ProLine® XE Ultra-Low NOx Outdoor 160,000 BTU Condensing Propane Tankless Water Heater

Model ATO-240H
4.8 out of 5 Customer Rating
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Installation Type
Fuel Source
Maximum BTU's
  • ENERGY STAR® certified
  • Continuous flow rate up to 6.6 GPM
  • Primary commercial-grade copper heat exchanger is 25x better than stainless steel at heat transfer, stabilizing outgoing water temperatures quicker
Product Details
  • ENERGY STAR® certified
  • Continuous flow rate up to 6.6 GPM
  • Primary commercial-grade copper heat exchanger is 25x better than stainless steel at heat transfer, stabilizing outgoing water temperatures quicker
  • Secondary heat exchanger is made of 316L Stainless Steel to protect against corrosion
  • Highly efficient condensing Ultra-Low Nox tankless water heater delivers up to .94 Uniform Energy Factor (UEF)
  • Flexible power direct vent design allows for venting up to 100 feet using either PVC, CPVC, polypropylene or ABS Pipe (solid core)
  • Common vent up to 8 units
  • Includes integrated temperature controls and advanced diagnostics to simplify troubleshooting
  • Safety features include exhaust & water temperature safety control, overheat cut-off fuse and air-fuel ratio (AFR) sensor
  • 15-year limited warranty on heat exchanger in residential applications

  • The 240H Series offers high efficiency Ultra-Low NOx condensing technology allowing for the use of 3” PVC venting and has 0” clearance to combustibles. Features copper primary and 316L stainless steel heat ex-changers to provide high efficiency operation and excellent corrosion resistance. Outdoor models include a remote controller as a standard feature. 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-240H-P tankless water heater uses up to 160,000 BTU/hr of liquid propane to deliver an endless supply of hot water for a 2 bath home in northern climates and up to a 3 bath home in southern climates (one shower head per bath). Utilizing condensing technology, this heater is extremely efficient with a Uniform Energy Factor of 0.95. With an industry leading 15-year limited warranty, the ATO-240H-P tankless water heater provides years of hot water through innovation and quality. A. O. Smith’s ProLine® water heaters are residential products built to commercial-grade standard and are only available for purchase through professional wholesalers and contractors.

Specifications
Tech Specs
UEF
0.95
Maximum BTUs
160,000
Power Source
GAS
Limited Parts Warranty
5 Years
Water Connection Location
BOTTOM
Water Connection Size
0.75"
Emissions
Low NOx
ASME Certified
No
LEED Rating
1.50
Destination Country
US
Digital Display
true
Energy Star Certified
true
Fuel Source
PROPANE
Installation Type
OUTDOOR
Limited Heat Exchanger Warranty 
15 Years
Max Flow Rate
4.70
Minimum BTUs
13,000.00
Application
RESIDENTIAL
Shipping Height 
33.25
Shipping Length 
21.75
Shipping Width 
15.625
Side Loop
No
Dimension & Venting
Type
Water Heater
Height
23.63"
Width
17.75"
Shipping Weight
69lbs
Vent Type
Power Direct Vent
Find a Replacement
Current Product
Option 2
ProLine® XE Ultra-Low NOx Outdoor 160,000 BTU Condensing Propane Tankless Water Heater
ProLine® XE Ultra-Low NOx Outdoor 180,000 BTU Condensing Propane Tankless Water Heater
ATO-240H
ATO-340H
Rebates up to $300 +
Rebates up to $300 +
Width
17.75"
17.75"
Depth
11.25"
11.25"
Height
23.63"
23.625"
Shipping Weight
69lbs
69lbs
Power Source
GAS
GAS
Limited Tank Warranty
0 Years
0 Years
Limited Parts Warranty
5 Years
5 Years
Water Connection Location
BOTTOM
BOTTOM
Water Connection Size
0.75"
0.75"
Thermal Efficiency
0%
0%
All Reviews for ProLine® XE Tankless High Efficiency Condensing (100 series)
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