M&M Carnot
Machinery ManufacturingMaryland, United States51-200 Employees
M&M Carnot is a mid-sized machinery manufacturer based in Annapolis, Maryland, and today operates as a product line within Johnson Controls. The company focuses on natural refrigeration solutions, providing systems and controls designed to be safe and environmentally responsible. Its offering centers on replacing conventional refrigerants with natural options such as ammonia- and CO2-based cycles to serve a range of applications, including industrial, recreational, and commercial settings, as well as data centers. Its customers face sustainability requirements and environmental regulations, and the company provides solutions intended to address those needs. In 2023, Johnson Controls acquired Carnot Réfrigération, and M&M Carnot now operates as a product line of Johnson Controls. It sits within the machinery manufacturing sector, supporting the design and deployment of refrigeration systems across multiple industries.