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Residential Water Heating

A. O. Smith manufactures ENERGY STAR® certified water heaters, including pressure tanks, parts and accessories to ensure you have a steady supply of hot water when you need it. Choose a gas or electric, tank or tankless, hybrid heat pump, or combi boiler by using our convenient Product Selector Tool to choose the right product for your home.

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ADAPT ABILITY

Ultra Flexible. Fewer Trips. More Savings.


Introducing the new Adapt™ Premium Condensing Gas Tankless Water Heaters with X3® Scale Prevention Technology.

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Pressure Tanks

Protect your closed loop system with a pressure tank.

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Parts & Accessories

Find all the parts and accessories for your water heater.

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Water Heater Resources

Interactive tools, product manuals, warranty information, the A. O. Smith mobile app, and more.

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Not sure which product is right for you?

Take our water heater selector quiz to find the correct water heater for your home.

Why A. O. Smith?

 
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Market Leader

A. O. Smith is a leading manufacturer of both residential and commercial water heating technologies, including the #1 most specified commercial water heater.

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Commitment to Innovation

For more than 145 years, we’ve developed state-of-the art products that push new boundaries and improve the lives of our customers.

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Best-In-Class Support

We combine cutting-edge technology with committed people who take pride in providing the very best support for our customers.

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Unmatched Quality

Our products are put through rigorous quality and endurance testing so now matter where hot water is needed, A. O. Smith can provide a solution you can count on.