Adapt® Premium Condensing Ultra-Low NOx 199,000 BTU Natural Gas Commercial Tankless Water Heater

Model ACTH-199M 100
X3® Scale Prevention Technology
Maximum BTU's
Fuel Source

  • ENERGY STAR® certified with a UEF up to 0.95
  • 199,000 BTU input
  • Maximum flow rate of 10.5 GPM
  • Adapt® Premium Condensing Ultra-Low NOx 199,000 BTU Natural Gas Commercial Tankless Water Heater
    Model ACTH-199M 100
    Product Details
    • ENERGY STAR® certified with a UEF up to 0.95
    • 199,000 BTU input
    • Maximum flow rate of 10.5 GPM
    • Exhaust venting: 2” PVC up to 75' or 3” PVC up to 150'
    • Ultra Low NOx – Complies with SCAQMD Rule 1146.2
    • Common vent up to 12 units
    • Cascade up to 32 units with single cable per heater, cable included
    • Flexible venting with PVC, CPVC, Polypropylene, or ABS Pipe (solid core only)
    • Universal indoor or outdoor installation – outdoor vent cap kit sold separately
    • 8-year limited warranty on the heat exchanger

    • Adapt® Premium Condensing Commercial Gas Tankless water heaters are engineered for high-performance, high-demand applications and long-term durability, featuring a patented heavy-duty helical heat exchanger that outperforms traditional tankless systems. Designed for fast, flexible installation across a wide range of commercial applications. The Adapt® can easily be retrofitted or built into new construction with 2” and 3” PVC venting and is compatible with ½” or larger gas lines. The Adapt® Premium can be installed indoors or outdoors.

      With a maximum flow rate of 10.5 GPM and a UEF of up to 0.95, the Adapt® is not only ENERGY STAR® certified but also offers high thermal efficiency and corrosion resistance. Adapt® features a digital display for monitoring performance and adjusting temperature. With optional X3® Scale Prevention, the Adapt® requires less frequent descaling and maintains like-new performance longer than unprotected models.

      This Adapt® model is ultra-low NOx and certified to 10,100’ for both indoor and outdoor installations. It features an 8-year limited warranty on the heat exchanger and a 5-year limited warranty on all parts in commercial applications for peace of mind. Common vent up to 12 units or cascade up to 32 units with a single (included) cable per heater.

    Specifications
    Tech Specs
    UEF
    0.95
    Maximum BTUs
    199,000
    Power Source
    GAS
    Limited Parts Warranty
    5 Years
    Water Connection Location
    BOTTOM
    Water Connection Size
    0.75"
    ASME Certified
    No
    Amperes
    2
    Destination Country
    US
    ENERGY STAR® Certified
    Yes
    Flue Diameter
    2.00
    Fuel Source
    NATURAL
    Ignition Type
    Electronic Hot Surface Igniter
    Installation Type
    BOTH
    Limited Heat Exchanger Warranty 
    8 Years
    GPM (@67 F Temp Rise)
    5.8 GPM
    Minimum BTUs
    9,000
    Application
    COMMERCIAL
    Shipping Height 
    21"
    Shipping Length 
    39.75"
    Shipping Width 
    22"
    Side Loop
    No
    Voltage
    120
    Dimension & Venting
    Type
    Water Heater
    Height
    33.8"
    Width
    16.5"
    Shipping Weight
    117 lbs
    Vent Material
    PVC, CPVC OR PP
    Marketing Videos
    Adapt® Premium Commercial Condensing Gas Tankless - Application & Installation
    Adapt® Premium Commercial Condensing Gas Tankless - Features & Benefits
    Adapt® Premium Commercial Condensing Gas Tankless - How It Works