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AO Smith Products

AO Smith ECT66

ECT-66 Water Heater Residential Electric 66 Gal ProMax 240V 4.5/4.5KW Tall


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: 60.25"

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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


  • Water heater residential
  • Dynaclean dip tube
  • Coregard aluminum anode
  • Durable tamper-resistant brass drain valve
  • CSA certified and ASME rated T and P relief valve
  • 6-year tank / 6-year parts limited warranty
  • KW Input: 4.5
  • Gallon capacity: 66
  • Standard voltage: 240V
  • No. of elements: 2
  • Made in USA
  • Warranty: 6 Year limited
  • Overall dimension: 60.25" H x 20.5" W x 20.5" D


  • Installation: Indoor
  • Capacity (Gallons): 51-100 Gallons
  • Intended Household: 5 Person
  • Application:  Plumbing
  • Fuel Type:  Electric
  • Number of Elements:  2
  • Voltage: 240v
  • Max Input (KW):  6
  • Usage: Residential
  • Tankless: No
  • Height:  60.25"
  • Diameter:  22"
  • Recovery 90°F Rise:  21 GPH
  • 1st Hour Delivery (Gallons): 72
  • R-Value: 16
  • Energy Factor:  0.88
  • Warranty:   6 yr Tank/6 yr Parts Limited
  • Wattage: 4500

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  • Brand:AO Smith
  • SKU:ECT66
  • UPC:671657082307
  • Stock Id:290866
  • Product Number:SMIECT66


  • Fuel Type:Electric
  • Capacity (Gallons):51-100 Gallons
  • Tankless:No
  • Installation:Indoor


  • Volts:240V


  • Height:60.25"

    Technical Details

  • Wattage:4500
  • Warranty:6 yr Tank/6 yr Parts Limited
  • Application:Plumbing
  • Diameter:22"
  • Usage:Residential
  • Number of Elements:2
  • Energy Factor:0.88
  • Intended Household:5 Person
  • 1st Hour Delivery (Gallons):72
  • R-Value:16
  • Recovery 90°F Rise:21 GPH
  • Max Input (KW):6
  • Weight:178.00 lbs