A.O. Smith

A.O. Smith® ENLB-40 Lowboy 38 Gallon ProLine Residential Electric Water Heater with Insulation Blanket, Top-Connect

AOSENLB40MAR MFG #: 100211031
A.O. Smith® ENLB-40 Lowboy 38 Gallon ProLine Residential Electric Water Heater with Insulation Blanket, Top-Connect
  • Power Rating: 4500 W
  • Voltage Rating: 240 V
  • Anode Rod Material: Magnesium
  • ASME Yes / No: No
  • Dimensions: 23 in W x 32 in H
  • Energy Factor: 0.92
  • Heating Element: (2) Copper/Incoloy®
  • Manufacturer: A.O. Smith
  • Manufacturer #: 100211031
  • Pressure Rating: 150 psi
  • Recovery Rate: 21 gph at 90 deg F
  • Series: ProLine
  • Type: Lowboy Top Connect
  • Water Connection: 3/4 in MNPT
The ProLine® lowboy top connect electric water heater is designed to take up as little room as possible and is the ideal choice for when installation space is limited to tight spaces such as under counters and in crawl spaces. With a 28 gal tank delivering 4500 W, the ENL-30 delivers a first hour rating of 42 gal at an Energy Factor of 0.95. The Coregard™ sacrificial anode helps protect the tank from the corrosive effects of water and is accompanied by a 6-years limited tank warranty.

Looking for model-specific repair or replacement parts? Enter the unit’s serial number into the A.O. Smith Parts Finder.

A.O. Smith® ProLine® Electric Water Heater, Lowboy, Series: ENLB-40, 38 gal Tank, 240V, 4500 W, 1 ph, 3/4 in MNPT Water Connection, (2) Copper/Incoloy® Heating Element, 0.92 Energy Factor, 21 gph at 90 deg F Rise Recovery, 150 psi, ASME Yes/No: No, 23 in W x 32 in H
  • Features
  • Includes
  • Enhanced heating elements - Dual 4500 W elements for fast recovery and reliable operation, Incoloy® stainless steel lower element lasts longer than a standard copper element
  • Dynaclean™ diffuser dip tube - Helps reduce lime and sediment buildup, maximizes hot water output, made from long-lasting PEX cross-linked polymer
  • High energy factors - Eco-friendly non-CFC foam insulation, heat traps and specially designed combustion chamber combine to produce a high energy factor for maximum savings on operating costs
  • Coregard™ anode rod - Have a stainless steel core that extends the life of the anode rod allowing superior tank protection for longer than standard anode rods
  • Blue Diamond® glass coating - Provides superior corrosion resistance compared to industry standard glass lining
  • Enhanced-flow brass drain valve - Our residential water heaters have a solid brass, tamper-resistant, enhanced-flow, ball type, drain valve
  • Uses a standard female hose fitting that allows for fast and easy draining during maintenance
  • Designed for easy operation, this valve includes an integral screwdriver slot that features a 1/4 turn (open/close) radius, which not only permits full straight-through water flow but also a quick and positive shut off
  • Approved for manufactured housing - All residential electric water heaters are compliant with HUD standards for mobile homes/manufactured housing
  • Design listed by underwriters laboratories - Certified at 300 psi test pressure and 150 psi working pressure
  • Listed according to UL 174 standards governing storage tank-type electric water heaters
  • Magnesium anode rods for maximum corrosion protection
  • Models ship with a supplied insulation blanket
Insulation Blanket