Ao Smith Contact Customer Service Numbers Home» Ao» Ao Smith General: 1(414) 359-4000Alternative: P. O. Box 245008, Milwaukee, Wisconsin 53224, United States of AmericaDirections: Follow the directions to locate Ao Smith ContactLocations Near You: Find nearby locations of Ao Smith ContactAo smith water heaters customer service phone numberTelephone: 1800 103 2468Headquarters: +91 80 28011200Delhi: +91 11 40547484Kolkata: +91 33 30125994Chennai: +91 44 45104001Pune: +91 20 65118586Basic OverviewAo Smith is an American company that manufactures residential and commercial water heating systems and boilers. The industry was developed in 1874 by Charkes Jeremiah Smith. Ao Smith is known as the largest company for production and designing of heating systems. the company started its business at one location that currently leads to worldwide locations. The company offers quality systems and boilers through its registered and trade marked distribution center that locates across globe. Ao Smith is also know for bomb making during World War II.A. O. Smith corporation was launched in 1904 by Arthur Oliver Smith. head department of corporation is set-up in Milwaukee, Wisconsin, US.