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A. O. Smith Tankless Water Heater Gas - On Demand Hot Water 6.6 GPM ProLine® XE Ultra-Low NOx Outdoor 120,000 BTU Condensing Natural Gas Tankless Water Heater

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Product details

Management number 229885219 Release Date 2026/05/31 List Price $360.00 Model Number 229885219
Category

The 140H Series offers high efficiency Ultra-Low NOx condensing technology allowing for the use of 3” PVC venting and has 0” clearance to combustibles. Indoor models are certified up to 10,100 ft. altitude. 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-140H-N tankless water heater uses up to 120,000 BTUs of natural gas to deliver a max flow rate of 6.6 GPM. It utilizes condensing technology to achieve a Uniform Energy Factor of 0.91. this model meets Ultra-Low NOx emission requirements, and comes with a 15-year limited warranty. A. O. Smith’s ProLine water heaters are residential products built to commercial-grade standards and are only available for purchase through professional wholesalers and contractors.

  • ProLine XE Ultra-Low NOx Outdoor 120,000 BTU Condensing Natural Gas Tankless Water Heater ATO-140H. Continuous hto water flow rate up to 6.6 GPM.
  • Wall-mount design saves valuable space and allows for additional storage and flexibility.
  • Primary commercial-grade copper heat exchanger is 25x better than stainless steel at heat transfer, stabilizing outgoing water temperatures quicker.
  • Vents with 3” PVC up to 70 feet or 4" PVC up to 100 feet.
  • ncludes integrated temperature controls and advanced diagnostics to simplify troubleshooting.
UPC 671657177393
ASIN B0FSFPDX24
Color White
Flow Rate 6.6 Gallons Per Minute
Brand Name A. O. Smith
Efficiency 0.91
Mount Type Wall
Style Name Outdoor Natural Gas 140H
Heat Output 120000 British Thermal Units
Is Electric No
Item Weight 22.68 Kilograms
Manufacturer A. O. Smith
Model Number ATO-140H 100
Power Source Natural Gas
Special Features Ultra-Low NOx condensing technology
Included Components water heater
Maximum Temperature 140 Degrees Fahrenheit
Item Dimensions W x H 13.87"W x 22.88"H
Manufacturer Part Number ATO-140H 100

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