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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
Heat exchanger assembly diagram
Secondary Ai
Part #18224-10
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Manifold Bra
Part #18159-01
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Burner Assembly
Part #B18225-11
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Burner Assembly
Part #B18225-10
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Flue Collect
Part #18812-16
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Secondary Ai
Part #18820-06
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Ignition Mod
Part #B13707-26
The manufacturer no longer makes this part, and there's no substitute part
Casing diagram
Top Channel (gun125-5b, Gus125-5)
Part #18221-06S
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Secondary He
Part #B18646-00
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Manifold, 2
Part #B18264-12
The manufacturer no longer makes this part, and there's no substitute part
Symptoms for upright freezers
Main causes: clogged or frozen defrost drain tube…
Repair guides for upright freezers
How to replace a freezer electronic control board
The electronic control board manages the compressor to control freezer temperature. Replace the control board using the…
Repair time and Difficulty
45 minutes or less
How to replace a freezer thermistor
When the thermistor can’t sense the freezer temperature, the freezer is colder or warmer than the set temperature. Follo…
Repair time and Difficulty
45 minutes or less
How to replace a freezer door switch
When the door switch fails, the freezer can’t detect that the door is closed. Follow the steps in this repair guide to r…
Repair time and Difficulty
15 minutes or less
Effective articles & videos to help repair your furnaces
Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…
Find out how new DOE standards going into effect in 2023 can affect you and what you need to do.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
Parts & More
Parts
Harness 95-0678Home Electronics Remote Control 143-9-4100-29400Home Electronics Bracket 012-09914Home Electronics Integrated Circuit 23676015Control Panel G432-8K01-W1Bearing CA157262Screw 90009-ZG3-000Use & Care/i 49-7244Home Electronics Screw 22709521Home Electronics Coil VLQ0052Pin 9R196603Pulley 71-41901-15Home Electronics Transformer TLF6901Bolt 92301-06008-0HWasher 333103601Home Electronics Extension Cable 197911Ane201ag40aq 1590553A19Lens VXW1116Cooking Appliance Wire and Terminal 318231917Insulator PSEL-A031JBE0