Furnace

Model # GM144K20C Official Thermal Zone gas furnace

Here are the diagrams and repair parts for Official Thermal Zone GM144K20C gas furnace, as well as links to manuals and error code tables, if available.

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Browse Parts for
GM144K20C Gas Furnace
Capacitor 621435
#22

80+ upflow furnace diagram

Capacitor

Part #621435

Replaced by #12908

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Manufacturer substitution
This part replaces 621435. Substitute parts can look different from the original.
$107.77
10% OFF Phone Price : $119.77
In Stock
Kenmore Furnace Electronic Control Board 903106
#25

80+ upflow furnace diagram

Kenmore furnace electronic control board

Part #903106

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

Furnace Blower Fan Motor Assembly 902816
#23

80+ upflow furnace diagram

Furnace blower fan motor assembly

Part #902816

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

Furnace Control Module Assembly 903108
#25A

80+ upflow furnace diagram

Furnace control module assembly

Part #903108

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

Furnace Blower Wheel 667277
#20

80+ upflow furnace diagram

Furnace blower wheel

Part #667277

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

Sensor Rod 632316
#6

80+ upflow furnace diagram

Sensor rod

Part #632316

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

Furnace Burner Flame Roll-out Switch 626343
#7

80+ upflow furnace diagram

Furnace burner flame roll-out switch

Part #626343

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

Limit Sw 626418
#18

80+ upflow furnace diagram

Limit sw

Part #626418

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

Switch 632212
#17

80+ upflow furnace diagram

Switch

Part #632212

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

Gas Valve 624586
#2

80+ upflow furnace diagram

Gas valve

Part #624586

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

Symptoms for gas ranges

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

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

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.…

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…

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.…

Repair difficulty
Time required
 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

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