40 Gallon Energy Smart® Electric Water Heater - 12 Year Warranty

40 Gallon Energy Smart® Electric Water Heater - 12 Year Warranty

Model: ES40R123-45D    Lowe's Item* #: 345708


  • Touch screen electronic user interface makes it easy to set temperature, operating mode, and engage safety lock feature
  • Choice of operating modes; Standard, Energy Smart® (intelligently reacts to hot water use patterns to reduce standby heat loss), and Vacation saves you money while you are away
  • Electronic thermostat employs thermistors to sense temperature, and has no mechanical parts to wear - making it more accurate and reliable than conventional thermostats
  • SmartPort equipped, means Energy Smart® is smart grid ready for future utility management, as well as plug and play ready for home automation applications
  • Premium incoloy stainless heating elements are more efficient and last longer than conventional elements
  • Extra thick environmentally friendly polyurethane foam insulation reduces heat loss for maximum efficiency, saves money
  • Self-cleaning dip tube reduces tank sediment, ensuring long tank life and optimal efficiency
  • Dry fire protection ensures the installer does not accidentally burn out the upper element when power is turned on, if the water level in the tank is not full
  • Factory installed temperature and pressure relief valve ensures safe operation
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Product Dimensions
Weight:116 lbs.
Configuration and Overview
Capacity:40 Gallons
Family Size:3
Energy Star Certified:No
Energy Factor:0.95
Annual Cost of Operations:$555
LCD Display:Yes
Self Cleaning:Yes
Warranty Tank:12 Years
Warranty Parts:12 Years
Warranty Labor:1 Year
Max Wattage:4500
Emissions Standards:No Emissions
Foam Insulation:3 inches
Water Connection Location:Top
Water Connection Size:3/4 inch
T&P Relief Valve:Yes
Energy & Eco-Friendly
Energy Factor:0.95
Energy Smart®:Self-Diagnostic Electronic Control
40 Gallon Electric Water Heater - ES40R123-45D 4.7 5 168 168
Tight Installation was performed over a brief period of time, and instantly our house was transformed into a water-filled oasis. Thanks to the good folks at Whirlpool for making a great product. July 16, 2014
Nice and compact The first thing that caught my eye was the color, not the same old white heaters. Then of course just having to press a couple of buttons to change the water temperature as opposed to removing a panel is great. July 7, 2014
Easy to install, looks good Just installed it, and everything started working fine. I need some time to really evaluate the performance, but after just one day the water heater provided enough hot water for my wife and I to use. July 1, 2014
easy to install with great instructions to follow. Easy to install with great instructions and online assistance if required. June 29, 2014
great features Easy to install, very nice design, so far I am very impressed waiting to see first electric bill if savings are good June 27, 2014
I installed one for my daughter about 6 mounths ago. I liked the way it worked so I bought one for my self this product has great features. I like the way it determines the time of usage and adjust for it. June 24, 2014
good features Just install works really well, easy temp set like so far. June 20, 2014
pleased so far I wanted the 12-yr warranty and 50 gallon model, but that wouldn't fit in space available, so I got the 40-gallon version. I'm anxious to check out the vacation mode and see how this heater works in the long term. Getting a drain hose on with obstruction of drip pan may be problematic in future, but I think it can be done. I might recommend a little more free space between bottom and tank drain so the drain is easier to use. June 11, 2014
Nice look and great features. We've had the water heater for less than a week -- so not a long time to evaluate it -- but so far, I really like it. It has a very nice appearance, works very well, and I like the touch screen controls. June 7, 2014
Review Reviewing is quite early this is “estimated” on quality and performance. Based on past Whirlpool water heaters and appliances, they have all preformed quite well. Great product water tanks in the past have lasted about what the warranty predicted. Thank You Patrick Cavanaugh June 2, 2014

Owners Manual
Comprehensive information about your new appliance - from getting started to cleaning and maintenance - with answers to frequently asked questions.

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Troubleshooting & Repair

IMPORTANT - Read and follow the printed Installation Instructions that came with your water heater. The printed Instructions and product labels contain model-specific information, important warnings and safety notices. If you lack the necessary skills to install, troubleshoot or repair the water heater, get help from a qualified person.

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