A. O. Smith Hot Water
A. O. Smith's water heating brand offering residential and commercial water heaters, boilers, and storage tanks.
Last updated September 11, 2026
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Overview
A. O. Smith Hot Water is the water heating brand of A. O. Smith Corporation, described on its official site as one of the world's leading manufacturers of residential and commercial water heaters. The brand's product range includes residential and commercial gas and electric tank water heaters, tankless models, boilers, and storage tanks. A. O. Smith produced its first residential water heater in 1939 and shipped its first commercial water heater with a glass-lined tank in 1953. The Cyclone® HE commercial gas water heaters were introduced in 1997, and the Cyclone® Flex™ is a newer high-efficiency commercial water heater. The company employs approximately 15,000 people at operations around the world.
History
A. O. Smith produced its first residential water heater in 1939. In 1953, it shipped its first commercial water heater equipped with a glass-lined tank. In 1997, the Cyclone® HE commercial gas water heaters were introduced. In 2004, A. O. Smith introduced patented Blue Diamond™ glass coating on its best Conservationist® residential water heaters. The company has been committed to delivering innovative solutions for nearly 150 years, and has delivered hot water solutions for over 85 years.
Products and positioning
A. O. Smith is described as a leader in water heating and water treatment solutions, and a leading manufacturer of residential and commercial water heating technologies.
Cyclone® Flex™ High Efficiency Commercial Water Heater
A high-efficiency commercial water heater recognized as a gold winner in the Plumbing & Water Systems category of Consulting-Specifying Engineer's 2026 Product of the Year.
Adapt® Gas Tankless
A gas tankless water heater built to perform, adapt, and last.
ProLine® Water Heaters
A family of water heaters from A. O. Smith.
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