A. O. Smith
Vent Size (inches)
Available On Market
Uniform Energy Factor (UEF)
Water Heater Depth (inches)
Water Heater Width (inches)
Water Heater Height (inches)
Input Rate (BTU/hr)
Maximum Gallons Per Minute over 67°F rise
Minimum Gallons Per Minute over 67°F rise
Therms Per Year at 125°F outlet temp
Where to buy A. O. Smith ATO-540H 1**
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Price dynamics for A. O. Smith ATO-540H 1**
Total cost of ownership (TCO)
Information about total cost of ownership.
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