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AO Smith
Gas Water Heater

Model # FCG75250 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith FCG75250 water heater, as well as links to manuals and error code tables, if available.

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

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 29 parts  |
Draft Hood 39072-4
#14

Water heater diagram

Draft hood

Part #39072-4

$24.49 | 
20% OFF Phone Price : $30.49
In Stock
Restrictor 35405
#17

Water heater diagram

Restrictor

Part #35405

This item is not returnable
$3.05
In Stock
Inlet Tube 183512
#26

Water heater diagram

Inlet tube

Part #183512

Replaced by #100109784

?
Manufacturer substitution
This part replaces 183512. Substitute parts can look different from the original.
$76.67
In Stock
Label 181376
#18

Water heater diagram

Label

Part #181376

Replaced by #181376-000

?
Manufacturer substitution
This part replaces 181376. Substitute parts can look different from the original.
This item is not returnable
$2.49
In Stock
Natural Gas Orifice 181508-21
#5

Water heater diagram

Natural gas orifice

Part #181508-21

Replaced by #9003732005

?
Manufacturer substitution
This part replaces 181508-21. Substitute parts can look different from the original.
$17.69 | 
10% OFF Phone Price : $19.69
In Stock
Burner 194549
#4

Water heater diagram

Burner

Part #194549

Replaced by #9003040005

?
Manufacturer substitution
This part replaces 194549. Substitute parts can look different from the original.
$50.49
In Stock
Burner Tube 194561
#3

Water heater diagram

Burner tube

Part #194561

Replaced by #194561-000

?
Manufacturer substitution
This part replaces 194561. Substitute parts can look different from the original.
$16.99
In Stock
Inner Door 39923
#12

Water heater diagram

Inner door

Part #39923

Replaced by #100109442

?
Manufacturer substitution
This part replaces 39923. Substitute parts can look different from the original.
$30.00
In Stock
Valve 180193-5
#11

Water heater diagram

Valve

Part #180193-5

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

Label 182734
#23

Water heater diagram

Label

Part #182734

Replaced by #182734-000

?
Manufacturer substitution
This part replaces 182734. Substitute parts can look different from the original.
$13.99
In Stock

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

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Why is my water heater making the water too hot?

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

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Why is my water heater's pressure relief valve dripping water?

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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.

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Wiring schematic symbols explained video

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Easy DIY water heater repairs

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