Residential Water Heaters
Replace your home’s old, inefficient water heater with an A. O. Smith ENERGY STAR® Certified model. Choose a gas or electric tank or tankless, hybrid heat pump, or combi boiler to enjoy a steady supply of hot water whenever you need it. Use our convenient Product Selector Tool to choose the right product for your home.
Shop by Residential Water Heater Type
ADAPT ABILITY
Ultra Flexible. Fewer Trips. More Savings.
Introducing the new Adapt™ Premium Condensing Gas Tankless Water Heaters with X3® Scale Prevention Technology.
Product Comparison
*Many factors affect the actual performance of a water heater. This represents our closest approximation of your likely experience with this water heater in your local area, but actual performance may vary depending on factors beyond our ability to control or estimate.
Shop by Capacity
30-39 Gallons
40-49 Gallons
50-74 Gallons
Pressure Tanks
Parts & Accessories
Water Heater Resources
Interactive tools, product manuals, warranty information, the A. O. Smith mobile app, and more.
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?
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.