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
Thermal Zone GD040M12A gas furnace

Thermal Zone GD040M12A gas furnace Parts

Here are the diagrams and repair parts for Thermal Zone GD040M12A 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 GD040M12A Gas Furnace

  • Kenmore Furnace Electronic Control Board for Thermal Zone GD040M12A - Part 903106

    90+ downflow furnace diagram

    Kenmore Furnace Electronic Control Board

    Part #903106

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

  • Orifice for Thermal Zone GD040M12A - Part 661045

    90+ downflow furnace diagram

    Orifice

    Part #661045

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

  • Blower Wheel for Thermal Zone GD040M12A - Part 667251

    90+ downflow furnace diagram

    Blower Wheel

    Part #667251

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

  • Central Air Conditioner Air Handler Drain Pan Connector for Thermal Zone GD040M12A - Part 663714

    90+ downflow furnace diagram

    Central Air Conditioner Air Handler Drain Pan Connector

    Part #663714

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

  • Furnace Vent Limit Switch, 160-degree for Thermal Zone GD040M12A - Part 626461

    90+ downflow furnace diagram

    Furnace Vent Limit Switch, 160-degree

    Part #626461

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

  • Limit Sw for Thermal Zone GD040M12A - Part 626418

    90+ downflow furnace diagram

    Limit Sw

    Part #626418

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

  • Transformer for Thermal Zone GD040M12A - Part 621486

    90+ downflow furnace diagram

    Transformer

    Part #621486

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

  • Sensor Rod for Thermal Zone GD040M12A - Part 632316

    90+ downflow furnace diagram

    Sensor Rod

    Part #632316

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

  • Gas Valve for Thermal Zone GD040M12A - Part 624586

    90+ downflow furnace diagram

    Gas Valve

    Part #624586

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

  • Burner Box Assembly for Thermal Zone GD040M12A - Part D04100

    90+ downflow furnace diagram

    Burner Box Assembly

    Part #D04100

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

Symptoms for top-mount refrigerators

Main causes: frozen or clogged defrost drain tube, cracked water system tubing…

Repair guides for top-mount refrigerators

How to replace the light switch in a top-freezer refrigerator

How to replace the light switch in a top-freezer refrigerator

The light switch turns the refrigerator light on and off and monitors door position. Replace the light switch if it does…

Repair time and Difficulty

 15 minutes or less
How to replace the water inlet valve in a top-freezer refrigerator

How to replace the water inlet valve in a top-freezer refrigerator

The water inlet valve controls water flow to the ice maker. Replace the water valve if it doesn't open or shut properly.…

Repair time and Difficulty

 15 minutes or less
How to replace the compressor run capacitor in a top-freezer refrigerator

How to replace the compressor run capacitor in a top-freezer refrigerator

The run capacitor sends electric current to the compressor motor to help the motor run efficiently. Replace the run capa…

Repair time and Difficulty

 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.…

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

Parts