Forest Hill, MD
McDonough Mechanical Services, Inc.
McDonough Mechanical Services (MMS) is an industrial refrigeration specialist at 343 Granary Rd., Unit D, Forest Hill, MD 21050. Its site documents industrial refrigeration installation and service, ammonia systems, preventive maintenance, PSM and RMP third-party audits, mechanical integrity inspections, P&ID generation, compressor service, and a hazmat team trained at the technician level for ammonia response. The cited page does not publish a 24/7 claim.