AO Smith
Gas Water Heater

Model #GPS-75 Official AO Smith water heater

Here are the diagrams and repair parts for AO Smith GPS-75 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:

  • Click a diagram to see the parts shown on that diagram.
  • 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

    Showing 10 of 10 parts

    Water Heater Anode Rod#7

    Cabinet assy Diagram

    Anode rod

    Part #9003892005
    Replaced by #9003892005
    ?
    Manufacturer substitution
    This part replaces 9003892005. Substitute parts can look different from the original.
    BEST SELLER
    In Stock
    $36.85 | 
    14% OFF 
    Phone Price: $42.99
    Inlet Tube#10

    Cabinet assy Diagram

    Inlet tube

    Part #9004314005
    In Stock
    $50.49 | 
    9% OFF 
    Phone Price: $55.49
    Water Heater Gas Control Valve#1

    Cabinet assy Diagram

    In Stock
    $459.23
    Water Heater Exhaust Vent Blower Assembly#NI

    Cabinet assy Diagram

    In Stock
    $620.58
    Nipple#11

    Cabinet assy Diagram

    Nipple

    Part #9003743015
    In Stock
    $18.66
    Water Heater Burner Igniter#5

    Cabinet assy Diagram

    Water heater burner igniter

    Part #9003626005
    Replaced by #9003626005
    ?
    Manufacturer substitution
    This part replaces 9003626005. Substitute parts can look different from the original.
    In Stock
    $139.93
    T&P VALVE#NI

    Cabinet assy Diagram

    T&p valve

    Part #9003484005

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

    Drain Valve#8

    Cabinet assy Diagram

    Drain valve

    Part #9001870015

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

    Water Heater Burner Assembly#2

    Cabinet assy Diagram

    Water heater burner assembly

    Part #9006747005

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

    2ND ANODE OUT/HEAT TRAP#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

    Symptoms common to all 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 failure, bad thermocouple
    Main causes: water supply needs chlorine treatment, anode rod too reactive
    Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excessive tank sediment
    Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating element
    Main causes: faulty pressure relief valve, water is overheating
    Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve assembly failure
    Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element, cracked tank

    Articles and videos common to all water heaters

    Use the advice and tips in these articles and videos to get the most out of your water heater.

    October 24, 2022

    Easy DIY appliance repairs that anyone can do

    By Lyle Weischwill

    Get advice on simple DIY fixes for appliances that you can safely do on your own.

    August 18, 2021

    Wiring schematic symbols explained video

    By Lyle Weischwill

    Learn some of the most common symbols found in a wiring diagram and what they mean.

    April 10, 2020

    Cleaning your appliances after a drinking water advisory

    By Julie Riebe

    Find out how to clean and flush household appliances once a boil water advisory is lifted.