Electric Tank Water Heaters

Dependable hot water for when you need it most.

An industry leader in water heater innovation, A. O. Smith electric tank water heaters are built with commercial-grade components for increased durability and reliability. All of our electric tank residential products have been thoroughly tested in our labs to help ensure long-lasting performance—giving you and your family peace of mind.


Up to $850 in Local Utility Rebates
may be available in your area!

Save BIG by switching to a qualified water heater today.

Check with your tax advisor for applicabiity. Local utility rebates available in limited geographical areas.
See Rebate Center for details.

*For information on the Federal Tax Credit, go to: energystar.gov. Check with your tax advisor for applicability. Offer details and expiration may vary.

Benefits of Electric Tank Water Heaters

  • Children washing hands.

    Easy Installation

    Electric tank water heaters are quick and easy to install for any home when replacing a similar model with the same electric power needs. A. O. Smith strongly recommends that you consult a professional installer for a speedy and proper installation.

  • Filling a glass of water.

    Hot Water Storage Supply

    Tank water heaters store a supply of hot water, making it available when you need it most.

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    Long Lasting

    A. O. Smith water heaters are built to last with limited warranties that range from 6 to 10 years to help ensure that your home has hot water for years to come.

A Closer Look

Diagram of the interior of a tank water heater.

How do electric tank water heaters work?

A. O. Smith electric tank water heaters heat water using one or two electric heating elements. When a hot water tap is opened, water pressure from the street pushes cold water into the system through a dip tube that delivers it toward the bottom of the tank. This pushes hot water from the top of the tank out to the hot water pipes for distribution of hot water throughout the home. Temperature sensors inside the tank signal the thermostat when to turn on the heating elements to add heat to the stored hot water. Each electric tank water heater includes a thermostat, a temperature and pressure relief valve, and a drain valve. All of these components are needed to monitor the hot water and ensure efficient, reliable, and safe operation. The thermostat cycles the heating elements to regulate the water temperature to the specified temperature set on the control.

Depending on your needs, gas tank and electric tank water heaters each provide their own wide range of benefits. Gas water heaters are typically cheaper to operate than electric. However, they cost more upfront and depend on the availability of a gas supply line and adequate venting at the installation location. There are a few different types of venting options that can be used for gas tank water heaters.
Electric tank water heaters are energy-efficient solutions for your home’s water heating needs. A. O. Smith’s electric tank water heaters have a UEF rating between .89 and 3.45, helping you save energy in your home. Although the recovery rate of electric water heaters is slower compared to gas water heaters, electric models can be less expensive to purchase and installation costs are generally lower.

While you might be able to install an electric tank water heater by yourself, A. O. Smith strongly recommends that you consult a local plumber or contractor to assist in the installation of your water heater. A local plumbing contractor can help ensure that the installation was done correctly, safely, and up to code so that there are no faults in the unit due to an installation error, which can lead to disruptions in hot water delivery or damage to your home.

Electric tank water heaters provide a wide range of advantages. They have a low upfront cost and are quick and easy to install. They also operate at high efficiency, as energy loss during the heating process and in standby is minimal.

There are many variables to consider when deciding what size of electric tank water heater to purchase. These include groundwater temperature, size of home, number of household members, number of bathtubs and/or showers, and hot water usage patterns. A. O. Smith offers a variety of models and sizes to suit your home and your family’s needs so that you never have to worry about running out of hot water. Consult A. O. Smith’s online XPERT Product Selector.

Hybrid Electric Heat Pump Tank Water Heaters

A. O. Smith's hybrid electric heat pump tank water heaters are engineered to heat water using the surround air.

Learn About Hybrid Electric Heat Pumps >

Point-of-Use Electric Mini-Tank Water Heaters

A. O. Smith's point-of-use electric mini tank water heaters serve smaller demands or a single application.

Learn About Point-of-Use >
Tank gas water heater

High-Efficiency Hybrid Electric Heat Pump Tank Water Heaters:

Proline Best logo
Tank electric water heater

Standard Electric Tank Water Heaters:


Proline Good logo
Single Shower Length 33 minutes 27 minutes
Back-to-Back Showers 4.2 showers 3.4 showers
Showers at the Same Time 2.9 showers 2.9 showers
Maximum Tub Size 85 gallons 75 gallons
Energy Star® Certified check_circle_outline
UEF 3.45 0.92
Warranty 6 - 10 Years 6 Years
*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.
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A. O. Smith water heaters are professionally installed by local independent contractors.


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Additional Reading

Contractor Resources

  • Screwdriver and wrench icon.

    Installation Guide

    Download our electric tank waterheater installation instructions.

    View Document
  • Set square icon.

    Resource Guide

    Match the flow rate to your customer’s needs.

    View Document
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    Cross Reference Tool

    Search for NAECA-compliant replacement options.

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