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Goodman GDPX120-5B gas furnace

Goodman GDPX120-5B gas furnace Parts

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

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Browse Parts for GDPX120-5B Gas Furnace

  • Thermocouple for Goodman GDPX120-5B - Part B11726-00

    Gas furnace diagram

    Thermocouple

    Part #B11726-00

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

  • Burner Assembly for Goodman GDPX120-5B - Part B18225-03

    Gas furnace diagram

    Burner Assembly

    Part #B18225-03

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

  • Top Angle for Goodman GDPX120-5B - Part 18814--01

    Gas furnace diagram

    Top Angle

    Part #18814--01

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

  • Burner Assembly for Goodman GDPX120-5B - Part B18225-04

    Gas furnace diagram

    Burner Assembly

    Part #B18225-04

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

  • Top Duct Ang for Goodman GDPX120-5B - Part 18221-08

    Gas furnace diagram

    Top Duct Ang

    Part #18221-08

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

  • Heat Exch. S for Goodman GDPX120-5B - Part 18212-32S

    Heat exchanger assembly diagram

    Heat Exch. S

    Part #18212-32S

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

  • Manifold Bra for Goodman GDPX120-5B - Part 18159-01

    Heat exchanger assembly diagram

    Manifold Bra

    Part #18159-01

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

  • Power Vent H for Goodman GDPX120-5B - Part 18812-08

    Heat exchanger assembly diagram

    Power Vent H

    Part #18812-08

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

  • Burner Assembly for Goodman GDPX120-5B - Part B18225-08

    Gas furnace diagram

    Burner Assembly

    Part #B18225-08

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

  • Secondary Ai for Goodman GDPX120-5B - Part 18224-19

    Heat exchanger assembly diagram

    Secondary Ai

    Part #18224-19

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

Symptoms for gas cooktops

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

Main causes: stuck burner igniter switch, wet igniter switch contacts, faulty spark module…

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

Repair guides for gas cooktops

How to replace a spark module on a gas cooktop

How to replace a spark module on a gas cooktop

No flame on your gas cooktop? Installing a new spark module could be the fix you need.…

Repair time and Difficulty

 30 minutes or less
How to replace a spark igniter switch on a gas cooktop

How to replace a spark igniter switch on a gas cooktop

Follow these step-by-step instructions to fix the surface burner ignition system on your gas cooktop by replacing the sp…

Repair time and Difficulty

 45 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.…

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