Michigan Automotive Compressor
MACI manufactures automotive air conditioning compressors and magnetic clutches in Jackson County, Michigan, and is expanding into electric compressor production.
Michigan Automotive Compressor, Inc. (MACI) manufactures automotive air conditioning compressors and magnetic clutches, and holds the largest market share in North America for both product lines. Founded in 1989, with production beginning in June 1990, the company operates from Jackson County, Michigan, where it is the largest manufacturer. It is a joint venture owned by Toyota Industries Corporation (60%) and DENSO (40%), and draws on Japanese manufacturing techniques developed by its parent companies.
Production spans compressor and magnetic clutch manufacturing alongside assembly operations. In a recent move reflecting the automotive industry's transition toward electrification, MACI has expanded into electric compressor (ERA) manufacturing, launching night shift operations in August 2025 covering e-finishing, e-machining, and assembly. The company operates within the automotive components supply chain and the emerging electric vehicle segment, with a geographic presence spanning North America and links to Japan through its owners.
The workforce is described as highly skilled, with an emphasis on teamwork, quality, and continuous training to develop associates' skills alongside advances in modern technology. Roles are concentrated in manufacturing operations, and the company positions itself as evolving in step with the industry's shift toward vehicle electrification.