A. O. Smith is the largest manufacturer in North America, and one of the world’s leading manufacturers of residential and commercial water heating equipment, offering a comprehensive product line and featuring the best-know brands in North America and China. Through an inspired blend of innovation, teamwork, technology and industry expertise, A. O. Smith has created a full line of state-of-the-art water heaters and boilers that combine incredible performance with higher-than-ever energy efficiency. A. O. Smith is a global leader applying innovative technology and energy-efficient solutions to products marketed worldwide. A. O. Smith is also one of the largest manufacturers of electric motors of residential and commercial applications in North America.