ATHR-160M Adapt™ Premium Condensing Ultra-Low NOx 160,000 BTU Natural Gas Tankless Water Heater

AOSATHR160M MFG #: 100374797
  • Flow Rate: 10.5 gpm Max
  • Fuel Type: Natural Gas
  • Indoor / Outdoor: Indoor / Outdoor
  • Ultra Low NOx: Yes
  • Vent Type: Power Direct
  • Dimensions: 33.8 in H x 16.1 in D x 16.5 in W
  • Manufacturer: A.O. Smith
  • Manufacturer #: 100374797
  • Series: Adapt
  • temHeatingCapacity: 160,000 BTU/hr
  • Voltage Rating: 120 V
  • Weight: 104 lb
Delivering robust, on-demand performance, these high-efficiency heaters install in practically any residential setting. The single stainless steel, heavy-duty heat exchanger design is more resilient to scale buildup and corrosion and when coupled with X3 Scale Prevention Technology (not included), there is zero lifetime descaling maintenance required.
Looking for model-specific repair or replacement parts? Enter the unit’s serial number into the A.O. Smith Parts Finder.

  • Features
  • Integrated Recirculation Pump
  • Field convertible from Natural Gas to Liquid Propane, Kit Included
  • 22:1 Turndown Ratio
  • Max flow rate 10.5 GPM, 0.4 GPM activation
  • 1/2" Gas Line
  • Venting Flexibility 2" up to 75' & 3" up to 150'
  • **Outdoor Vent Cap Kit Required, Kit Sold Separately