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Rheem
Air Handler

Model # HQA SIZE 20 Official Rheem air handler

Here are the diagrams and repair parts for Official Rheem HQA-SIZE-20 air handler, 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 355 parts  |
Capacitor 43-20847-10
#21E

Replacement parts diagram

Capacitor

Part #43-20847-10

Replaced by #12907

?
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
Capacitor 43-20847-11
#21D

Replacement parts diagram

Capacitor

Part #43-20847-11

Replaced by #12907

?
Manufacturer substitution
This part replaces 43-20847-11. Substitute parts can look different from the original.
This item is not returnable
$4.87 | 
17% OFF Phone Price : $5.87
In Stock
Relay 42-19736-14
Relay

Part #42-19736-14

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

Capacitor 43-20847-03
Capacitor

Part #43-20847-03

Replaced by #12005

?
Manufacturer substitution
This part replaces 43-20847-03. Substitute parts can look different from the original.
$16.49 | 
11% OFF Phone Price : $18.49
In Stock
Relay 42-21593-01

#NI

All parts diagram

Relay

Part #42-21593-01

$28.96
In Stock
Filter 54-19655-12
#12B

Replacement parts diagram

Filter

Part #54-19655-12

$22.71
In Stock
Relay 42-21593-02

#NI

All parts diagram

Relay

Part #42-21593-02

$44.87
In Stock
Blower Wheel 70-17426-02
#23C

Replacement parts diagram

Blower wheel

Part #70-17426-02

$239.42
In Stock
Limit Switch 47-20045-06
#34H

Replacement parts diagram

Limit switch

Part #47-20045-06

$61.22
In Stock
Weatherking Blow Cutoff AE-64401-18
#23F

Replacement parts diagram

Weatherking blow cutoff

Part #AE-64401-18

$23.58
In Stock

Symptoms for electric water heaters

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Repair guides for electric water heaters

How to replace a water heater element

How to replace a water heater element

If your water heater runs out of hot water quickly and one of the two heating elements has failed, replace the element f…

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Repair difficulty
Time required
 30 minutes or less
How to replace an electric water heater thermostat

How to replace an electric water heater thermostat

If the water temperature fluctuates or you don't get enough hot water, follow these instructions to replace your water h…

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Repair difficulty
Time required
 30 minutes or less
How to replace a water heater temperature and pressure (T&P) relief valve

How to replace a water heater temperature and pressure (T&P) relief valve

Replace a broken temperature/pressure (T&P) relief valve on an electric water heater using these instructions.…

Read more
Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your air handlers

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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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