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Rheem
Furnace

Model # GWC Official Rheem gas-fired horizontal heating unit

Here are the diagrams and repair parts for Official Rheem GWC gas-fired horizontal heating unit, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 245 parts  |
Thermocouple 62-18443-05
#31A

Replacement parts diagram

Thermocouple

Part #62-18443-05

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

Relay-plug 42-19423-01
#28

Replacement parts diagram

Relay-plug

Part #42-19423-01

Replaced by #WR90-370

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Manufacturer substitution
This part replaces 42-19423-01. Substitute parts can look different from the original.
$21.63 | 
22% OFF Phone Price : $27.63
In Stock
Weatherking Blow Cutoff AE-64401-07

#NI

All parts diagram

Weatherking blow cutoff

Part #AE-64401-07

$21.71
In Stock
Gas Valve 60-21103-01
#33

Replacement parts diagram

Gas valve

Part #60-21103-01

$764.05
In Stock
Orifice 62-20003-47
#29B

Replacement parts diagram

Orifice

Part #62-20003-47

$27.69
In Stock
Orifice 62-20003-46
#29C

Replacement parts diagram

Orifice

Part #62-20003-46

$27.69
In Stock
Pilot 62-19125-01
#30A

Replacement parts diagram

Pilot

Part #62-19125-01

$181.98
In Stock
Blow Cutoff AE-64401-06

#NI

All parts diagram

Blow cutoff

Part #AE-64401-06

$24.11
In Stock
Orifice 62-20003-13
#29A

Replacement parts diagram

Orifice

Part #62-20003-13

$25.56
In Stock
Filter 54-17531-04

#NI

All parts diagram

Filter

Part #54-17531-04

$23.98
In Stock

Symptoms for gas ranges

Why won't my range's gas burner spark or ignite?

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…

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Why isn't my range's gas burner heating properly?

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…

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Repair guides for gas ranges

How to replace oven door hinges on a gas range

How to replace oven door hinges on a gas range

See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a range spark igniter switch

How to replace a range spark igniter switch

Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a range spark igniter electrode

How to replace a range spark igniter electrode

Learn how to replace the spark igniter electrode for the surface burners on a gas range or dual-fuel range.…

Read more
Repair difficulty
Time required
 45 minutes or less

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How to get your furnace ready for winter

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Introducing new technical repair content that we’re developing for the Sears Technical Institute

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