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AO Smith Products

AO Smith BTH500

BTH-500 Commercial Tank Type Water Heater Natural Gas 130 Gallon Cyclone Xi 499,900 BTU Input High Efficiency


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: 33-1/8"
  • Height: 75.5"
  • Depth: 33.13"

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Discontinued No longer available.

A. O. Smith Corporation is a global leader applying innovative technology and energy-efficient solutions to products marketed worldwide. Our goal is to be a leading global water technology company, and our focus is on building this platform through new product development, global expansion, strategic acquisitions and partnerships. Today’s A. O. Smith is one of the world's leading manufacturers of residential and commercial water heating equipment, offering a comprehensive product line featuring the best-known brands in North America and China. Available at AppliancesConnection


The A. O. Smith Cyclone Xi family of products represents the industry's most technologically advanced commercial water heaters. The innovative Cyclone Xi design takes performance to its highest level with efficiencies of 95% and 96%. The Cyclone Xi features an Intelligent Control System making it the smartest water heater in the industry.
Cyclone Xi provides outstanding hot water output, with dramatic savings on operating costs compared to units with standard 80% efficiency. A. O. Smith's leading-edge engineering delivers conventional power-vent or sealed combustion power direct-vent versatility, low NOx emissions and excellent space-saving characteristics. Powered anodes, standard on all Cyclone Xi models, provide superior tank protection for years of trouble free operation.


  • Commercial tank type water heater
  • Intelligent control system with LCD display -provides detailed water heater status information, precise temperature control, built-in diagnostics, and run history information
  • Submerged combustion chamber with helical heat exchanger coil - positioned in center of tank, surrounded by water to virtually eliminate radiant heat loss from chamber. Spiral heat exchanger keeps hot burner gases swirling, uses centrifugal force to maximize efficiency of heat transfer to water in tank. Spiral heat exchanger prevents scale and sediment from forming on water-side surface, which can reduce energy efficiency over time
  • Powered anodes -provides long-lasting tank protection in varying water conditions, does not require maintenance or inspection
  • Permaglas ultra coat glass lining -exclusive process provides superior protection against corrosion. Both sides of heat exchanger coil are lined for protection against flue gas condensate inside coil
  • Mechanical venting versatility - conventional power-venting or sealed combustion direct venting. Vents vertically or through sidewall. Direct-vent intake and exhaust pipe can terminate separately outside building, or through single opening, using concentric vent assembly. Uses inexpensive PVC, CPVC or ABS pipe for intake and exhaust
  • High efficiency pre-mix powered burner -down-fired pre-mix burner provides optimum efficiency and quiet operation. Top-mounted burner position prevents condensation from affecting burner operation
  • Space saving design for installation flexibility
  • CSA certified and ASME rated T and P relief valve
  • Three year limited tank warranty
  • Recovery cap. 100°F Rise GPH: 576
  • Warranty: 3 Year limited
  • Overall dimension: 75.5" H x 33.125" W x 33.125" D
  • Gallon capacity: 130
  • Input BTU/HR : 499,900
  • Vent size: 4
  • Made in USA


  • Type: Tank Heaters
  • Installation: Indoor
  • Application:  Plumbing
  • Fuel Type: Natural Gas
  • Capacity (Gallons):  130 Gallons
  • BTU Input: 499900
  • Height:  75.5"
  • Usage: Commercial
  • Diameter:  33-1/8"
  • Weight:  855 lbs
  • ASME:  Yes
  • Vent Size:  4"
  • Efficiency: 96%
  • Recovery 40°F Rise:  1439 GPH
  • Recovery 90°F Rise:  640 gal/hr
  • Recovery 140°F Rise:  411 GPH
  • Max Pressure:  10" W.C.
  • Gas Connection:  1-1/4"
  • Warranty:  3 Yr Limited Tank
  • Vent Type:  ABS,PVC,CPVC
  • Voltage: 120v
  • Hertz:  60
  • Application:  Heating
  • Max Pressure (PSI):  160 psi
  • Width: 33-1/8"
  • Depth: 33-1/8"

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  • Brand:AO Smith
  • SKU:BTH500
  • UPC:671657092665
  • Stock Id:290918
  • Product Number:SMIBTH500


  • Fuel Type:Natural Gas
  • Capacity (Gallons):130 Gallons
  • Installation:Indoor


  • Volts:120 Volts


  • Width:33-1/8"
  • Depth:33.13"
  • Height:75.5"

    Technical Details

  • Weight:855 lbs
  • Type:Tank Heaters
  • Warranty:3 Yr Limited Tank
  • Application:Plumbing
  • Diameter:33-1/8"
  • Hertz:60Hz
  • Usage:Commercial
  • Efficiency:96%
  • BTU Input:499900
  • Vent Type:ABS,PVC,CPVC
  • Vent Size:4"
  • Gas Connection:1-1/4"
  • ASME:Yes
  • Recovery 90°F Rise:640 gal/hr
  • Recovery 40°F Rise:1439 GPH
  • Recovery 140°F Rise:411 GPH
  • Max Pressure (PSI):160 psi
  • Max Pressure:10" W.C.