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AO Smith
Gas Water Heater

Model # FCG100250 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith FCG100250 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:

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  • 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”.

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

Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 28 parts  |
Restrictor 35405
#17

Water heater diagram

Restrictor

Part #35405

This item is not returnable
$3.05
In Stock
Draft Hood 39072-4
#14

Water heater diagram

Draft hood

Part #39072-4

$24.49 | 
20% OFF Phone Price : $30.49
In Stock
Collar 20172-21
#10

Water heater diagram

Collar

Part #20172-21

Replaced by #9004610115

?
Manufacturer substitution
This part replaces 20172-21. Substitute parts can look different from the original.
$15.99
In Stock
Label 41259
#19

Water heater diagram

Label

Part #41259

Replaced by #041259-000

?
Manufacturer substitution
This part replaces 41259. Substitute parts can look different from the original.
This item is not returnable
$2.49
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
Label 182798
#21

Water heater diagram

Label

Part #182798

Replaced by #182798-000

?
Manufacturer substitution
This part replaces 182798. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
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
Label 183300
#20

Water heater diagram

Label

Part #183300

Replaced by #183300-000

?
Manufacturer substitution
This part replaces 183300. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Inlet Tube 183712
#26

Water heater diagram

Inlet tube

Part #183712

Replaced by #9006758005

?
Manufacturer substitution
This part replaces 183712. Substitute parts can look different from the original.
$41.99
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

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