Rheem
Air Handler

Model # HQA SIZE 12 Official Rheem air handler

Here are the diagrams and repair parts for Official Rheem HQA-SIZE-12 air handler, 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 355 parts  |

Contactor 42-20616-01

#NI

All parts diagram

Contactor

Part #42-20616-01

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

Relay 42-19423-05
Relay

Part #42-19423-05

Replaced by #WR90-370

?
Manufacturer substitution
This part replaces 42-19423-05. Substitute parts can look different from the original.
$21.63
22% OFF Phone Price : $27.63
In Stock
Relay-plug 42-19423-01
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
22% OFF Phone Price : $27.63
In Stock
Filter 54-19655-12
#12B

Replacement parts diagram

Filter

Part #54-19655-12

In Stock
Relay 42-21593-01

#NI

All parts diagram

Relay

Part #42-21593-01

In Stock
Blower Wheel 70-17426-02
#23C

Replacement parts diagram

Blower wheel

Part #70-17426-02

In Stock
Central Air Conditioner Air Handler Blower Motor 51-21543-01
#20B

Replacement parts diagram

Central air conditioner air handler blower motor

Part #51-21543-01

In Stock
Limit Switch 47-20045-06
#34H

Replacement parts diagram

Limit switch

Part #47-20045-06

In Stock
Relay 42-21593-02

#NI

All parts diagram

Relay

Part #42-21593-02

In Stock
Weatherking Blow Cutoff AE-64401-18
#23F

Replacement parts diagram

Weatherking blow cutoff

Part #AE-64401-18

In Stock

Repair guides for side-by-side refrigerators

How to replace an ice dispenser motor in a side-by-side refrigerator

How to replace an ice dispenser motor in a side-by-side refrigerator

If your side-by-side refrigerator isn’t churning out ice, replacing the motor could fix the problem. These steps explain…

Repair difficulty
Time required
 45 minutes or less
How to replace a defrost heater in a side-by-side refrigerator

How to replace a defrost heater in a side-by-side refrigerator

If frost is building up in the freezer of your side-by-side refrigerator, the defrost heater could be faulty. Follow the…

Repair difficulty
Time required
 45 minutes or less
How to replace an evaporator fan motor in a side-by-side refrigerator

How to replace an evaporator fan motor in a side-by-side refrigerator

If your refrigerator isn't as cold as it should be, it could be that the evaporator fan motor isn't circulating air. Thi…

Repair difficulty
Time required
 60 minutes or less

Effective articles & videos to help repair your air handlers

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.…