Founded in 1874, A.O. Smith Corporation is an industry leader in commercial water heaters and boilers. The parent company of brands like American Water Heaters, GSW, U.S. Craftmaster, and more, A.O. Smith has a long line of solutions for high-efficiency water heating products. Whether it's boosting a warewashing system with in-line hot water or another application, A.O. Smith has a product for the job.