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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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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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ALL PARTS
Showing 10 of 355 parts  |
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
Relay 42-19736-14
Relay

Part #42-19736-14

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

Weatherking Blow Cutoff AE-64401-18
#23F

Replacement parts diagram

Weatherking blow cutoff

Part #AE-64401-18

$23.58
In Stock
Filter 54-19655-13
#12C

Replacement parts diagram

Filter

Part #54-19655-13

$26.80
In Stock
Relay 42-21593-02

#NI

All parts diagram

Relay

Part #42-21593-02

$44.87
In Stock
Filter 54-19655-12
#12B

Replacement parts diagram

Filter

Part #54-19655-12

$22.71
In Stock
Limit Switch 47-20045-06
#34H

Replacement parts diagram

Limit switch

Part #47-20045-06

$61.22
In Stock
Blower Wheel 70-17426-02
#23C

Replacement parts diagram

Blower wheel

Part #70-17426-02

$239.42
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

$721.90
In Stock

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