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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.

*When filing a federal tax return, include A. O. Smith's Qualified Manufacturer Code A5X5 on tax form 5695.

A. O. Smith Receives 2025 Silver Edison Award for Sustainable Consumer Product Innovation Learn More >

The new Adapt premium gas tankless hot water heater image made to look like a swiss army knife

X3® Scale Prevention Technology

Prevent scale build-up to reduce regular maintenance and extend the life of your water heater by up to 300%.

Rebates & Tax Credits

Rebate and incentive programs provide consumers with savings on 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.

Product Comparison

Pressure Tanks

Protect your closed loop system with a pressure tank.

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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Water Heater Selector Quiz

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