Get free shipping on your order, with any water filter subscription. Find my filter

Open Hamburger Menu
Sears Parts Direct
Tips to find your model number
Janitrol GUN125-5B gas furnace

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.

By Schematic
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for GUN125-5B Gas Furnace

  • Burner Assembly for Janitrol GUN125-5B - Part B18225-12

    Gas train diagram

    Burner Assembly

    Part #B18225-12

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

  • Ignition Mod for Janitrol GUN125-5B - Part B13707-26

    Gas train diagram

    Ignition Mod

    Part #B13707-26

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

  • Blwr Asm,ser for Janitrol GUN125-5B - Part 18682-04S

    Blower assembly diagram

    Blwr Asm,ser

    Part #18682-04S

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

  • Burner Assembly for Janitrol GUN125-5B - Part B18225-09

    Gas train diagram

    Burner Assembly

    Part #B18225-09

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

  • Flue Restrictor (gun075-3b, Gus075-3) for Janitrol GUN125-5B - Part 18248-01S

    Heat exchanger assembly diagram

    Flue Restrictor (gun075-3b, Gus075-3)

    Part #18248-01S

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

  • Comb Box Frt for Janitrol GUN125-5B - Part 18820-15

    Heat exchanger assembly diagram

    Comb Box Frt

    Part #18820-15

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

  • Manifold, 5 for Janitrol GUN125-5B - Part B18264-15

    Gas train diagram

    Manifold, 5

    Part #B18264-15

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

  • Cover, Cumbu for Janitrol GUN125-5B - Part 18820-16

    Heat exchanger assembly diagram

    Cover, Cumbu

    Part #18820-16

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

  • Secondary He for Janitrol GUN125-5B - Part B18646-00

    Heat exchanger assembly diagram

    Secondary He

    Part #B18646-00

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

  • Air Pressure for Janitrol GUN125-5B - Part B13701-30

    Misc. electrical/hardware diagram

    Air Pressure

    Part #B13701-30

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

Symptoms for upright vacuums

Main causes: dirty sensor eyes, bad dirt sensor control board…

Main causes: wiring failure, faulty dirt sensor control board…

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.…

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.…

Parts & More

Bottom-Mount Refrigerator
Central Air Conditioner
Charcoal Grill
Dryer
Electric Cooktop
Electric Range
Gas Cooktop
Gas Range
Lawn & Garden Engine
Microwave/Hood Combo
Small Appliance
Television
Top-Mount Refrigerator
Washer