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A. O. Smith 20 Gallon Dura-Power™ DEL Commercial Electric Water Heater

Water Heater Description

A. O. Smith 20 Gallon Dura-Power™ DEL Commercial Electric Water Heater

A. O. Smith 20 Gallon Dura-Power™ DEL (lowboy) can be installed for non-simultaneous and single element operation (maximum input up to 6 KW), or for simultaneous dual-element operation (maximum input up to 12 KW). Meets standby loss requirements of DOE and ASHRAE/IESNA 90.1.

  • CSA certified and asme rated t&p relief valve
  • Simplified circuitry, color coded for ease of service
  • Cabinet has bonderized undercoat with baked enamel finish

A. O. Smith 20 Gallon Dura-Power™ DEL (lowboy) Commercial Electric Water Heater is designed for use as a recovery heater having its own storage tank. 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. Tank interior is coated with glass specially designed by A. O. Smith.

Manufacturer SKU: DEL-20

Manufacturer PDF: AOSCE15400.pdf

Water Heater Warranty

Waterheaters.com will honor all warranties in accordance with manufacturer policies and procedures. Manufacturer warranty issues should be addresses directly with the manufacturer.

3 Year Limited Tank Warranty

Water Heater Specifications


A. O. Smith




Tank (whole house)

Tank Capacity (gallons)


Ignition Type

Hot Surface Ignition

Energy Star



Why Choose Us

Local Service on Long Island, NY for both Residential & Commercial water heaters.

For every water heater installed, Waterheaters.com donates 100 meals to children through Island Harvest.

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