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.
A. O. Smith Receives 2025 Silver Edison Award for Sustainable Consumer Product Innovation Learn More >
Residential Water Heaters
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Rebates & Tax Credits
Rebate and incentive programs provide savings to consumers for the purchase of water heaters that meet certain energy efficiency standards.
When filing a federal tax return, include A. O. Smith's Qualified Manufacturer Code A5X5 on tax form 5695.
Need Help From A Pro?
A. O. Smith water heaters are professionally installed by local independent contractors.
X3® Scale Prevention Technology
Prevent scale build-up to reduce regular maintenance and extend the life of your water heater by up to 300%.
Pressure Tanks
Parts & Accessories
Water Heater Resources
Interactive tools, product manuals, warranty information, the A. O. Smith mobile app, and more.
Water Heater Selector Quiz
Why A. O. Smith?
A. O. Smith is a leading manufacturer of both residential and commercial water heating technologies, including the #1 most specified commercial water heater.
For more than 145 years, we’ve developed state-of-the art products that push new boundaries and improve the lives of our customers.
We combine cutting-edge technology with committed people who take pride in providing the very best support for our customers.
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.