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AO Smith Products

AO Smith BT80

BT-80 74 Gallon 75,100 BTU Commercial Gas Water Heater


Items that are currently in-transit to our warehouse, are currently in-stock at a drop-ship vendor’s, or manufacturer's warehouse will be marked as "Available". These products will ship once your order is processed (usually within 24-48 business hours). For any exceptions to this timeframe, an ETA (Estimated Time of Arrival) for your order will be emailed with accurate shipping dates in order to ensure that you are always updated and informed as to when your order will arrive at its final destination.

Quick Specs: View More

  • Width: 26.5"
  • Height: 61.125"
  • Depth: 26.5"

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Discontinued No longer available.

For millions of consumers, business owners, property managers and engineers worldwide, A. O. Smith has delivered innovative hot water solutions for over 70 years. Sold exclusively by plumbing wholesalers and plumbing contractors, A. O. Smith’s selection of residential and commercial water heaters, boilers and storage tanks is unmatched for quality and diversity. Anywhere hot water is needed, A. O. Smith can provide an energy-efficient solution with maximum value during and for years after installation. And, A. O. Smith stands behind its products and its customers with world-class service, combining cutting-edge technology with committed people who take pride in being the very best. Available at AppliancesConnection


  • 80% Thermal efficiency
  • Installed ASME T & P valve
  • Glass lined tank, foam insulation
  • Handhole cleanout on BT80 and BT100
  • Fully automatic controls with safety shut off
  • Draft diverter
  • Gas pressure regulator
  • Max working pressure 150 psi
  • 3-Year warranty on tank assembly


  • Application:  Plumbing
  • Fuel Type:  Natural Gas
  • Height:  61.125
  • Vent Size:  4"
  • Vent Type:  Type B
  • Diameter: 26-1/2"
  • Efficiency: 80%
  • Capacity (Gallons):  74 Gallon
  • Water Connection:  1"
  • Gas Connection:  1/2"
  • Max Pressure (PSI):  150 psi
  • ASME:  Yes
  • Weight (lbs):  271 lbs
  • BTU Input:  75100
  • Max Pressure:  14" W.C.
  • Recovery 40°F Rise:  182 GPH
  • Recovery 100°F Rise:  73 GPH
  • Recovery 140°F Rise:  52 GPH
  • Warranty:  3 Yr Limited Tank

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  • Brand:AO Smith
  • SKU:BT80
  • UPC:671657999216
  • Stock Id:290876
  • Product Number:SMIBT80


  • Fuel Type:Natural Gas
  • Capacity (Gallons):74 Gallon
  • Tankless:No


  • Width:26.5"
  • Depth:26.5"
  • Height:61.125"

    Technical Details

  • Warranty:3 Yr Limited Tank
  • Weight (lbs):271 lbs
  • Application:Plumbing
  • Diameter:26-1/2"
  • Usage:Commercial
  • Efficiency:80%
  • BTU Input:75100
  • Vent Type:Type B
  • Vent Size:4"
  • Water Connection:1"
  • Gas Connection:1/2"
  • ASME:Yes
  • Recovery 100°F Rise:73 GPH
  • Recovery 40°F Rise:182 GPH
  • Recovery 140°F Rise:52 GPH
  • Max Pressure (PSI):150 PSI
  • Max Pressure:14" W.C.
  • Weight:271.00 lbs