Midwestern Mechanical offers plumbing, heating and fire protection contracting services. The contracting firm serves a four state area from its offices in Sioux Fall, S.D., and Spencer, Iowa. It employs more than 80 tradesmen, many of whom have been with the company since it was established in 1983. The company s service vans are stocked with tools and materials, which eliminates costly, time-consuming trips to the shop or wholesale house. Serving commercial and residential customers, Midwestern Mechanical offers emergency service 24-hours a day for plumbing, hot water heater or fire sprinkler systems.