A. O. Smith ATI-110-N Indoor Natural Gas Non-Condensing Tankless Water Heater


Retail Price: $1100.00
Weight: 38.00 lbs
MPN: ATI-110-N

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140,000 BTU tankless gas water heater for residential applications

The 110 Series is perfect for one bath homes, condos, apartments in cold climates and summer cabins. It includes a remote control as a standard feature, and works with a variety of installation options: outdoor, indoor, and direct vent.


  •  140,000 BTUs
  •  Maximum flow rate of 6.6 GPM
  •  Non-condensing technology
  •  ENERGY STAR qualified
  •  energy factor of 0.83
  •  Meets Low NOx emission requirements
  •  Comes with a 15-year limited warranty
  •  Built in freeze protection
  •  Manual reset hi limit (Set at 194-Degree F)
  •  Overheat cutoff fuse
  •  Inlet and outlet thermistors for constant temperature monitoring



Emissions Low NOx
Maximum BTUs 140,000
Minimum BTUs
Thermal Efficiency 83%
Limited Heat Exchanger Warranty 15 Years
Limited Parts Warranty 5 Years
Water Connection Location Bottom
Water Connection Size 3/4"
Heat Exchanger Copper
Voltage 120
Energy Factor 0.82
Remote Control Included
Technology Non-Condensing
Type Space Saving
Height 20 1/4"
Width 13 3/4"
Depth (Low NOx)
7 3/4"
Product Weight 33lbs/15kg
Shipping Weight 40lbs
Vent Type (Indoor models)
Direct Vent
Vent Length (Indoor models) 50 feet at 4 diameter


  •  Low NOx Manual
  •  Spec Sheet

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Mar 18, 2016
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