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AO Smith
Gas Water Heater

Model # GCVT40 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GCVT40 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 34 parts  |
Burner Head 183583-001
#4

Water heater diagram

Burner head

Part #183583-001

$30.49
In Stock
Screen 183159-000
#1

Water heater diagram

Screen

Part #183159-000

Replaced by #100109216

?
Manufacturer substitution
This part replaces 183159-000. Substitute parts can look different from the original.
$22.86
In Stock
Inlet Tube 183776-026
#13

Water heater diagram

Inlet tube

Part #183776-026

Replaced by #9002543005

?
Manufacturer substitution
This part replaces 183776-026. Substitute parts can look different from the original.
$16.49
In Stock
Burner Tube 183163-002
#6

Water heater diagram

Burner tube

Part #183163-002

Replaced by #9003635005

?
Manufacturer substitution
This part replaces 183163-002. Substitute parts can look different from the original.
$66.49
In Stock
Burner Tube 183450-002
#6A

Water heater diagram

Burner tube

Part #183450-002

Replaced by #9003644005

?
Manufacturer substitution
This part replaces 183450-002. Substitute parts can look different from the original.
$33.99
In Stock
Control Valve 182792-001
#11A

Water heater diagram

Control valve

Part #182792-001

Replaced by #9003639005

?
Manufacturer substitution
This part replaces 182792-001. Substitute parts can look different from the original.
$362.49
In Stock
Orifice 181791-046
#5A

Water heater diagram

Orifice

Part #181791-046

Replaced by #9003643005

?
Manufacturer substitution
This part replaces 181791-046. Substitute parts can look different from the original.
$18.99
In Stock
Insulation 183256-000
#NI

Water heater diagram

Insulation

Part #183256-000

Replaced by #9003716005

?
Manufacturer substitution
This part replaces 183256-000. Substitute parts can look different from the original.
$23.49
In Stock
Anode Rod 183523-029
#2

Water heater diagram

Anode rod

Part #183523-029

Replaced by #100109624

?
Manufacturer substitution
This part replaces 183523-029. Substitute parts can look different from the original.
$31.11
In Stock
Draft Hood 183853-000
#7

Water heater diagram

Draft hood

Part #183853-000

Replaced by #100108368

?
Manufacturer substitution
This part replaces 183853-000. Substitute parts can look different from the original.
$36.67
In Stock

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