M.S. JOHNSTON COMPANY - HVAC – Air Conditioning – Food Service Equipment

Contact Us


Do you have a question about M.S. Johnston, our company, products or services? We welcome your inquiries and invite you to call us at 301-733-1066 or use our contact form.

HVAC Division

13261 Pennsylvania Avenue Hagerstown, MD 21742
Tel: 301-733-1066 | Fax: 301-797-9675


Food Service Division

13265 Pennsylvania Avenue Hagerstown, MD 21742
Tel: 301-733-1075 | Fax: 301-665-1885


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M.S. JOHNSTON COMPANY © 2021