WJ Oneil Co, 35457 Industrial Rd, Livonia, MI 48150, US

Established in 1936 as a rural farm and residential contractor, Dunbar Mechanical has grown to be one of the 100 largest mechanical contractors in the United States. Dunbar's solid operational, financial and managerial positions are enhanced by its status as a family-operated, wholly owned subsidiary of FirstEnergy. The company s products and services include piping systems of all types, such as carbon steel, stainless steel, fiberglass, plastic and exotic metals for both process and utility applications; a variety of other piping, such as aseptic piping, process piping, ammonia/refrigerant piping and utility piping; heating, ventilation and air conditioning; plumbing; certified medical gasses; machinery moving/equipment setting/rigging; conveyor installation; light structural fabrication and erection; boiler installation; mechanical systems maintenance; facility automation and controls; design/build; and design/assist. Dunbar Mechanical is headquartered in Toledo, Ohio.

Blue Design

Comfort Zone Mechanical