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Thermal Zone
Air Handler

Model # AH18A-1 Official Thermal Zone air handler

Here are the diagrams and repair parts for Official Thermal Zone AH18A-1 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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Showing 10 of 15 parts  |
Capacitor 621435
#8

Air handlers diagram

Capacitor

Part #621435

Replaced by #12908

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Manufacturer substitution
This part replaces 621435. Substitute parts can look different from the original.
This item is not returnable
$5.26 | 
16% OFF Phone Price : $6.26
In Stock
Motor 913357
#9

Air handlers diagram

Motor

Part #913357

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

Close Off Plate (2) 226420
#5

Air handlers diagram

Close off plate (2)

Part #226420

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

Electrical Panel Assembly 470960
#2

Air handlers diagram

Electrical panel assembly

Part #470960

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

Upper Door With Insulation 372401Z
#11

Air handlers diagram

Upper door with insulation

Part #372401Z

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

Lower Door, With Insulation 488080Z
#12

Air handlers diagram

Lower door, with insulation

Part #488080Z

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

Cap, Top With Insulation 372105Z
#1

Air handlers diagram

Cap, top with insulation

Part #372105Z

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

Transformer 620858
#4

Air handlers diagram

Transformer

Part #620858

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

Indoor Coil Assembly 914418
#13

Air handlers diagram

Indoor coil assembly

Part #914418

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

Blower Relay 620537
#3

Air handlers diagram

Blower relay

Part #620537

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

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Time required
 15 minutes or less

Effective articles & videos to help repair your air handlers

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