40 ProMax Residential Table  Top Electric Water Heater Zoom

40 ProMax Residential Table Top Electric Water Heater


Brand: AO Smith

AO Smith
ESTT-40 has been discontinued.
Please contact customer service at
(888) 757-4774 for help finding an alternative.



Application: Plumbing
Intended Household: 2-3 Person
Capacity (Gallons): 40
Number of Elements: 2
Fuel Type: Electric
1st Hour Delivery (Gallons): 52
Energy Star Rated: No
Energy Factor: 0.88
Max Input (KW): 6
Height (Inches): 36
Diameter (Inches): 25"
Depth (Inches): 25"
Weight (lbs): 170 lbs
Recovery 90°F Rise: 21 GPH
Warranty: 6 yr Tank/6 yr Parts Limited

Description for AO Smith ESTT-40

ProMax® Lowboy Side Connect Electric Water Heaters


  • Convenient flat porcelain surface at 36" height, providing extra counter space wherever installed
  • All plumbing and electrical connections are made through the back of the water heater
  • Models are available in 27 and 40-gallon capacities and are equipped with PEX cross-linked polymer dip tubes
  • CSA Certified and ASME rated T&P relief valve
  • Environmentally friendly, non CFC foam insulation minimizes heat loss
  • Meets or exceeds Federal energy efficiency standards effective Jan. 20, 2004 according to the National Appliance Energy Conservation Act (NAECA) of 1992. Also meets or exceeds the standby loss requirements of the U. S. Department of Energy and current edition of ASHRAE/IESNA 90.1.
  • Certified to UL 174 for household electric water heaters
  • 6-Year limited tank and parts warranty
  • Side-mounted plumbing and electric connections
  • Designed for installation under a counter, crawl space or other tight spaces
  • Offer single heating element and durable tamper-resistance brass drain valve
  • 6-year tank/6-year parts limited warranty

    PLEASE NOTE: The product weighs 170 lbs. and may require the use of a
    lift gate.
    If you do require a lift gate at your delivery, you'll have the option to add this FREE of charge when you checkout.
  • 40 ProMax Residential Table Top Electric Water Heater

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    • 40 ProMax Residential Table Top Electric Water Heater


      Are there any rough in dimensions available for the ESTT-40? Is there a drain pan built-in to the unit?
      Asked on 7/12/2011 by Travis from Naples, FL

      1 answer

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