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AO Smith
Gas Water Heater

Model # FPD40270 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith FPD40270 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 59 parts  |
Angle,l 181450
#14

Water heater diagram

Angle,l

Part #181450

This item is not returnable
$2.16
In Stock
Natural Gas Orifice 181508-123
#10

Water heater diagram

Natural gas orifice

Part #181508-123

Replaced by #9004327005

?
Manufacturer substitution
This part replaces 181508-123. Substitute parts can look different from the original.
$20.49
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
Installation Assembly 183092
#NI

Water heater diagram

Installation assembly

Part #183092

Replaced by #183092-000

?
Manufacturer substitution
This part replaces 183092. Substitute parts can look different from the original.
$654.49
In Stock
Drain Valve 42037
#53

Water heater diagram

Drain valve

Part #42037

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

Anode Rod 183463-26
#1A

Water heater diagram

Anode rod

Part #183463-26

Replaced by #100109434

?
Manufacturer substitution
This part replaces 183463-26. Substitute parts can look different from the original.
$36.67
In Stock
Tee Tube 181762
#38

Water heater diagram

Tee tube

Part #181762

Replaced by #181762-000

?
Manufacturer substitution
This part replaces 181762. Substitute parts can look different from the original.
$67.99
In Stock
Restrictor 182275
#24

Water heater diagram

Restrictor

Part #182275

Replaced by #182275-000

?
Manufacturer substitution
This part replaces 182275. Substitute parts can look different from the original.
$20.49
In Stock
Exhaust Ay 181528
#NI

Water heater diagram

Exhaust ay

Part #181528

Replaced by #100108686

?
Manufacturer substitution
This part replaces 181528. Substitute parts can look different from the original.
$119.00
In Stock
Bi-metal Tip 21224
#26

Water heater diagram

Bi-metal tip

Part #21224

Replaced by #9004660105

?
Manufacturer substitution
This part replaces 21224. Substitute parts can look different from the original.
$72.99
In Stock

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Why is there water in my water heater's drain pan?

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Why does my hot water smell like rotten eggs?

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

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Why isn't my water heater making enough hot water?

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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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