Adapt® NC Non-Condensing Ultra-Low NOx Indoor 180,000 BTU Natural Gas Tankless Water Heater

Model ATI-180B-N 100
4.6 out of 5 Customer Rating
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X3® Scale Prevention Technology
Installation Type
Fuel Source
Maximum BTU's

  • 180,000 BTU input
  • Max Flow Rate of 10 GPM
  • Highly Efficient – Uniform Energy Factor (UEF) 0.82
  • Adapt® NC Non-Condensing Ultra-Low NOx Indoor 180,000 BTU Natural Gas Tankless Water Heater
    Model ATI-180B-N 100
    4.6 out of 5 Customer Rating
    • reviews, product
    • BV SEO Enabled: RR Not Found
    Product Details
    • 180,000 BTU input
    • Max Flow Rate of 10 GPM
    • Highly Efficient – Uniform Energy Factor (UEF) 0.82
    • 5-year limited warranty on all parts in residential applications
    • Ultra Low NOx – Complies with SCAQMD Rule 1146.2
    • Cascade up to 12 units with single cable per heater, cable included
    • Certified from Sea Level to 7,800 ft
    • Ease Of Installation – 3/4” Gas Line or larger
    • Approved for installation in manufactured homes
    • 10-year limited warranty on heat exchanger in residential applications

    • Experience the power of Adapt™ NC non-condensing tankless water heaters, designed to deliver reliable, on-demand hot water for any residential setting. Both indoor and outdoor models provide impressive performance—offering up to 180,000 BTU/h and a maximum flow rate of 10 gallons per minute. The ultra-low NOx emissions ensure compliance with stringent air quality standards, while the electronic ignition and freeze protection features guarantee dependable operation year-round. Adapt™ NC models are approved for installation in manufactured homes and can be cascaded (up to 12 units) for larger demands, making them a versatile solution for modern households. Installation is simple, thanks to a standard 3/4” gas line.

      With no hard water exclusions and a 10-year limited warranty on the heat exchanger, Adapt™ NC delivers peace of mind and exceptional value. Choose Adapt™ NC and experience the next generation of tankless water heating—efficient, durable, and engineered for hassle-free comfort.

    Specifications
    Tech Specs
    Nominal Gallon Capacity
    1 Gallons
    Rated Storage Volume
    1 Gallons
    UEF
    0.82
    Maximum BTUs
    180,000
    Power Source
    GAS
    Limited Parts Warranty
    5 Years
    Water Connection Location
    BOTTOM
    Water Connection Size
    0.75"
    ASME Certified
    No
    Amperes
    5
    Destination Country
    US
    Flue Diameter
    3.00
    Fuel Source
    NATURAL
    Ignition Type
    Intermittent/Electronic
    Installation Type
    INDOOR
    Limited Heat Exchanger Warranty 
    10 Years
    GPM (@67 F Temp Rise)
    4.7 GPM
    Minimum BTUs
    10,000
    Application
    RESIDENTIAL
    Shipping Height 
    16.25"
    Shipping Length 
    34.25"
    Shipping Width 
    20.63"
    Side Loop
    No
    Voltage
    120
    Dimension & Venting
    Type
    Water Heater
    Height
    25.5"
    Width
    15.5"
    Shipping Weight
    73 lbs
    Vent Material
    Category III
    Marketing Videos
    Adapt® NC Non-Condensing Gas Tankless Water Heater - How It Works
    Adapt® NC Non-Condensing Gas Tankless Water Heater Application & Installation
    Adapt® NC Non-Condensing Gas Tankless Water Heater Features & Benefits
    All Reviews for Adapt® NC Tankless Non-Condensing X3 (100 series)
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