customers through this transition, to keep them apprised of any changes to our transition plan, and to safeguard their investments and the future comfort of their buildings and occupants.
Please contact your METUS Area Manager for any additional information.
