Whirlpool
Electric Water Heater

Model #ES40R123-45D Whirlpool water heater

Here are the repair parts and diagrams for your Whirlpool ES40R123-45D water heater. 

The diagram(s) below can help you find the right part.  If you’d like help, we invite you to call our customer service number at the top of the page, or click chat.

On this page, you can also find any manuals, installation guides and error code tables associated with this model.

For advice on diagnosing problems with appliances, lawn & garden equipment and other products, check out the videos, repair guides and articles in our DIY section.

Showing 10 of 20 parts

Water Heater Electronic Thermostat

#4

Water heater Diagram

$113.31

In Stock

Water Heater Dip Tube

#12

Water heater Diagram

Water heater dip tube

Part #4710830
This item is not returnable
$3.88

In Stock

Water Heater Heating Element Access Cover

#5

Water heater Diagram

Water heater heating element access cover

Part #2610109
This item is not returnable
$2.43

In Stock

Water Heater Smart Grid Wire Harness

#15

Water heater Diagram

$12.48

In Stock

Water Heater Control Panel Assembly

#1

Water heater Diagram

$81.32

In Stock

Water Heater High-Temperature Sensor

#14

Water heater Diagram

$25.61

In Stock

Temperature and Pressure Valve

#8A

Water heater Diagram

Temperature and pressure valve

Part #6905042

The manufacturer no longer makes this part, and there's no substitute part

Water Heater Heating Element Gasket

#3

Water heater Diagram

Water heater heating element gasket

Part #100269982
?
Manufacturer substitution
This part replaces 4400032. Substitute parts can look different from the original.
This part replaces 4400032
$11.39

In Stock

Heat Trap

#11

Water heater Diagram

Heat trap

Part #100093581
?
Manufacturer substitution
This part replaces 6900429. Substitute parts can look different from the original.
This part replaces 6900429
$13.73

In Stock

T&p Valve

#8

Water heater Diagram

T&p valve

Part #6905041

The manufacturer no longer makes this part, and there's no substitute part

Symptoms common to all water heaters

Choose a symptom to see related water heater repairs.

Main causes: water supply needs chlorine treatment, anode rod too reactive
Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating element
Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excessive tank sediment
Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failure, bad thermocouple
Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve assembly failure
Main causes: faulty pressure relief valve, water is overheating
Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element, cracked tank

Repair guides for electric water heaters

July 1, 2015
By Lyle Weischwill
How to replace a water heater drain valve

If the drain valve on your electric water heater is leaking water, replace it following these step-by-step instructions.

Repair difficulty
Time required
 30 minutes or less
How to replace an electric water heater anode rod

If your hot water begins to smell like rotten eggs, replace the anode rod with a zinc-aluminum anode rod following the instructions in this repair guide.

Repair difficulty
Time required
 30 minutes or less
How to replace an electric water heater thermostat

If the water temperature fluctuates or you don't get enough hot water, follow these instructions to replace your water heater's thermostat.

Repair difficulty
Time required
 30 minutes or less

Articles and videos common to all water heaters

Use the advice and tips in these articles and videos to get the most out of your water heater.

November 1, 2018

How to read a wiring schematic video

By Sears PartsDirect staff

Learn how to decipher symbols so you can buy the right part for your problem.

October 31, 2018

Cleaning your appliances after a drinking water advisory

By Julie Riebe

Find out how to clean and flush household appliances once a boil water advisory is lifted.

August 1, 2015

Water heater common questions

By Sears PartsDirect staff

These common questions and answers can help you make the most of your water heater.