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 87 parts  |

Transformer B11416-00
#1

Electrical & hardware diagram

Transformer

Part #B11416-00

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

Furnace Air Pressure Switch B13701-33
#3A

Electrical & hardware diagram

Furnace air pressure switch

Part #B13701-33

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

Limit, 150f, B13700-06
#1

Heat exchanger assembly diagram

Limit, 150f,

Part #B13700-06

Replaced by #1370906S

?
Manufacturer substitution
This part replaces B13700-06. Substitute parts can look different from the original.
In Stock
Kit, Serv Ga 12826-07S
#1B

Gas furnace diagram

Kit, serv ga

Part #12826-07S

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

Gas Valve 12826-06S
#1A

Gas furnace diagram

Gas valve

Part #12826-06S

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

Capacitor 10 B9456-52
#1A

Blower assemblies diagram

Capacitor 10

Part #B9456-52

Replaced by #12908

?
Manufacturer substitution
This part replaces B9456-52. Substitute parts can look different from the original.
This item is not returnable
$5.26
16% OFF Phone Price : $6.26
In Stock
Power Vent M B18590-00
#5

Electrical & hardware diagram

Power vent m

Part #B18590-00

Replaced by #B1859000

?
Manufacturer substitution
This part replaces B18590-00. Substitute parts can look different from the original.
In Stock
Ignition Mod B13707-24
#3

Gas furnace diagram

Ignition mod

Part #B13707-24

Replaced by #BG1600M51EF-1AA

?
Manufacturer substitution
This part replaces B13707-24. Substitute parts can look different from the original.
$191.94
6% OFF Phone Price : $203.94
In Stock
Motor B13400-09
#2B

Blower assemblies diagram

Motor

Part #B13400-09

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

Limit, 220f, B13700-11
#1B

Heat exchanger assembly diagram

Limit, 220f,

Part #B13700-11

Replaced by #1370911S

?
Manufacturer substitution
This part replaces B13700-11. Substitute parts can look different from the original.
Back Order

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to replace a lawn mower spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower drive cable

How to replace a lawn mower drive cable

The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower starter rope

How to replace a lawn mower starter rope

These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…

Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your furnaces

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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.…