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Goodman GUN125-5B gas furnace

Goodman GUN125-5B gas furnace Parts

Here are the diagrams and repair parts for Goodman GUN125-5B gas furnace, as well as links to manuals and error code tables, if available.

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Browse Parts for GUN125-5B Gas Furnace

  • 5 Mfd 440/37 for Goodman GUN125-5B - Part TRCF5

    Misc. electrical/hardware diagram

    Capacitor 5/

    Part #B9456-50

    Replaced by #TRCF5

    Info Icon
    Manufacturer substitution
    This part replaces B9456-50. Substitute parts can look different from the original.
    In Stock
    $29.15
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    Qty
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  • Gas Valve for Goodman GUN125-5B - Part 12826-06S

    Gas train diagram

    Gas Valve

    Part #12826-06S

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

  • Furnace Inducer Vent Motor Assembly for Goodman GUN125-5B - Part B1859001S

    Misc. electrical/hardware diagram

    Furnace Inducer Vent Motor Assembly

    Part #B1859001S
    In Stock
    $1598.95
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  • Furnace Blower Fan Wheel for Goodman GUN125-5B - Part D6723306S

    Blower assembly diagram

    Blower Wheel

    Part #B13680-47

    Replaced by #D6723306S

    Info Icon
    Manufacturer substitution
    This part replaces B13680-47. Substitute parts can look different from the original.
    In Stock
    $150.10
    7% OFF Phone Price : $162.10Info Icon
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    Qty
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  • Heat Exchange for Goodman GUN125-5B - Part 0257F00067

    Heat exchanger assembly diagram

    Heat Exchange

    Part #18212-31S

    Replaced by #0257F00067

    Info Icon
    Manufacturer substitution
    This part replaces 18212-31S. Substitute parts can look different from the original.
    In Stock
    $836.76
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  • Motor Run Capacitor for Goodman GUN125-5B - Part 12908

    Blower assembly diagram

    Capacitor 10

    Part #B9456-52

    Replaced by #12908

    Info Icon
    Manufacturer substitution
    This part replaces B9456-52. Substitute parts can look different from the original.
    In Stock
    $98.90
    11% OFF Phone Price : $110.90Info Icon
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    Qty
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  • Furnace Range Burner Orifice for Goodman GUN125-5B - Part B1789342

    Gas train diagram

    Gas Orifice

    Part #B17893-42

    Replaced by #B1789342

    Info Icon
    Manufacturer substitution
    This part replaces B17893-42. Substitute parts can look different from the original.
    In Stock
    $32.30
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    Qty
    Plus Item
  • Furnace Temperature Limit Switch for Goodman GUN125-5B - Part 1370906S

    Heat exchanger assembly diagram

    Limit, 150f,

    Part #B13700-06

    Replaced by #1370906S

    Info Icon
    Manufacturer substitution
    This part replaces B13700-06. Substitute parts can look different from the original.
    In Stock
    $108.62
    Minus Item
    Qty
    Plus Item
  • Central Air Conditioner Air Handler Blower Wheel for Goodman GUN125-5B - Part B1368016S

    Blower assembly diagram

    Blower Wheel

    Part #B13680-16

    Replaced by #B1368016S

    Info Icon
    Manufacturer substitution
    This part replaces B13680-16. Substitute parts can look different from the original.
    In Stock
    $235.99
    Minus Item
    Qty
    Plus Item
  • Transformer for Goodman GUN125-5B - Part B11416-00

    Misc. electrical/hardware diagram

    Transformer

    Part #B11416-00

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

Symptoms for electric water heaters

Why does the temperature of my hot water fluctuate?

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

Read more

Why does my water heater's heating element fail often?

Main causes: excessive tank sediment, high voltage supply…

Read more

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…

Read more

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.…

Read more

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…

Read more

Repair time and Difficulty

 30 minutes or less

Effective articles & videos to help repair your furnaces

View all
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.…

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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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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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