Smith electric water heater, namely A.O. Smith electric water heater, is a well-known American water heater brand. A.O. Smith, founded in 1874, is a multinational company with a glorious history of one hundred years. Relying on leading technology, high-quality products and perfect service, it has become the largest manufacturer of water heaters in North America, and is a listed company on the New York Stock Exchange (code AOS).