General Info

Established in 1984, K.G. Johnson Inc. is a mechanical contracting company based in Frederick, Md. It offers a wide range of plumbing and system heating, ventilation and air conditioning services. The company offers a variety of services in the new construction, renovation, commercial, residential, business and manufacturing sectors. In addition, it provides various excavation, welding, temperature control and water treatment services. K.G. Johnson Inc. has handled projects for clients, namely Food Lion, Kohl's, Heartfields, Hitachi Data Systems, Heritage Hunt Clubhouse, to name a few.