A. O. Smith

Founded in 1874, AO Smith Corporation is a manufacturer of residential and commercial water heaters and electric motors. Its Electrical Products division manufactures pump motors for home water systems, swimming pools and hot tubs, as well as fan motors for furnaces and air conditioners, and hermetic motors for compressors and commercial refrigeration units. The company's Water division makes residential gas and electric water heaters and commercial water heating systems. The company is headquartered in Milwaukee, Wisconsin with operations in the US, Canada, China, Europe, India, Mexico, and Turkey.