M&M Carnot designs, manufactures, builds, and services industrial and commercial refrigeration systems and controls. Founded in 1969, the company says it has commissioned thousands of refrigeration solutions worldwide and has specialized in natural-refrigerant refrigeration, including ammonia and CO2 systems. M&M Carnot is now a product line of Johnson Controls.
ATMO Approved
Compliance program
CIMCO RefrigerationCIMCO Refrigeration traces its roots to 1913, when Thomas Shipley founded the Canadian Ice Machine Co.; the company took the CIMCO Refrigeration name in 1967 and joined Toromont Industries two years later. Now numbering more than 1,200 employees, CIMCO is best known for its long-standing role in ice-rink construction and for advancing natural-refrigerant thermal systems across North America. Its Burlington headquarters includes a 55,600-square-foot manufacturing facility opened in 2022, marking the company’s 110th anniversary.LANCASTER, PA
Industrial Refrigeration Service, IncBorn at the Nechay family’s kitchen table in 1978, Industrial Refrigeration Service designs, fabricates, installs, and maintains industrial ammonia refrigeration and process-piping systems. From its 30,000-square-foot Maryland facility, the company serves cold-storage and food-processing operations with custom-built systems and 24/7 emergency service. The Nechay family continues to uphold founder Rudy Nechay’s family-business approach, while the company’s 24,000-square-foot fabrication shop brings much of the work in-house.MIDDLE RIVER, MD
JJ Crewe & Son, IncFor more than 100 years and four generations, J.J. Crewe & Son, Inc. has engineered and fabricated gas compression and industrial refrigeration systems from its Maryland-area operation. The OEM shop builds packaged equipment for compressor manufacturers including Sullair, Aerzen, Howden and Knox Western, while also providing service and engineering support for its own and other manufacturers’ equipment. Its process-engineering background lets Crewe jointly specify, shop-fabricate and test skid-mounted systems before delivery.BUCKEYSTOWN, MD
YORK®For more than 150 years, YORK® has manufactured commercial HVAC systems that heat, cool and manage air in demanding buildings, including mission-critical data centers. As part of Johnson Controls, YORK pairs equipment such as chillers and air handling systems with lifecycle service, connected analytics and technical support, while its patented hybrid falling-film technology can reduce refrigerant use by at least 20% compared with flooded evaporators. The company also produces portable IsoClean HEPA air-cleaning systems for larger indoor spaces.YORK, PA