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Goodman GUS125-5 gas furnace

Goodman GUS125-5 gas furnace Parts

Here are the diagrams and repair parts for Goodman GUS125-5 gas furnace, as well as links to manuals and error code tables, if available.

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Browse Parts for GUS125-5 Gas Furnace

  • Furnace Burner Flame Sensor for Goodman GUS125-5 - Part B11726-05

    Gas train diagram

    Furnace Burner Flame Sensor

    Part #B11726-05

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

  • Flue Collect for Goodman GUS125-5 - Part 18812-16

    Heat exchanger assembly diagram

    Flue Collect

    Part #18812-16

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

  • Burner Box T for Goodman GUS125-5 - Part 18823-02

    Heat exchanger assembly diagram

    Burner Box T

    Part #18823-02

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

  • Flue Collector (gun100-4b, Gus100-4) for Goodman GUS125-5 - Part 18812-15

    Heat exchanger assembly diagram

    Flue Collector (gun100-4b, Gus100-4)

    Part #18812-15

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

  • Secondary He for Goodman GUS125-5 - Part B18646-02

    Heat exchanger assembly diagram

    Secondary He

    Part #B18646-02

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

  • Air Pressure for Goodman GUS125-5 - Part B13701-31

    Misc. electrical/hardware diagram

    Air Pressure

    Part #B13701-31

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

  • Furnace Blower Door for Goodman GUS125-5 - Part 18223-42

    Casing diagram

    Furnace Blower Door

    Part #18223-42

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

  • Casing Assembly for Goodman GUS125-5 - Part 18161-40S

    Casing diagram

    Casing Assembly

    Part #18161-40S

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

  • Secondary Air Door (gus075-3) for Goodman GUS125-5 - Part 18820-07

    Heat exchanger assembly diagram

    Secondary Air Door (gus075-3)

    Part #18820-07

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

  • Air Pressure for Goodman GUS125-5 - Part B13701-07

    Misc. electrical/hardware diagram

    Air Pressure

    Part #B13701-07

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

Symptoms for electric water heaters

Main causes: thermostats need adjustment, bad heating elements, faulty thermostats, tank sediment build-up, broken dip t…

Main causes: excessive tank sediment, high voltage supply…

Repair guides for electric water heaters

How to replace a water heater element

How to replace a water heater element

If your water heater runs out of hot water quickly and one of the two heating elements has failed, replace the element f…

Repair time and Difficulty

 30 minutes or less
How to replace a water heater temperature and pressure (T&P) relief valve

How to replace a water heater temperature and pressure (T&P) relief valve

Replace a broken temperature/pressure (T&P) relief valve on an electric water heater using these instructions.…

Repair time and Difficulty

 15 minutes or less
How to replace an electric water heater thermostat

How to replace an electric water heater thermostat

If the water temperature fluctuates or you don't get enough hot water, follow these instructions to replace your water h…

Repair time and Difficulty

 30 minutes or less

Effective articles & videos to help repair your furnaces

How to get your furnace ready for winter

How to get your furnace ready for winter

Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…

2023 HVAC regulation changes and how they may affect you

2023 HVAC regulation changes and how they may affect you

Find out how new DOE standards going into effect in 2023 can affect you and what you need to do.…

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