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AO Smith
Gas Water Heater

Model # GPS-75 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GPS-75 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 10 parts  |
Ao Smith Water Heater Gas Control Valve 9005964005
#1

Cabinet assy diagram

Ao smith water heater gas control valve

Part #9005964005

Replaced by #100110776

?
Manufacturer substitution
This part replaces 9005964005. Substitute parts can look different from the original.
$408.33
In Stock
Anode Rod 9003892005
#7

Cabinet assy diagram

Anode rod

Part #9003892005

Replaced by #100109594

?
Manufacturer substitution
This part replaces 9003892005. Substitute parts can look different from the original.
$55.56
In Stock
Ao Smith Inlet Tube 9004314005
#10

Cabinet assy diagram

Ao smith inlet tube

Part #9004314005

Replaced by #100109784

?
Manufacturer substitution
This part replaces 9004314005. Substitute parts can look different from the original.
$76.67
In Stock
Ao Smith Nipple 9003743015
#11

Cabinet assy diagram

Ao smith nipple

Part #9003743015

Replaced by #100109450

?
Manufacturer substitution
This part replaces 9003743015. Substitute parts can look different from the original.
$43.33
In Stock
Ao Smith Water Heater Exhaust Vent Blower Assembly 9004027005
#NI

Cabinet assy diagram

Ao smith water heater exhaust vent blower assembly

Part #9004027005

Replaced by #100109673

?
Manufacturer substitution
This part replaces 9004027005. Substitute parts can look different from the original.
$660.00
In Stock
Water Heater Burner Igniter 9003626005
#5

Cabinet assy diagram

Water heater burner igniter

Part #9003626005

Replaced by #100109355

?
Manufacturer substitution
This part replaces 9003626005. Substitute parts can look different from the original.
$160.00
In Stock
2nd Anode Out/heat Trap N/A
#NI

Cabinet assy diagram

2nd anode out/heat trap

Part #N/A

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

Water Heater Burner Assembly 9006747005
#2

Cabinet assy diagram

Water heater burner assembly

Part #9006747005

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

Drain Valve 9001870015
#8

Cabinet assy diagram

Drain valve

Part #9001870015

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

T&p Valve 9003484005
#NI

Cabinet assy diagram

T&p valve

Part #9003484005

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

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

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Why isn't my water heater heating my water?

Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

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

Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…

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

Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…

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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?

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?

Main causes: faulty pressure relief valve, water is overheating…

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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

Wiring schematic symbols explained video

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Using a wiring schematic to trace a current video

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