AO Smith
Electric Water Heater

Model # ECT52 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith ECT52 water heater, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 23 parts  |

Anode Rod 183523-026
#9

Water heater diagram

Anode rod

Part #183523-026

Replaced by #9003944005

?
Manufacturer substitution
This part replaces 183523-026. Substitute parts can look different from the original.
BEST SELLER
$37.27
12% OFF Phone Price : $42.27
In Stock
Access Panel 181260-000
#1

Water heater diagram

Access panel

Part #181260-000

Replaced by #9003900005

?
Manufacturer substitution
This part replaces 181260-000. Substitute parts can look different from the original.
This item is not returnable
$17.69
10% OFF Phone Price : $19.69
In Stock
Box Cover 184660-000
#20

Water heater diagram

Box cover

Part #184660-000

Replaced by #184660-000

?
Manufacturer substitution
This part replaces 184660-000. Substitute parts can look different from the original.
In Stock
Element 042286-022
#6

Water heater diagram

Element

Part #042286-022

Replaced by #9000095015

?
Manufacturer substitution
This part replaces 042286-022. Substitute parts can look different from the original.
$38.21
12% OFF Phone Price : $43.21
In Stock
Temperature Valve 043151-000
#10

Water heater diagram

Temperature valve

Part #043151-000

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

Bracket 184608-000
#12

Water heater diagram

Bracket

Part #184608-000

Replaced by #9000309

?
Manufacturer substitution
This part replaces 184608-000. Substitute parts can look different from the original.
This item is not returnable
$17.69
10% OFF Phone Price : $19.69
In Stock
Terminal Cover 182117-001
#15

Water heater diagram

Terminal cover

Part #182117-001

Replaced by #9006078015

?
Manufacturer substitution
This part replaces 182117-001. Substitute parts can look different from the original.
In Stock
Thermostat 182359-000
#16

Water heater diagram

Thermostat

Part #182359-000

Replaced by #9004714115

?
Manufacturer substitution
This part replaces 182359-000. Substitute parts can look different from the original.
$26.19
16% OFF Phone Price : $31.19
In Stock
Insulation 181639-003
#18

Water heater diagram

Insulation

Part #181639-003

Replaced by #9003971005

?
Manufacturer substitution
This part replaces 181639-003. Substitute parts can look different from the original.
In Stock
Thermostat 182354-000
#13

Water heater diagram

Thermostat

Part #182354-000

Replaced by #9004428115

?
Manufacturer substitution
This part replaces 182354-000. Substitute parts can look different from the original.
$48.15
9% OFF Phone Price : $53.15
In Stock

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…

Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…

Main causes: water supply needs chlorine treatment, anode rod too reactive…

Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…

Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating elemen…

Main causes: faulty pressure relief valve, water is overheating…

Repair guides for electric water heaters

How to replace a water heater temperature and pressure (T&P) relief valve

How to replace a water heater temperature and pressure (T&P) relief valve

Replace a broken temperature/pressure (T&P) relief valve on an electric water heater using these instructions.…

Repair difficulty
Time required
 15 minutes or less
How to replace a water heater drain valve

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

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 i…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your water heaters

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

Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

Find out what’s wrong with your appliance by following a circuit.…

Easy DIY water heater repairs

Easy DIY water heater repairs

Read about some water heater repairs that you can easily do yourself.…