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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ALL PARTS
Showing 10 of 15 parts  |

Motor 913357
#9

Air handlers diagram

Motor

Part #913357

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

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
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

Filter Cover 257961Z
#15

Air handlers diagram

Filter cover

Part #257961Z

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

Complete Blower Assembly, 10 X 6, 1/4 Hp 913875
#6

Air handlers diagram

Complete blower assembly, 10 x 6, 1/4 hp

Part #913875

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

Drain Pan Only, Slab Coils 668865
#14

Air handlers diagram

Drain pan only, slab coils

Part #668865

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

Blower Wheel, 10 X 16 667215
#7

Air handlers diagram

Blower wheel, 10 x 16

Part #667215

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

Symptoms for gas leaf blowers

Choose a symptom to see related leaf blower repairs.

Main causes: damaged fan blade, engine needs a tune up, dirty carburetor...

Main causes: mixing too much 2-cycle oil with the gas, dirty air filter, clogged carburetor, engine needs tune up...

Main causes: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank...

Main causes: stale fuel, dirty air filter, bad spark plug, cracked fuel lines, clogged carburetor...

Main causes: bad gas, clogged air filter, cracked fuel lines, clogged fuel filter, dirty carburetor, bad spark plug, wor...

Repair guides for gas leaf blowers

These step-by-step repair guides will help you safely fix what’s broken on your leaf blower.

How to rebuild a leaf blower carburetor

How to rebuild a leaf blower carburetor

If the leaf blower engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow ...

Repair difficulty
Time required
60 minutes or less
How to replace a leaf blower carburetor

How to replace a leaf blower carburetor

The carburetor could be the problem If the leaf blower engine won't start even though there's fuel in the tank. Follow t...

Repair difficulty
Time required
15 minutes or less
How to replace leaf blower fuel lines

How to replace leaf blower fuel lines

Leaf blower fuel lines deteriorate with time and eventually can split or crack. You can remove and replace them yourself...

Repair difficulty
Time required
60 minutes or less

Effective articles & videos to help repair your air handlers

Use the advice and tips in these articles to get the most out of your leaf blower.

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....