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 5 204 204
Easy standard connections Haven't had unit long enough to compare energy use. Easy programming features. December 12, 2014
if this product is as good as my last one it will be great. I had an older model unit of this type and have been very pleased with the performance of this type of water heater. I installed the previous unit,as well as the new unit and did not have any problems with the plumbing hook-ups as well as the electrical connections. December 8, 2014
I like the vacation feature Easy to install, good warranty, easy to program and set. December 4, 2014
Great Features, Nice cabinet looks clean So far I just love this water heater even tho it is a 40 gal where the one that was replaced was a 50 gal. I love that it is digital and you can adjust the temp if you want to. The stainless makes it look very clean. December 1, 2014
great features very easy instalation. recommend this unit water heated very quickly simple user guide. November 29, 2014
Easy install, easy to use control panel, works really well! one minor flaw I replaced a 15 year old unit of another brand after the output flex hose sprang a leak and I noticed the unit was badly corroding around the bottom. I did have to relocate the output side pipe and redo some plumbing because of the difference in design and width, and widen the closet opening. That was no big deal since I'm a fair handyman. The installation was easy (did it without any help). The electronic control panel is easy to use, is nicely backlit with LED light, and has good features like a "Vacation" setting and diagnostic functions. I found that leaving it at the factory setting of 120* provides plenty of hot water (I had to boost my previous unit to 125*). It looks good and performs well! One minor flaw: The drain cock is placed too close to the bottom of the unit. With the sidewall of most drip pans being 2"-3" high, the drain cock is not high enough to clear the sidewall to attach a drain line. While most people don't regularly maintenance their water heaters, I do. Also the drain cock is plastic, rather than brass. November 28, 2014
This water heater is an excellent value! My wife and I usually buy Whirlpool appliances because they are reliable, perform well, are reasonably priced, and the company stands behind their products. This water heater is a replacement for a comparable model they we purchased many years ago. November 28, 2014
Seems to have a lot of energy saving features We have not used it enough yet to be able to review. November 27, 2014
great water heater we installed this water heater with ease. we did want the company to deliver it and install it as the advertisement stated but that is false. also the so called rebate that comes with it is for only customers that had a gas water heater transferring to electric water heater, but wasn't described on the rebate paper. the price is a little high but worth it from what little time we have had the water heater. November 24, 2014
This waterheater had everything I was looking for and I was sold on the warrenty offered. I have other Whirlpool appliances and have come to have great confidence in there quality and performance. November 23, 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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