Introducing The New Adapt® NC Gas Tankless
The Adapt® Gas Tankless Family
Adapt® NC Non-Condensing
On-demand hot water - only when you need it
Single non-condensing copper heat exchanger for proven, reliable performance
X3 Scale Prevention Technology on select models
Certified up to .82 UEF
Simple Install:
- Wall-mount bracket & hardware included
- Indoor & outdoor options
- 3” venting
- ¾” gas line compatibility
Adapt® SC Standard Condensing
On-demand hot water - only when you need it
Dual condensing heat exchanger system, copper primary, stainless steel secondary
X3 Scale Prevention Technology on select models
Energy Star Certified up to .95 UEF
Flexible Install:
- Wall-mount bracket & hardware included
- Indoor & outdoor options
- 2” or 3” venting
- ¾” gas line compatibility
Adapt®+ Premium Condensing
On-demand hot water - only when you need it
Patented single heavy-duty stainless-steel helical condensing heat exchanger
X3 Scale Prevention Technology on select models
Energy Star Certified up to .95 UEF
Enhanced Flexible Install:
- Wall-mount bracket & hardware included
- Indoor & outdoor options
- 2” or 3” venting
- ½” or ¾” gas line compatibility
Built-in recirculation pump - faster water delivery with optional remote activation
Adapt® Non-Condensing
A. O. Smith’s Adapt® NC non-condensing gas tankless water heaters (180K and 199K BTU/hr) deliver reliable, high-efficiency, on-demand hot water for residential applications.
Built to Perform
Adapt® NC gas tankless water heaters are built to deliver continuous hot water with reliable performance. With an efficiency rating of up to 0.82 UEF, these units help reduce energy consumption while maintaining consistent water temperatures. The Adapt® NC’s durable copper heat exchanger enables fast, efficient heat transfer for dependable, on-demand hot water throughout the home.
Adapt® NC models are backed by a strong warranty, including a limited warranty of up to 15 years on select X3® models for long-term confidence. X3® models also feature no scale-related warranty exclusions, providing added peace of mind and long-term value.
Built to Last
Designed for long-term reliability, Adapt® NC helps reduce maintenance and extend the unit's life. Featuring A. O. Smith’s X3® Scale Prevention Technology, these models protect the heat exchanger from scale buildup, extending product life up to three times longer than standard tankless water heaters without scale protection.
Adapt® NC is available in two models to fit different needs and budgets: X3® models with integrated scale-prevention technology and base models that deliver dependable performance.
Built to Adapt
Adapt® NC tankless water heaters are designed for flexible, easy installation across a variety of residential applications. An included outdoor wall-mount bracket simplifies mounting and helps speed up installation, especially in tight or hard-to-fit spaces.
Featured Adapt® Non-Condensing Products
- 199,000 BTU input
- Max Flow Rate of 10.5 GPM
- 15-year limited warranty on heat exchanger in residential applications
- 180,000 BTU input
- Max Flow Rate of 10.5 GPM
- 10-year limited warranty on heat exchanger in residential applications
- 199,000 BTU input
- Max Flow Rate of 10.5 GPM
- 15-year limited warranty on heat exchanger in residential applications
- 180,000 BTU input
- Max Flow Rate of 10.5 GPM
- 10-year limited warranty on heat exchanger in residential applications
How Adapt® Non-Condensing Works
The A. O. Smith Adapt® non-condensing tankless water heater saves space and supplies continuous hot water for your home.
Non-condensing technology utilizes a single copper heat exchanger to heat the water to the desired temperature. Water flows through a heat exchanger where it is heated to the desired temperature by the hot exhaust gases. The excess heat not transferred to the water is expelled through the exhaust vent. This exhaust is at a higher temperature than that of a condensing tankless heater, reducing the risk of corrosion. However, non-condensing heaters generally require metal exhaust venting to withstand the higher temperatures.
Paired with a 15-year limited warranty for the X3® models and a 10-year warranty for the base models, an A. O. Smith Adapt® non-condensing tankless water heater can provide years of hot water for your home.
Still Have Questions?
A non-condensing tankless water heater heats water on demand using a single heat exchanger, rather than storing hot water in a tank.
The A. O. Smith Adapt® NC uses a durable copper heat exchanger to rapidly heat water as it flows through the water heater. When a tap is turned on, cold water passes through the heat exchanger and is quickly brought to the set temperature, delivering continuous hot water without running out. Excess heat is vented at higher temperatures than condensing models, supporting reliable performance and long-term durability.
The Adapt® NC tankless water heater offers efficient performance with a Uniform Energy Factor (UEF) of up to 0.82. This level of efficiency helps reduce energy usage compared to traditional tank water heaters while still delivering strong, consistent hot water output.
Yes, Adapt® NC tankless water heaters are designed for flexible installation and are available in both indoor and outdoor models. A heavy-duty outdoor-rated cord supports outdoor installations, while an included wall-mount bracket makes installation easier in tight or unconventional spaces.
Tankless water heaters have different flow rates measured in gallons per minute (GPM), which indicate the amount of water they can deliver at a time. Because these water heaters don't maintain a supply of hot water in a tank, you need to choose an appropriately sized tankless model based on household needs. The ideal output rate for your home depends on the number of people in the residence, the appliances you use, and the original temperature of the water being heated. Some people install more than one tankless water heater based on their requirements. Check out our water heater selector to help choose the best water heater for your needs.
- What do I need?
- Before installation, you will need to determine the incoming ground water temperature, the ideal location in your home, and the correct water heater size required for your needs.
- Where to install?
- A tankless water heater can be installed anywhere in your home with the correct piping—closets, garage, bathrooms, etc. In warmer climates where there is no risk of freezing, a tankless water heater may be installed on the exterior of the home to save on interior space.
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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 savings to consumers for the purchase of water heaters that meet certain energy efficiency standards.
Need Help From A Pro?
A. O. Smith water heaters are professionally installed by local independent contractors.
Learn About Residential Tankless Water Heaters
What is a Tankless Water Heater?
In this guide, we will explore tankless water heaters in depth. We'll examine the main differences between electric and gas models, how they compare to traditional water heaters, and why it might be good for your wallet to make the switch.
How Do Tankless Water Heaters Work?
Compare tankless to traditional water heaters, and the pros and cons of using a tankless water heater in your home.
Tankless Water Heater Cost
If you're wondering about tankless water heater cost or where to purchase a dependable system, read on to discover what you can expect to pay and how to go about choosing a tankless water heater that meets your specific needs.
Tankless Water Heater Pros and Cons
Tankless water heaters are a space-saving, energy-efficient alternative to traditional tank water heaters. Understanding how these units operate helps you decide whether a tankless water heater is right for your home.
Need Help From A Pro?
A. O. Smith water heaters are professionally installed by local independent contractors.