McDonough Mechanical Services, Inc.

McDonough Mechanical Services, known as MMS Cold, is a refrigeration contractor focused on industrial refrigeration, especially ammonia systems. Its work includes installing and servicing compressors, piping, freezers and plant renovations, along with preventive maintenance, process safety management and risk management program audits, mechanical integrity inspections, and P&ID generation and plant design. Recent projects described on the site include a 120 ton compressor installation at a food distribution center and an emergency piping replacement after a high side leak at a main plant.

The company services equipment from many manufacturers, including Frick, Vilter, Mycom and GEA. Its staff is available around the clock for refrigeration needs, and the team includes a six-person hazmat group trained to the technician level for ammonia response. MMS is a member of IIAR, RETA and ASHRAE. The office is on Granary Road in Forest Hill, Maryland, and the company serves clients across Maryland.