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 5 146 146
easy to install. easy to set up. To start with , the Whirlpool hot water heater was packaged very well for safe transport. The directions made it very easy to install. Purchasing a hot water tank installation kit was recommended and well worth it. The water heater I purchased has a computer that you can choose to use or not. The directions mad it very easy to set up. I believe using the smart system will save me money. To finish it seems to be well made and comes with a 12 year warranty. I highly recommend it. April 14, 2014
This product has great features I like the electronic read out so that when something goes wrong with the elements I will know exactly what is going wrong! I like being able the easily change the temperature, also. I can't tell about my energy bill yet. My house is all-electric. April 13, 2014
So far so good. It's only been installed two weeks but so far it looks good. Did have to increase the temp to 130 degrees because we like a little hotter shower. April 11, 2014
way better than older models This is much bigger than the older models. Make sure you have enough room. I don't know how much I will save yet on my energy bill yet,. Most places for homeowers have kits for no soider plumming. Made it easy install. April 9, 2014
Great product, 12 year warranty, easy installation It was just an easy installation, took more time to go get it than it did to install. Great product, I like the digital pad / control. April 8, 2014
Has very good features Just had it installed want to use this heater for a few weeks before writing a review. If asked later on I would be more then glad to write a review. April 8, 2014
Good features, but have heard that reliability is a problem. I'll find out. P/T valve was less than hand tight. Was told it would have made a huge mess if I hadn't noticed it. Instructions do not say that it is loose or to check. Lower access cover screw was loose and will not tighten. April 7, 2014
what we needed excellent & the service from Lowe's great also the installer was very good & prompt. April 7, 2014
Second Whirlpool Brand Water Heater I bought this unit to replace a 10+ year old Whirlpool water heater that needed a control board. I figured if the first one lasted over 10 years, why go with a different brand. Installing it was a breeze. I only wish the drain valve was at a slightly different angle so connecting a hose was a bit easier. Other than that, I have no complaints. Hopefully, this new unit will hold up as well as the previous one. April 7, 2014
This has great features Just installed today. was an item that I had been looking into can't say much haven't had it long. April 4, 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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