A O Smith Corp — A. O. Smith Corporation manufactures and markets residential and commercial gas and electric water heaters, boilers, heat pumps, tanks, and water treatment products in North America, China, Europe, and India. The company offers water heaters for residences, restaurants, hotels, office buildings, laundries, car washes, and small businesses; boilers for hospitals, schools, hotels, homes, apartments, and condominiums, and other large commercial buildings; and water treatment products comprising point-of-entry water softeners, well water solutions, and whole-home water filtration products, and poi….· via yahoo