A.O. Smith

America`s largest water heater manufacturer, A. O. Smith brings more than 150 years of history, innovation and American manufacturing expertise to developing industry-leading, high-efficiency water heating products that are designed, engineered and assembled in the U.S. From creating the industry standard glass lining in 1933, to introducing the first 95% energy efficient water heater in 1986, A. O. Smith has continuously led the water heating industry with a tradition of innovation for almost a century. Today the multi-generational, family-founded business offers a wide range of water heaters – from standard gas and electric water heaters to high efficiency heat pump and tankless models – to meet each home`s unique water heating needs.