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Janitrol GUN125-5B gas furnace Parts
Here are the diagrams and repair parts for Janitrol 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 #18224-08
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Secondary Air Door (gus100-4)
Part #18820-08
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Gas Burner
Part #B18225-01
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
Manifold Bra
Part #18159-01
The manufacturer no longer makes this part, and there's no substitute part
Misc. electrical/hardware diagram
Rubber Sleev
Part #B18104-01
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
Blower assembly diagram
Blwr Asm,ser
Part #18682-04S
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Manifold, 4
Part #B18264-14
The manufacturer no longer makes this part, and there's no substitute part
Blower assembly diagram
Motor
Part #B13400-12
The manufacturer no longer makes this part, and there's no substitute part
Repair guides for chest freezers
How to replace a freezer compressor start relay
The compressor start relay starts the compressor. If the compressor won’t start, follow these steps to replace a defect…
Repair time and Difficulty
15 minutes or less
How to replace a freezer temperature control thermostat
The cold control thermostat regulates the freezer temperature. A defective cold control thermostat can prevent the compr…
Repair time and Difficulty
15 minutes or less
How to replace a freezer lid gasket
The lid gasket prevents air and moisture from entering the freezer when the lid is closed. Follow these steps to replace…
Repair time and Difficulty
30 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.…
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