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Goodman GMTH045-3B gas furnace Parts
Here are the diagrams and repair parts for Goodman GMTH045-3B gas furnace, as well as links to manuals and error code tables, if available.
Installation guide
By Schematic
SELECT DIAGRAM
Browse Parts for GMTH045-3B Gas Furnace
Misc. components/drain kit assembly diagram
Furnace Vent Air Pressure Switch
Part #B1370179
The manufacturer no longer makes this part, and there's no substitute part
Wrapper assembly diagram
Door-accs
Part #4812001P
The manufacturer no longer makes this part, and there's no substitute part
Misc. components/drain kit assembly diagram
Wire Harness Kit, Gdt (gdt045-3b, Gdt070-3b, Gdt090-4b, Gdt115-5b)
Part #4078401S
The manufacturer no longer makes this part, and there's no substitute part
Burner box assembly diagram
Manifold, Gas 4 Cl (gmt090-3b, Gmt090-4b, Gmt090-5b, Gdt090-4b, Gmth090-5b)
Part #B4026007
The manufacturer no longer makes this part, and there's no substitute part
Misc. components/drain kit assembly diagram
Transformer
Part #B1141605
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Flue Collector Box Kit, 21" (gmt115-5b, Gdt115-5b)
Part #4010017S
The manufacturer no longer makes this part, and there's no substitute part
Burner box assembly diagram
Rack
Part #2513502
The manufacturer no longer makes this part, and there's no substitute part
Wrapper assembly diagram
Panel
Part #4815800
The manufacturer no longer makes this part, and there's no substitute part
Misc. components/drain kit assembly diagram
Furnace Condensate Drain Kit
Part #B4810709
The manufacturer no longer makes this part, and there's no substitute part
Blower assembly diagram
Furnace Auxiliary Limit Control
Part #B13701-55
The manufacturer no longer makes this part, and there's no substitute part
Repair guides for bottom-mount refrigerators
How to replace an electronic control board on the back of a refrigerator
If your refrigerator isn't running, an electronic control board failure could be the problem. A service technician can d…
Repair time and Difficulty
15 minutes or less
How to replace a door gasket in a French-door refrigerator
The door gasket, often called a door seal, seals the gap around the door to keep the cold air in and the warm air out. R…
Repair time and Difficulty
15 minutes or less
How to replace an in-door ice maker on a French door refrigerator
Follow these step-by-step instructions how to replace the in-door ice maker in Kenmore TRIO and LG French door refrigera…
Repair time and Difficulty
15 minutes or less
Effective articles & videos to help repair your furnaces
Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…
Find out how new DOE standards going into effect in 2023 can affect you and what you need to do.…
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