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Goodman
Furnace

Model # GMTH045-3B Official Goodman gas furnace

Here are the diagrams and repair parts for Official Goodman GMTH045-3B 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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ALL PARTS
Showing 10 of 154 parts  |
Igniter B1401015S
#131

Burner box assembly diagram

Igniter

Part #B1401015S

Replaced by #B1401018S

?
Manufacturer substitution
This part replaces B1401015S. Substitute parts can look different from the original.
$43.19 | 
10% OFF Phone Price : $48.19
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 | 
6% OFF Phone Price : $168.40
In Stock
Furnace Burner Roll-out Limit Switch B1370145
#151

Burner box assembly diagram

Furnace burner roll-out limit switch

Part #B1370145

$11.69
In Stock
Manifold B4026003
#191F

Burner box assembly diagram

Manifold

Part #B4026003

$50.96
In Stock
Furnace Primary Thermal Limit Switch B1370188
#91B

Heat exchanger assembly diagram

Furnace primary thermal limit switch

Part #B1370188

$24.18
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.
$127.22 | 
7% OFF Phone Price : $137.22
In Stock
Wheel Blow B1368016
#241B

Blower assembly diagram

Wheel blow

Part #B1368016

Replaced by #B1368016S

?
Manufacturer substitution
This part replaces B1368016. Substitute parts can look different from the original.
$107.24
In Stock
Vent Motor B4833000
#111A

Heat exchanger assembly diagram

Vent motor

Part #B4833000

Replaced by #B4833000S

?
Manufacturer substitution
This part replaces B4833000. Substitute parts can look different from the original.
$353.00 | 
$10.00 OFF Phone Price : $363.00
In Stock
Furnace Heat Exchanger 4821402S
#61I

Heat exchanger assembly diagram

Furnace heat exchanger

Part #4821402S

$469.29 | 
$10.00 OFF Phone Price : $479.29
In Stock
Burner Box Top, 6 Cl (gmt140-5b, Gmnt120-5b) 4013009
#121D

Burner box assembly diagram

Burner box top, 6 cl (gmt140-5b, gmnt120-5b)

Part #4013009

$23.53
In Stock

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