Tankless Water Heaters

Delivering continuous on-demand hot water from water heaters built to last.

By delivering innovative solutions for over 73 years State Water Heaters has become a leader in the water heating industry, remaining committed to seeking new materials, new technology and innovative engineering techniques. With resilience at the core of its DNA, State works hard to make sure its water heaters last while always challenging itself to provide better, tougher products and consistent, long-lasting support.

State’s rich heritage of hard work and dedication means your tankless water heater comes with the commitment to support you for years to come.

“I have had this product for well over a year and it runs perfectly. It supplies my whole house with plenty of hot water. Worth every penny!”

— John

Benefits of Tankless Water Heaters

  • Children washing hands.

    Continuous Hot Water

    Tankless water heaters work hard to deliver continuous hot water, ensuring that you’ll always have a supply of hot water if your tankless unit is sized according to your needs.

  • Father and son shaving.

    Saves Energy

    State tankless water heaters may lower your energy costs by heating your water only when you’re using it. Energy savings is dependent on your usage.

  • Family washing dishes together.

    Space Savings

    Tankless water heaters save a large amount of space compared to traditional tank water heaters while still providing similar performance.

  • A labrador puppy being washed in a sink.

    On-Demand Hot Water

    State’s heating technology provides dependable, on-demand hot water by heating your water only when you need it.

  • A smiling lady washing vegetables

    Instant Hot Water

    Get hot water instantly when you install a State tankless water heater with a built-in recirculation pump, paired with the proper recirculation piping.

  • Two chefs preparing dishes near a sink.

    Innovation & Reliability

    State has a rich heritage of prioritizing innovation and building durability into each product.

A Closer Look

Diagram of the interior of a tankless water heater.

How Do Tankless
Water Heaters Work?

Tankless water heaters are attached directly to your water line. The burner or heating element in your tankless water heater activates when you open a hot water tap, allowing the water to flow through. As water flows through the heat exchanger, it absorbs the heat and quickly reaches the preset temperature before traveling to the open fixture(s). Because of the direct heat exchange, tankless water heaters provide on-demand hot water.

There are advantages that come with both tank and tankless water heaters. Alongside usage preferences and energy supply, you can consider the space available in your home or building and other factors unique to your lifestyle as you decide which option is best for you.

Before you purchase a gas or electric water heater, be sure to consider the following factors. Gas tankless water heaters are more affordable if you have existing natural gas or propane hookups. When it comes to electric tankless water heaters, it’s crucial to examine whether you have adequate amperage to support your unit. This may require adding 240V electric service. A professional installer can help you consider all the factors involved and lead you to the best choice for your needs.

While there are many variables that impact cost, you may experience a generally higher upfront cost when installing a tankless water heater. However, you may save over time depending on usage, local energy costs, incoming groundwater temperature, and more.

Though there are many factors at play when it comes to determining operational costs, tankless water heaters generally cost less in most applications. Lower costs come from only consuming energy when hot water is needed instead of constantly heating a tank of water to maintain a set temperature.

State tankless water heaters are built for durability and come with some of the longest warranties in the industry. The exact lifespan of a tankless water heater can vary greatly depending on water conditions, usage rates and maintenance. Owners of traditional tankless units can extend the life of their water heater with routine maintenance and descaling, which also allows the unit to run at optimal energy efficiency.

Tankless water heaters offer many advantages. To start, energy savings are likely despite a higher upfront cost. Tankless units also require less space, so they can be installed in a wider variety of homes and buildings. Additionally, endless hot water that is not dependent on a tank supply is a main advantage many users find makes a difference.

Annual descaling maintenance is required for most units. When the recommended maintenance is completed on a tankless water heater, it is more likely to last and perform well for years to come.

Because tankless water heaters are consistently rising in popularity, having one installed in your home is likely to be a very attractive feature for potential homebuyers. And you will enjoy its benefits while you are still living in your home!

Start by determining which kind of energy your home currently uses—electric or gas. Then, think through the size of your home and its number of residents. This will help you figure out the maximum hot water usage your home requires, so you can calculate your home’s required energy input.

Gas tankless water heaters can be installed almost anywhere in a home because they’re much smaller than traditional tank options. When choosing an installation location, remember that hot water arrives to fixtures like showers or sinks faster when it is located closer to those fixtures.

Gas tankless water heaters may use different vent configurations than gas tank water heaters. A professional contractor can help you navigate the best venting options for your unique home.

Tankless vs. Tank

Examine the advantages of each type of water heater in this side-by-side comparison.

A group of tankless water heaters

Tankless Water Heater

  • Continuous on-demand hot water
  • Energy efficient
  • Lower space requirements
  • Long-lasting for years after installation
  • X3® Scale Prevention Technology on select models


A group of tank water heaters

Tank Water Heater

  • Low initial investment
  • Energy-efficient options
  • Easy installation
  • Wide range of tank sizes (up to 95 gallons)
  • Storage supply of hot water
A tankless water heater

Never Descale Again. Ever.

Introducing X3® Scale Prevention Technology on our Condensing Gas Tankless Water Heaters. Over 15 years Learn About Tankless with X3® Scale Prevention Technology life with no maintenance.

View All Tankless Models with X3® Learn About Tankless with X3® Scale Prevention Technology
A gas tankless water heater

Gas Tankless
Water Heaters

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Learn more about State gas tankless water heaters to see if they are the right fit for your needs.

Electric Tankless
Water Heaters

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Learn more about State electric tankless water heaters to see if they are the right fit for your needs.

An electric tankless water heater
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Additional Reading

Contractor Resources

  • Screwdriver and wrench icon.

    Installation Guide

    Download installation instructions for our tankless water heaters.

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  • Set square icon.

    Resource Guide

    Match product to your customer’s flow rate needs.

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    Cross-Reference Tool

    Search for NAECA-compliant replacement options.

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