Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Rheem
Furnace

Model # HWA8&12 Official Rheem hot water space heat furnace

Here are the diagrams and repair parts for Official Rheem HWA812 hot water space heat furnace, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

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

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 47 parts  |
Capacitor 43-20847-04
#21

Unit parts diagram

Capacitor

Part #43-20847-04

Replaced by #12005

?
Manufacturer substitution
This part replaces 43-20847-04. Substitute parts can look different from the original.
$16.12 | 
11% OFF Phone Price : $18.12
In Stock
Motor 51-20169-02
#20

Unit parts diagram

Motor

Part #51-20169-02

$353.51
In Stock
Furnace Coil Assembly AS-58227-02
#8A

Unit parts diagram

Furnace coil assembly

Part #AS-58227-02

$1225.88
In Stock
Filter 54-19655-12

#NI

All parts diagram

Filter

Part #54-19655-12

$22.71
In Stock
Coil Assembly AS-58228-02
#8B

Unit parts diagram

Coil assembly

Part #AS-58228-02

$1545.45
In Stock
Blower Wheel 70-18631-01
#17

Unit parts diagram

Blower wheel

Part #70-18631-01

$191.76
In Stock
Blower Wheel 70-21476-01
#17A

Unit parts diagram

Blower wheel

Part #70-21476-01

Replaced by #70-23111-05

?
Manufacturer substitution
This part replaces 70-21476-01. Substitute parts can look different from the original.
$143.04
In Stock
Mount Bracket AS-53148-01
#19B

Unit parts diagram

Mount bracket

Part #AS-53148-01

Replaced by #AS-53148-81

?
Manufacturer substitution
This part replaces AS-53148-01. Substitute parts can look different from the original.
$108.10
In Stock
Capacitor 43-20847-09
#21A

Unit parts diagram

Capacitor

Part #43-20847-09

Replaced by #43-25134-04

?
Manufacturer substitution
This part replaces 43-20847-09. Substitute parts can look different from the original.
$9.80
In Stock
Relay-plug 42-19423-01
#14

Unit parts diagram

Relay-plug

Part #42-19423-01

Replaced by #WR90-370

?
Manufacturer substitution
This part replaces 42-19423-01. Substitute parts can look different from the original.
$21.63 | 
19% OFF Phone Price : $26.63
In Stock

Repair guides for bottom-mount refrigerators

How to replace a flipper mullion on a French-door refrigerator

How to replace a flipper mullion on a French-door refrigerator

If the flipper mullion breaks or its heater quits working, replace it in 15 minutes using these 4 easy steps.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a door gasket in a French-door refrigerator

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…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Read more
Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your furnaces

View all
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.…

Read more
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.…

Read more
Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Read more

Parts & More