Non-Condensing Gas Tankless Water Heaters

Tested for durability in tough conditions and engineered to be long-lasting.

State Water Heaters non-condensing natural gas and propane tankless water heaters are designed to deliver continuous hot water on demand for your everyday needs. With many water heater options to fit your home’s specific considerations, State’s commitment to innovation means you’ll experience long-lasting value years after installation.

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A Gas non-condensing tankless water heater.

How Do Non-Condensing Gas Tankless Water Heaters Work?

State non-condensing tankless water heaters save space and supply continuous hot water for your home. A single heat exchanger heats the water to the set temperature you determine through unique non-condensing technology. Water flows through the heat exchanger and is heated by hot exhaust gases to the correct temperature. If any excess heat is not absorbed by the water, it is expelled through exhaust venting. Alongside a 15-year limited warranty, State non-condensing tankless water heaters can offer reliable hot water on demand in your home for years to come.

The main difference between non-condensing and condensing gas tankless water heaters lies in the efficiency. Condensing units make maximum use of the energy they take in through a dual heat exchanger by further utilizing the heat from the exhaust to heat the water quickly. Non-condensing gas tankless water heaters use a single heat exchanger.

Non-condensing gas tankless water heaters are able to deliver continuous hot water, but only when sized appropriately for the home and its residents.

Do tankless water heaters need a drain?
Ask your contractor whether your non-condensing gas tankless water heater needs a drain. It should not need a drain, while a condensing gas tankless water heater will need a drain.

How do I keep my tankless water heater from freezing?
While all State tankless water heaters include built-in protection against freezing, you will need to drain water from the unit if the heater is installed outdoors. This will help prevent freezing during power outages. We recommend hiring a professional licensed contractor to safely install your new unit.

What do I need?
Determine the incoming groundwater temperature, your home’s piping and setup, and the right size water heater for your needs. To do so, think through your home’s size and the number of people who will be using hot water and when and how it will be used on a typical day. You may consult State’s online XPERT™ Product Selector to help you choose a unit.

Where should I install it?
Due to its compact size and venting options, a tankless water heater can be installed almost anywhere in your home, including closets, laundry rooms, garages, and more. Outdoors on the exterior of the house is also an option if located in a warmer climate with no risk of freezing.

To determine the right size water heater for your needs, you may discuss options with a professional installer. You may also use State’s online XPERT™ Product Selector to help you choose a unit. Ultimately, the proper size comes down to the incoming groundwater temperature, the type of appliances you own, the number of people in your home, and the usage of hot water.

State’s condensing tankless water heaters boast some of the highest efficiency models for tankless water heaters. State’s condensing models have over 0.90 UEF (Uniform Energy Factor) and come with a 15-year limited warranty.

Benefits of Non-Condensing Gas Tankless Water Heaters

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On-Demand Hot Water

Non-condensing units can produce continuous, on-demand hot water every day. When paired with a recirculation pump and necessary piping, non-condensing gas tankless water heaters can provide instant hot water to your home.

Energy Savings

Non-condensing gas tankless water heaters are more efficient than most tank type gas water heaters. Gas tankless water heaters only heat water when needed.

Time to put pajamas on.
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Space Savings

Because of their small size, State’s non-condensing gas tankless water heaters can save much needed space in your home. They can be installed in tight spaces and in a variety of locations both inside and outside the home, such as closets, laundry rooms, etc.

Tankless Gas Water Heater

Gas Tankless:

GTS-510U 199,000 BTU

Tankless Gas Water Heater

Gas Tankless

GTS-540X3-NIH 199,000 BTU

Single Shower Length Unlimited Unlimited
Showers Back-to-back Unlimited Unlimited
Showers at The Same Time 2.6 3.1
Maximum Tub Size Unlimited gallons Unlimited gallons
X3® Scale Prevention Technology check_circle_outline
Continuous Hot Water check_circle_outline check_circle_outline
Space Savings check_circle_outline check_circle_outline
Energy Efficiency check_circle_outline check_circle_outline
Hot Water Storage Supply check_circle_outline check_circle_outline
UEF 0.81 0.93
Warranty 15 Years 15 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.

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
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Additional Reading

Contractor Resources

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    Installation Guide

    Download installation instructions for our gas tankless water heaters.

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    Resource Guide

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