A.O Smith ENJ40 side connect 40 gallon water heater


new in box, never installed, no damage to unit




The ProLine® Lowboy Side 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 38-gallon tank, the ENJ-40 delivers a first hour rating of 46 gallons at an Energy Factor of 0.95. The sacrificial anode helps protect the tank from the corrosive effects of water, and is accompanied by a 6-year limited tank warranty.

Blue Diamond® Glass Coating
Provides superior corrosion resistance compared to industry standard glass lining.
Blue Diamond® Glass coating blend is formulated in the same lab that creates the protection for our industry-leading commercial product line. 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.


  • Compact design
  • 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

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