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Goodman
Furnace

Model # GMT045-3B Official Goodman gas furnace

Here are the diagrams and repair parts for Official Goodman GMT045-3B gas furnace, as well as links to manuals and error code tables, if available.

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Installation guide

Model diagram and schematic

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Showing 10 of 154 parts  |
Furnace Hot-surface Ignition Control Board (replaces 18099-13s, B18099-13s) B1809913S
#291

Misc. components/drain kit assembly diagram

Furnace hot-surface ignition control board (replaces 18099-13s, b18099-13s)

Part #B1809913S

This item is not returnable
$185.31 | 
6% OFF Phone Price : $197.31
In Stock
Motor B4059001
#111

Heat exchanger assembly diagram

Motor

Part #B4059001

Replaced by #0131M00002PSP

?
Manufacturer substitution
This part replaces B4059001. Substitute parts can look different from the original.
$158.40 | 
7% OFF Phone Price : $170.40
In Stock
Wheel B1368047A
#241

Blower assembly diagram

Wheel

Part #B1368047A

Replaced by #D6723306S

?
Manufacturer substitution
This part replaces B1368047A. Substitute parts can look different from the original.
$119.58 | 
9% OFF Phone Price : $131.58
In Stock
Furnace Temperature Limit Switch B1370198
#91

Heat exchanger assembly diagram

Furnace temperature limit switch

Part #B1370198

$27.29
In Stock
Furnace Burner B4022700
#181

Burner box assembly diagram

Furnace burner

Part #B4022700

$21.16 | 
22% OFF Phone Price : $27.16
In Stock
Furnace Secondary Heat Exchanger 4021309S
#61C

Heat exchanger assembly diagram

Furnace secondary heat exchanger

Part #4021309S

$192.79 | 
6% OFF Phone Price : $204.79
In Stock
Orifice B4089343
#201

Burner box assembly diagram

Orifice

Part #B4089343

Replaced by #0163F00018

?
Manufacturer substitution
This part replaces B4089343. Substitute parts can look different from the original.
This item is not returnable
$4.29
In Stock
Shell 2539305
#221A

Blower assembly diagram

Shell

Part #2539305

Replaced by #2539305S

?
Manufacturer substitution
This part replaces 2539305. Substitute parts can look different from the original.
$86.06 | 
7% OFF Phone Price : $92.06
In Stock
Capacitor B945672
#281

Misc. components/drain kit assembly diagram

Capacitor

Part #B945672

Replaced by #CAP125000370RPP

?
Manufacturer substitution
This part replaces B945672. Substitute parts can look different from the original.
This item is not returnable
$31.20 | 
16% OFF Phone Price : $37.20
In Stock
Goodman Tube Ht. Exch. Asm. 2cl 14 4821400S
#61G

Heat exchanger assembly diagram

Goodman tube ht. exch. asm. 2cl 14

Part #4821400S

$613.08
In Stock

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