Furnace

Model # GMN120-5 Official Janitrol gas furnace

Here are the diagrams and repair parts for Official Janitrol GMN120-5 gas furnace, as well as links to manuals and error code tables, if available.

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Browse Parts for
GMN120-5 Gas Furnace
Transformer B11416-00
#34

Heat exchangers/misc.electrical diagram

Transformer

Part #B11416-00

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

Hsi Module B18099-08
#40

Heat exchangers/misc.electrical diagram

Hsi module

Part #B18099-08

Replaced by #B1809913S

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Manufacturer substitution
This part replaces B18099-08. Substitute parts can look different from the original.
This item is not returnable
$207.23
5% OFF Phone Price : $219.23
In Stock
Capacitor 15 B9456-53
#38

Heat exchangers/misc.electrical diagram

Capacitor 15

Part #B9456-53

Replaced by #12910

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Manufacturer substitution
This part replaces B9456-53. Substitute parts can look different from the original.
$8.37
11% OFF Phone Price : $9.37
In Stock
Hot Surface B14010-09S
#4

Heat exchangers/misc.electrical diagram

Hot surface

Part #B14010-09S

Replaced by #41-412

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Manufacturer substitution
This part replaces B14010-09S. Substitute parts can look different from the original.
$49.15
11% OFF Phone Price : $55.15
In Stock
Gas Valve B12826-15
#8

Heat exchangers/misc.electrical diagram

Gas valve

Part #B12826-15

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

Heat Exchange B28646-03
#22

Heat exchangers/misc.electrical diagram

Heat exchange

Part #B28646-03

Replaced by #2864607S

?
Manufacturer substitution
This part replaces B28646-03. Substitute parts can look different from the original.
In Stock
Limit B13700-10
#11

Heat exchangers/misc.electrical diagram

Limit

Part #B13700-10

Replaced by #1370910S

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Manufacturer substitution
This part replaces B13700-10. Substitute parts can look different from the original.
$55.18
10% OFF Phone Price : $61.18
In Stock
Burner Side 25140-00
#3

Heat exchangers/misc.electrical diagram

Burner side

Part #25140-00

Replaced by #0121F00146

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Manufacturer substitution
This part replaces 25140-00. Substitute parts can look different from the original.
This item is not returnable
In Stock
Front Panel 28301-03
#17

Heat exchangers/misc.electrical diagram

Front panel

Part #28301-03

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

Furnace Access Door Latch B13921-32
#11

Heat exchanger diagram

Furnace access door latch

Part #B13921-32

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

Repair guides for bottom-mount refrigerators

How to replace a flipper mullion on a French-door refrigerator

How to replace a flipper mullion on a French-door refrigerator

If the flipper mullion breaks or its heater quits working, replace it in 15 minutes using these 4 easy steps.…

Repair difficulty
Time required
 15 minutes or less
How to replace a door gasket in a French-door refrigerator

How to replace a door gasket in a French-door refrigerator

The door gasket, often called a door seal, seals the gap around the door to keep the cold air in and the warm air out. R…

Repair difficulty
Time required
 15 minutes or less
How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Repair difficulty
Time required
 15 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.…

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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.…