Rheem
Furnace

Model # ROAZ Official Rheem oil-fired highboy furnace

Here are the diagrams and repair parts for Official Rheem ROAZ oil-fired highboy 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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ALL PARTS
Showing 10 of 203 parts  |

Blower Wheel 70-18625-01

#NI

All parts diagram

Blower wheel

Part #70-18625-01

In Stock
Filter 54-17531-10
#23A

Non-functional replacement parts diagram

Filter

Part #54-17531-10

In Stock
Blow Cutoff AE-64401-06

#NI

All parts diagram

Blow cutoff

Part #AE-64401-06

In Stock
Blower Wheel 70-18631-01

#NI

All parts diagram

Blower wheel

Part #70-18631-01

In Stock
Weatherking Blow Cutoff AE-64401-07

#NI

All parts diagram

Weatherking blow cutoff

Part #AE-64401-07

In Stock
Weatherking Blow Cutoff AE-64401-18

#NI

All parts diagram

Weatherking blow cutoff

Part #AE-64401-18

In Stock
Nozzle 59-18056-12
#29D

Non-functional replacement parts diagram

Nozzle

Part #59-18056-12

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

Switch 47-20545-02
#25A

Non-functional replacement parts diagram

Switch

Part #47-20545-02

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

L Switch 47-17362-02
#25

Non-functional replacement parts diagram

L switch

Part #47-17362-02

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

Furnace Blower Wheel 70-18623-01

#NI

All parts diagram

Furnace blower wheel

Part #70-18623-01

Replaced by #70-18623-03

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Manufacturer substitution
This part replaces 70-18623-01. Substitute parts can look different from the original.
In Stock

Symptoms for gas grills

Choose a symptom to see related gas grill repairs.

Main causes: nearly empty fuel tank, faulty pressure regulator, burner tube clogs, bad burner tube alignment to gas valv…

Main causes: empty fuel tank, tripped flow-limiting device on the pressure regulator, faulty manifold valves, burner tub…

Main causes: damaged or dirty flame tamers, corroded firebox, accumulated grease and debris in the grease pan…

Main causes: clogged burner tubes, cracked insulators on igniter electrodes, wiring failures, bad ignition module, manif…

Repair guides for gas grills

These step-by-step repair guides will help you safely fix what’s broken on your gas grill.

How to replace a gas grill wheel

How to replace a gas grill wheel

Replace a broken or damaged wheel in less than 15 minutes.…

Repair difficulty
Time required
 15 minutes or less
How to replace a gas grill igniter electrode

How to replace a gas grill igniter electrode

Replace the igniter electrode on your gas grill if it won’t light the burner.…

Repair difficulty
Time required
 15 minutes or less
How to replace a gas grill ignition module

How to replace a gas grill ignition module

Follow these steps to replace the ignition module if it doesn't produce a spark. …

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your furnaces

Use the advice and tips in these articles and videos to get the most out of your gas grill.

How to get your furnace ready for winter

How to get your furnace ready for winter

Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…

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

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

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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Top questions about Sears and Sears PartsDirect

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