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Rheem
Furnace

Model # GUC Official Rheem gas-fired horizontal heating unit

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

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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Showing 10 of 245 parts  |
Motor 51-20621-01

#NI

All parts diagram

Motor

Part #51-20621-01

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

Motor 51-19923-01

#NI

All parts diagram

Motor

Part #51-19923-01

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

Motor 51-18830-01

#NI

All parts diagram

Motor

Part #51-18830-01

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

Motor 51-19670-01

#NI

All parts diagram

Motor

Part #51-19670-01

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

Motor 51-19069-01

#NI

All parts diagram

Motor

Part #51-19069-01

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

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

Capacitor 43-20847-10

#NI

All parts diagram

Capacitor

Part #43-20847-10

Replaced by #12907

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Manufacturer substitution
This part replaces 43-20847-10. Substitute parts can look different from the original.
This item is not returnable
$4.87 | 
17% OFF Phone Price : $5.87
In Stock
Control 47-21087-05
#18E

Replacement parts diagram

Control

Part #47-21087-05

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

Ign Control 62-21192-03
#35D

Replacement parts diagram

Ign control

Part #62-21192-03

Replaced by #BG1600M51EF-1AA

?
Manufacturer substitution
This part replaces 62-21192-03. Substitute parts can look different from the original.
$191.94 | 
6% OFF Phone Price : $203.94
In Stock
Switch 47-21087-01
#18A

Replacement parts diagram

Switch

Part #47-21087-01

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

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