Goodman
Furnace

Model # GMPN120-5 Official Goodman gas furnace

Here are the diagrams and repair parts for Official Goodman GMPN120-5 gas furnace, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 129 parts  |

Furnace Burner Igniter (replaces B14010-15s) B1401018S
#61

Burner box/control panel/blower diagram

Furnace burner igniter (replaces b14010-15s)

Part #B1401018S

$43.19
10% OFF Phone Price : $48.19
In Stock
Furnace Blower Fan Motor B13400-21S
#33A

Burner box/control panel/blower diagram

Furnace blower fan motor

Part #B13400-21S

In Stock
Central Air Conditioner Air Handler Blower Wheel B1368016S
#43C

Burner box/control panel/blower diagram

Central air conditioner air handler blower wheel

Part #B1368016S

In Stock
Wheel B1368047A
#43

Burner box/control panel/blower diagram

Wheel

Part #B1368047A

Replaced by #D6723306S

?
Manufacturer substitution
This part replaces B1368047A. Substitute parts can look different from the original.
$127.22
7% OFF Phone Price : $137.22
In Stock
Furnace Flue Collector Box, 14-in 2820004S
#81

Heat exchanger diagram

Furnace flue collector box, 14-in

Part #2820004S

In Stock
Furnace Heat Exchanger 2864604S
#61

Heat exchanger diagram

Furnace heat exchanger

Part #2864604S

$389.60
$10.00 OFF Phone Price : $399.60
In Stock
Furnace Secondary Heat Exchanger (replaces 2864605, 28646-05) 2864605S
#61A

Heat exchanger diagram

Furnace secondary heat exchanger (replaces 2864605, 28646-05)

Part #2864605S

$503.75
$10.00 OFF Phone Price : $513.75
In Stock
Goodman Blower Access Door 0221F00033PBB
#71B

Cabinet diagram

Goodman blower access door

Part #0221F00033PBB

In Stock
Limit Switch 1370908S
#21A

Heat exchanger diagram

Limit switch

Part #1370908S

In Stock
Goodman Primary Heat Exchanger 2821300S
#11A

Heat exchanger diagram

Goodman primary heat exchanger

Part #2821300S

In Stock

Repair guides for front-engine lawn tractors

How to replace a ground drive belt on a riding lawn mower

How to replace a ground drive belt on a riding lawn mower

Replace the ground drive belt if it's broken or too worn to spin the transaxle pulley.…

Repair difficulty
Time required
 45 minutes or less
How to replace a blade clutch cable on a riding lawn mower

How to replace a blade clutch cable on a riding lawn mower

If the blades don't spin on your riding mower when you shift the lever, the blade clutch cable could be broken. Here’s h…

Repair difficulty
Time required
 30 minutes or less
How to replace a riding lawn mower blade drive belt

How to replace a riding lawn mower blade drive belt

Replace the blade drive belt if it's broken or won't spin the cutting blades because of wear.…

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.…

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.…