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Model # GPDX75100 Official AO Smith water heater
Here are the diagrams and repair parts for Official AO Smith GPDX75100 water heater, as well as links to manuals and error code tables, if available.
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GPDX75100 Water Heaters
#14
Water heater diagram
Anode rod
Part #183523-039
Replaced by #100109594
?
Manufacturer substitution
This part replaces 183523-039. Substitute parts can look different from the original.
$55.56
In Stock
#13A
Water heater diagram
Inlet tube
Part #183901-040
Replaced by #9002432005
?
Manufacturer substitution
This part replaces 183901-040. Substitute parts can look different from the original.
$26.99
In Stock
#12
Water heater diagram
Temperature valve
Part #043151-000
The manufacturer no longer makes this part, and there's no substitute part
#13
Water heater diagram
Dip tube
Part #183900-028
Replaced by #100109381
?
Manufacturer substitution
This part replaces 183900-028. Substitute parts can look different from the original.
$24.29
In Stock
#NI
Water heater diagram
Nipple
Part #184633-002
Replaced by #100108409
?
Manufacturer substitution
This part replaces 184633-002. Substitute parts can look different from the original.
$25.71
In Stock
#33C
Water heater diagram
Adapter
Part #196057-000
The manufacturer no longer makes this part, and there's no substitute part
#25A
Water heater diagram
Door clip
Part #0002400720
The manufacturer no longer makes this part, and there's no substitute part
#21
Water heater diagram
Drain valve
Part #026273-007
The manufacturer no longer makes this part, and there's no substitute part
#6
Water heater diagram
Blower
Part #0012400490
The manufacturer no longer makes this part, and there's no substitute part
#22A
Water heater diagram
Manifold
Part #184323-002
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.
Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…
Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…
Main causes: water supply needs chlorine treatment, anode rod too reactive…
Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…
Main causes: faulty pressure relief valve, water is overheating…
Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…
Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating elemen…
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.

Learn how to decipher symbols so you can buy the right part for your problem.…

Read about some water heater repairs that you can easily do yourself.…

These common questions and answers can help you make the most of your water heater.…