Sterling and the Sterlco® brand have a rich history, dating back to 1916. The company was founded in Milwaukee, Wisconsin with the initial focus on servicing the growing steam heating market, which evolved into offering temperature control systems for various industries, including the plastics industry, printing, packaging, medial, die casting, converting and many more. As the industry leader, Sterling provides the largest line of process heating and cooling TCU's on the market. Count on Sterling to bring you all the technologies you need to increase uptime, energy efficiency, and performance in your operation. Sterling has been an innovator in the industry for over 100 years. Most temperature control units continue to be called "Sterlcos" because when you bring such an important product to market, the name sticks.