Please ensure Javascript is enabled for purposes of website accessibility

We are closed on Friday, July 4th, 2025 for Independence Day weekend and reopening Monday July 7th, 2025. Enjoy and be safe.

  • Sign In
  • Create an Account

Need Help?   Email:

Toggle Nav
Cart Icon Cart
Search
We ship to most places in continental USA
Chat with us
Need help
Our Locations

AO Smith DEN-66-12KW-240V/208V Dura-Power 66 Gallon Commercial Electric Water Heater - 3 Year Warranty. Unit is set to 240V but can be field converted to 208V.

SKU
SMIDEN66D

In Stock. Ships in 1-7 Business Days.

Click Here for Shipping Cost by Destination
Retail : $3,667.00 - $232.49 =
$3,434.51 You Save (6%)
66 Gallons
AO Smith DEN-30-12KW-208V Dura-Power 40 Gallon Commercial Electric Water Heater - 3 Year Warranty
AO Smith DEN-40-12KW-208V Dura-Power 50 Gallon Commercial Electric Water Heater - 3 Year Warranty
AO Smith DEN-52-12KW-208V Dura-Power 55 Gallon Commercial Electric Water Heater - 3 Year Warranty
Selected
AO Smith DEN-66-12KW-240V/208V Dura-Power 66 Gallon Commercial Electric Water Heater - 3 Year Warranty. Unit is set to 240V but can be field converted to 208V.
AO Smith DEN-80-12KW-240/208V Dura-Power 80 Gallon Commercial Electric Water Heater - 3 Year Warranty. Unit is set to 240V but can be field converted to 208V.
AO Smit DEN-120-12KW-240/208V Field Convertible to 208V Dura-Power 120 Gallon Commercial Electric Water Heater - 3 Year Warranty. Unit is set to 240V but can be field converted to 208V.
- +
66 Gallons
AO Smith DEN-30-12KW-208V Dura-Power 30 Gallon Commercial Electric Water Heater - 3 Year Warranty
AO Smith DEN-40-12KW-208V Dura-Power 40 Gallon Commercial Electric Water Heater - 3 Year Warranty
AO Smith DEN-52-12KW-208V Dura-Power 52 Gallon Commercial Electric Water Heater - 3 Year Warranty
Selected
AO Smith DEN-66-12KW-208V Dura-Power 66 Gallon Commercial Electric Water Heater - 3 Year Warranty
AO Smith DEN-80-12KW-208V Dura-Power 80 Gallon Commercial Electric Water Heater - 3 Year Warranty
AO Smith DEN-120-12KW-208V Dura-Power 120 Gallon Commercial Electric Water Heater - 3 Year Warranty
main product photo

Product details

AO Smith DEN-66-12KW-240V/208V Dura-Power 66 Gallon Commercial Electric Water Heater - 3 Year Warranty. Unit is set to 240V but can be field converted to 208V.

The Dura-Power DEN (standard upright) and DEL (lowboy) series is available with tank capacities from 6 through 119-gallons. They can be installed for nonsimultaneous and single element operation (maximum input up to 6 kW), or for simultaneous dual-element operation (maximum input up to 12 kW). Medium-watt density design disperses element temperature over larger surface contact area to minimize scale build-up, maximize efficiency and prolong element life.6 Year Limited Manufacturer Warranty.

Features

  • Glass lined tank - tank interior is coated with glass specially developed by A. O. Smith Ceramic Research for water heater use.

  • Elements - zinc plated copper sheaths for longer life. Medium watt density; means lower surface temperature to minimize scale build-up and more surface to heat water. D denotes Dual Element.

  • Standard voltages - 208, 240 and 480V unbalanced three-phase delta; easily converted to single-phase at terminal block (except 208V with 6000 watt elements).

  • Factory installed terminal block -just bring the service to heater and connect to block. Terminal block not supplied on 120V & 277 volt models.

