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AO Smith
Gas Water Heater

Model # GPSH40100 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GPSH40100 water heater, as well as links to manuals and error code tables, if available.

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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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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 45 parts  |
Restrictor 184502-000
#29

Water heater diagram

Restrictor

Part #184502-000

$10.99
In Stock
Water Heater Owner's Manual 184674-001
#NI

Water heater diagram

Water heater owner's manual

Part #184674-001

$8.49
In Stock
Restrictor 184501-000
#28

Water heater diagram

Restrictor

Part #184501-000

This item is not returnable
$2.16
In Stock
Access Parts 183509-002
#23

Water heater diagram

Access parts

Part #183509-002

$54.49
In Stock
Combo.valv 183760
#20

Water heater diagram

Combo.valv

Part #183760

Replaced by #100109724

?
Manufacturer substitution
This part replaces 183760. Substitute parts can look different from the original.
$392.50
In Stock
Igniter Assembly 184047
#17

Water heater diagram

Igniter assembly

Part #184047

Replaced by #100109355

?
Manufacturer substitution
This part replaces 184047. Substitute parts can look different from the original.
$160.00
In Stock
Valve 181508-31
#18

Water heater diagram

Valve

Part #181508-31

Replaced by #100109724

?
Manufacturer substitution
This part replaces 181508-31. Substitute parts can look different from the original.
$392.50
In Stock
Valve 76527-3
#43

Water heater diagram

Valve

Part #76527-3

Replaced by #100108279

?
Manufacturer substitution
This part replaces 76527-3. Substitute parts can look different from the original.
$32.22
In Stock
Anode Rod 183523-26
#1

Water heater diagram

Anode rod

Part #183523-26

Replaced by #100109624

?
Manufacturer substitution
This part replaces 183523-26. Substitute parts can look different from the original.
$31.11
In Stock
Switch 185135-000
#8

Water heater diagram

Switch

Part #185135-000

Replaced by #100110013

?
Manufacturer substitution
This part replaces 185135-000. Substitute parts can look different from the original.
$105.56
In Stock

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