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Thermal Zone
Furnace

Model # GU120M20C Official Thermal Zone gas furnace

Here are the diagrams and repair parts for Official Thermal Zone GU120M20C 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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Showing 10 of 29 parts  |
Capacitor 621435
#7

90+ upflow condensing furnace diagram

Capacitor

Part #621435

Replaced by #12908

?
Manufacturer substitution
This part replaces 621435. Substitute parts can look different from the original.
This item is not returnable
$5.26 | 
16% OFF Phone Price : $6.26
In Stock
Furnace Blower Fan Motor Assembly 902816
#4

90+ upflow condensing furnace diagram

Furnace blower fan motor assembly

Part #902816

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

Furnace Blower Wheel 667277
#6

90+ upflow condensing furnace diagram

Furnace blower wheel

Part #667277

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

Orifice 661045
#16

90+ upflow condensing furnace diagram

Orifice

Part #661045

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

Furnace Vent Limit Switch, 160-degree 626461
#27

90+ upflow condensing furnace diagram

Furnace vent limit switch, 160-degree

Part #626461

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

Central Air Conditioner Air Handler Drain Pan Connector 663714
#23

90+ upflow condensing furnace diagram

Central air conditioner air handler drain pan connector

Part #663714

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

Furnace Electronic Control Board 903106
#11

90+ upflow condensing furnace diagram

Furnace electronic control board

Part #903106

$297.66
In Stock
Limit Switch 626419
#19

90+ upflow condensing furnace diagram

Limit switch

Part #626419

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

Transformer 621486
#3

90+ upflow condensing furnace diagram

Transformer

Part #621486

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

Gas Valve 624586
#13

90+ upflow condensing furnace diagram

Gas valve

Part #624586

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

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