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Goodman
Furnace

Model # GDPX120-5B Official Goodman gas furnace

Here are the diagrams and repair parts for Official Goodman GDPX120-5B gas furnace, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 13 parts  |
Furnace Blower Door 18223-31
#6

Gas furnace diagram

Furnace blower door

Part #18223-31

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

Top Angle, 2 18814-02
#5B

Gas furnace diagram

Top angle, 2

Part #18814-02

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

Blower Asm. 18682-47S
#7C

Blower assemblies diagram

Blower asm.

Part #18682-47S

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

Motor Mounting Bracket B13768-51
#4

Blower assemblies diagram

Motor mounting bracket

Part #B13768-51

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

Manifold, 5 B18264-03
#6C

Gas furnace diagram

Manifold, 5

Part #B18264-03

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

Power Vent H 18812-09
#8A

Heat exchanger assembly diagram

Power vent h

Part #18812-09

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

Wrapper Togg 18161-17P
#1A

Gas furnace diagram

Wrapper togg

Part #18161-17P

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

Top Angle, 1 18814-00
#5

Gas furnace diagram

Top angle, 1

Part #18814-00

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

Furnace Burner Roll-out Limit Switch B13701-08
#9

Heat exchanger assembly diagram

Furnace burner roll-out limit switch

Part #B13701-08

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

Energy Cut-o B14972-04
#2

Heat exchanger assembly diagram

Energy cut-o

Part #B14972-04

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

Symptoms for gas ranges

Why won't my range's gas burner spark or ignite?

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…

Read more

Why isn't my range's gas burner heating properly?

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…

Read more

Repair guides for gas ranges

How to replace oven door hinges on a gas range

How to replace oven door hinges on a gas range

See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a range spark igniter switch

How to replace a range spark igniter switch

Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a range spark igniter electrode

How to replace a range spark igniter electrode

Learn how to replace the spark igniter electrode for the surface burners on a gas range or dual-fuel range.…

Read more
Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your furnaces

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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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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.…

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Top questions about Sears and Sears PartsDirect

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