M. S. Johnston is a leading mechanical and refrigeration contractor based in Hagerstown, MD.

With over 80 years of experience, they have established themselves as the longest-tenured York dealer in the world. The company offers a wide range of products and services to meet the needs of their customers. Their HVAC division specializes in commercial, industrial, and institutional design/build, installation, and service.

They also provide expertise in green building HVAC systems, offering energy-saving solutions for air, water, and geothermal HVAC projects. In addition to HVAC, M. S.

Johnston excels in the refrigeration industry. Their team is skilled in designing, selling, installing, and servicing refrigerated cases and compressor racks. Furthermore, M.

S. Johnston is a reliable partner in the food service industry, offering design and installation services for food service equipment. They create unique and efficient designs for supermarkets, schools, nursing homes, food chains, and private restaurants and markets.

M. S. Johnston prides itself on building and sustaining relationships with customers, suppliers, and professional groups.

Their team of experts values each association, ensuring exceptional service and satisfaction. Trust M. S.

Johnston for all your mechanical and refrigeration needs