From subfractional horsepower motors the size of a cassette tape to 800-horsepower integral motors, A.O. Smith Corporation makes more than 35 million motors every year. The company makes many of the motors found in household items, such as air conditioners, refrigerators, microwave ovens, garage door openers, automatic security gates, swimming pools and spas. The company is also a leading manufacturer of water heaters. In fact, it invented the glass-lined water heater in 1936. The company s line of water products includes gas and electric residential and commercial water heaters, expansion tanks, pump tanks and storage tanks. With its headquarters in Milwaukee, A.O. Smith has facilities throughout North America, Europe and Asia. It trades on the New York Stock Exchange under the symbol AOS.