  • Controls - temperature control (adjustable through a range of 120 deg to 180 deg F on dual element) and manual reset high temperature cutoff per element (dual element models). Factory wired for non-simultaneous operation; easily converted to simultaneous element operation (three phase models only)

  • CSA certified and ASME rated T&P relief valve

  • Simplified circuitry, color coded for ease of service

  • Anode rod for maximum corrosion protection

  • Cabinet has bonderized undercoat with baked enamel finish

  • Top inlet and outlet openings

  • Drain valve

  • Surface mounted thermostats

  • UL approved field conversion program

AO Smith Commercia Electrical Dura-Power Water Heater

Designed for use as a recovery heater having its ownstorage tank. Available in upright standard models (DEN) and lowboy models (DEL)

    GLASS-LINED TANK
    • Thirteen sizes; 6 thru 119 gallon capacity. Tank interior is coated with glass specially developed by A.O. Smith Ceramic Research for water heater use. Tanks Interior is coated with glass specially developed by A.O. Smith for water heater use
    ELEMENTS
    • Zinc plated copper sheaths for longer life.Medium watt density; means lower surface temperature to minimize scale build-up and more surface to heat water. Element sizes from 1.5 to 6 KW. Maximum input 12 KW (see chart on back)
    STANDARD VOLTAGES
    • 120, 277 single phase and 208, 240 and 480V unbalanced three-phase delta; easily converted to single phase at terminal block (except 208V with 6000 watt elements) Single element heater, single phase only
    TERMINAL BLOCK
    • Factory installed. Just bring the service to heater and connect to block. Terminal block not supplied on 120V & 277 volt models
    CONTROLS
    • Meets the standby loss requirements of the U.S. Department of Energy and current edition of ASHRAE/IES90.1

CONTROLS

    • Temperature control (adjustable through arange of 110° to 170°F on single element and 120° to 180°Fon dual element) and manual reset high temperature cutoff per element (dual element models) Factory wired for non-simultaneous operation; easily converted to simultaneous element operation (three phase models only)
    LIMITED WARRANTY OUTLINE
    • If the tank should leak any time during the first three years, under the terms of the warranty, A. O. Smith will furnish a replacement heater; installation, labor, handeling and local delivery extra. THIS OUTLINE IS NOT A WARRANTY. For complete information consult the written warranty or A. O. Smith Water Products Company
AO Smith
See All AO Smith Products

Specification Sheet

Product Specifications Installation Manual Parts Diagram
Basic Information
MPN ? Manufacturer Part Number 100351864
UPC / GTIN 671657275167
Manufacturer AO Smith
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. Dura-Power
Dimensions and Measurements
Kilo Wattage 12KW
Height (Inches) ? The vertical measurement from bottom to top, measured in inches. 60-3/4"
Width (Inches) ? The horizontal measurement from left to right, measured in inches. 21-3/4"
Depth (Inches) ? Depth 21-3/4"
Gallons 66 Gallons
Voltage 240/208V
Weight ? Weight 158.00
Characteristics and Features
Warranty ? The terms and conditions of the warranty provided for the product from the manufacturer. 3 Years
Water Heater Type Commercial
Type Tall
Water Connection Location Top
Fuel Type Electric
Energy Star No
Warranty and Product Information
Product Warranty 3 Years Tank
More Like This
More from AO Smith
  1. AO Smith 100187877 Blower Assembly with Hall Sensor Kit
    AO Smith 100187877 Blower Assembly with Hall Sensor Kit
    Retail : $1,227.00 - $336.77 =
    $890.23 You Save (27%)
    Add to Compare
  2. AO Smith GSP-130 Polaris™ 34-Gallon Power Direct Vent Natural Gas Water Heater
    AO Smith GSP-130 Polaris™ 34-Gallon Power Direct Vent Natural Gas Water Heater
    Retail : $9,426.00 - $3476.31 =
    $5,949.69 You Save (37%)
    Add to Compare
  3. AO Smith 100227396 CYCLONE® MXi/LV PVC Common Vent Kit (DuraVent) for 120 – 250 Models
    AO Smith 100227396 CYCLONE® MXi/LV PVC Common Vent Kit (DuraVent) for 120 – 250 Models
    Retail : $528.00 - $187.25 =
    $340.75 You Save (35%)
    Add to Compare
  4. AO Smith 100210100 RBC PV 165 Egree Blower Assembly
    AO Smith 100210100 RBC PV 165 Egree Blower Assembly
    Retail : $623.00 - $222.6 =
    $400.40 You Save (36%)
    Add to Compare
Document

Click Here to Explore All Tank Water Heaters

Related Categories

Expansion Tanks

Oil Storage Tanks

Tank Water Heaters

Tankless Water Heaters

Indirect Water Heaters

Point-of-use Water Heaters


By using this site you agree to our Terms, Conditions of Use and Privacy Statement © 2025 AF Supply Corp. All Rights Reserved.