The 110U Series is great for apartments, one bath homes in cold climates, condos and summer cabins. Remote control included as a standard feature. Provides a variety of installation options: indoor, outdoor, and direct vent. Complies with Ultra-Low NOx regulations and meets the energy efficiency requirements of ASHRAE 90.1b-1992.
The ATO-110U-N tankless water heater uses up to 140,000 BTUs of natural gas to deliver a max flow rate of 6.6 GPM. It utilizes non-condensing technology to achieve an Energy Factor of 0.82. This model meets Ultra-Low NOx emission requirements, and comes with a 15-year limited warranty.
The comprehensive line of A. O. Smith tankless water heaters provide hot water on-demand.
• The model activates when a fixture is opened
• Burners heat the water as it passes through
• A flow sensor recognizes when the water has stopped and shuts the burners off
Product Specifications
Tech Specs |
Emissions: |
Ultra-Low NOx |
Maximum BTUs: |
140,000 |
Minimum BTUs: |
15,000 |
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: |
Yes |
Technology: |
Non-Condensing |
Dimensions & Venting |
Type: |
Space Saving |
Height: |
20 1/4" |
Width: |
13 3/4" |
Depth: |
9 1/2" |
Product Weight: |
33lbs/15kg |
Shipping Weight: |
40lbs |