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Goodman GUN075-3B gas furnace

Goodman GUN075-3B gas furnace Parts

Here are the diagrams and repair parts for Goodman GUN075-3B gas furnace, as well as links to manuals and error code tables, if available.

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Browse Parts for GUN075-3B Gas Furnace

  • Box,combusti for Goodman GUN075-3B - Part 18820-02

    Heat exchanger assembly diagram

    Box,combusti

    Part #18820-02

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

  • Ignition Mod for Goodman GUN075-3B - Part B13707-24

    Gas train diagram

    Ignition Mod

    Part #B13707-24

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

  • Secondary Ai for Goodman GUN075-3B - Part 18224-10

    Heat exchanger assembly diagram

    Secondary Ai

    Part #18224-10

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

  • Comb Box Frt for Goodman GUN075-3B - 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, 3 for Goodman GUN075-3B - Part B18264-17

    Gas train diagram

    Manifold, 3

    Part #B18264-17

    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.…

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Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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