Special Nonexistent Furniture
Part #: COF-455S
877-WAYFAIR (877-929-3247)|SKU #: QOS1081

A.O. Smith COF-455S Commercial Tank Type Water Heater Oil Fired 75 Gal Lime Tamer 455,000 BTU Input


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Arrives for Christmas to Woodbridge, NJ 02108 (Change)


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  • Commercial tank type water heater
  • Barometric draft regulator
  • Single stage oil pump
  • Hand hole cleanout
  • Meets or exceeds the thermal efficiency and/or standby loss requirements of the U.S. department of energy and current edition of ASHRAE/IESNA 90.1
  • CSA certified and ASME rated T and P relief valve
  • Efficient combustion chamber
  • Interrupted ignition
  • Oil solenoid safety valve
  • Recovery cap. 180 F Rise GPH: 436
  • Gallon capacity: 75
  • Input BTU/HR : 455,000
  • Made in USA
  • Warranty: 3 Year limited
Show Additional Info
Energy Guide Information:
  • Capacity: 75 Gallons
  • Additional Information: Your costs will depend on your utility rates and use. Cost range based only on models of similar capacity fueled by [natural gas, oil, propane, or electricity]. Estimated operating cost is based on a 2007 national average [electricity, natural gas, propane, or oil] cost of 10.65 cents per kWh or $1.218 per therm or gallon. For more information, visit www.ftc.gov/appliances.

Weights & Dimensions

  • Height to Vent: 73.75 Inches
  • Vent Minimum Diameter: 8 Inches
Additional Weights and Dimensions:
  • 0.75" Drain valve
  • Overall Height - Top to Bottom: 73.75 Inches
  • Overall Width - Side to Side: 27.75 Inches
  • Overall Depth - Front to Back: 27.75 Inches
  • Overall Product Weight: 700 Pounds
  • Water Connection Diameter: 1.5 Inches
  • Height to Temperature and Pressure Relief Valve: 73.75 Inches
  • Height to Drain Valve: 23.438 Inches
  • Additional Documents



    Assembly Required: NoProduct Type: Storage tank water heater
    Adjustable Thermostat: YesPortable: No
    Rust Resistant: YesCorrosion Resistant: Yes
    Anodic Protection: YesCircuit Breaker Panel Included: No
    Hose Included: NoGarden Hose Adapter Included: No
    Vacuum Breaker Included: NoPower Source: Oil
    Installation Type: Hard-wireMaximum Temperature: 180 Fahrenheit
    Minimum Temperature: 120 FahrenheitThermostat Included: Yes
    Maximum Water Pressure in PSI: 160Maximum Input: 455000 BTUs
    Minimum Input: 455000 BTUsIndoor Use: Yes
    Outdoor Use: NoRecovery Rate: 436 Gallons
    Phase: Single phaseAutomatic Shutoff: Yes
    Automatic Overheat Protection: YesShower Head Included: No
    Commercial Use: YesCountry of Manufacture: United States

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    Return Policy

    We want you to love it. If you don't, you may return your purchase within 30 days of delivery. All you need to do is visit our Self-Service Return Center for instructions. Return credits are issued within 24 hours once the item is received and inspected. Please note that shipping charges are non-refundable. The cost of return shipping will be deducted from your refund.

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    OUR SKU # QOS1081

    This item is also sometimes listed under the following manufacturer numbers: COF-455S