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AO Smith Products

AO Smith BTR120

BTR-120 Commercial Tank Type Water Heater Nat Gas 71 Gal Master-Fit 120,000 BTU Input


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.

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  • Height: 45"

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Discontinued No longer available.

Compact and easy to install! Master-Fit gas water heaters (with automatic flue damper) fit in tight spaces because they're up to one foot shorter than the models they replace. These self-cleaning units can be installed standalone, manifolded or connected to storage tanks. Available at AppliancesConnection


  • Commercial tank type water heater
  • The eliminator self-cleaning system designed to significantly reduce, or eliminate sediment build-up inside the tank. Reduced sediment build-up maintains rated thermal effi ciency and reduces water heating costs. Self-cleaning system prolongs tank life
  • Factory-installed draft diverter and flue damper. Low-profile draft diverter helps for installation in tight spaces. Automatic motorized flue damper helps minimize standby heat loss
  • Three water connection options for added flexibility. Hot and cold water connections can be made through front, top or rear of unit. Eliminator system operates when cold water is connected through front
  • Permaglas ultra coat glass lining exclusive process provides superior protection against corrosion. Coregard anode rods with stainless steel core provide additional corrosion protection
  • Intermittent electronic ignition eliminates standing pilot, saves energy. Includes power on/off switch. Provides flame failure response in less than one second
  • Factory- installed CSA certified, and ASME rated T and P relief valve
  • 80% thermal efficiency
  • Fully automatic control system. Manual-reset gas shut-off device prevents excessive water temperature. Adjustable thermostat with 120ºF — 180ºF range. Gas pressure regulator and pilot filter
  • Hand hole cleanout, allows easy access to tank interior for cleaning
  • Recovery cap. 100°F Rise GPH: 116
  • Gallon capacity: 71
  • Input BTU/HR : 120,000
  • Vent size: 5
  • Made in USA


  • Type: Water Heaters
  • Fuel Type: Natural Gas
  • Installation: Indoor
  • Application: Plumbing
  • Features: Commercial
  • Capacity: 71 Gallons
  • BTU Input: 100,000
  • Vent Size: 5"
  • Height: 45"
  • Diameter: 27.75"
  • Vent Type: Type: B
  • Efficiency: 0.80%
  • Water Connection: 1-1/2"
  • Gas Input: 14" W.C. Max
  • ASME: No
  • Gas Connection:  3/4"
  • Warranty: 3 Year limited
  • Recovery 100°F Rise:  116 GPH
  • Voltage: 120v
  • Hertz: 60
  • Max PSI: 160 psi

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  • Brand:AO Smith
  • SKU:BTR120
  • UPC:671657939694
  • Stock Id:256025
  • Product Number:SMIBTR120


  • Fuel Type:Natural Gas
  • Installation:Indoor


  • Volts:120 Volts


  • Height:45"

    Technical Details

  • Type:Water Heaters
  • Total Capacity:71 Gallons
  • Features:Commercial
  • Warranty:3 Year Limited
  • Application:Plumbing
  • Diameter:27.75"
  • Hertz:60Hz
  • Efficiency:0.80%
  • BTU Input:100,000
  • Max PSI:160 psi
  • Vent Size:5"
  • Water Connection:1-1/2"
  • Gas Connection:3/4"
  • Gas Input:14" W.C. Max
  • ASME:No
  • Recovery 100°F Rise:116 GPH
  • Weight:400.00 lbs