Thermal Zone
Air Handler

Model #AH36B-1 Official Thermal Zone air handler

Here are the diagrams and repair parts for Thermal Zone AH36B-1 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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For DIY troubleshooting advice and repair guides, visit our repair help section.

Showing 10 of 15 parts

Blower Wheel#7

Air handles Diagram

Blower wheel

Part #667037

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

Motor#9

Air handles Diagram

Motor

Part #913357

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

Motor Run Capacitor#8

Air handles Diagram

Capacitor

Part #621435
Replaced by #12908
?
Manufacturer substitution
This part replaces 621435. Substitute parts can look different from the original.
This item is not returnable
In Stock
$5.26 | 
16% OFF 
Phone Price: $6.26
Transformer#4

Air handles Diagram

Transformer

Part #620858

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

CAP, TOP WITH INSULATION#1

Air handles Diagram

Cap, top with insulation

Part #372101Z

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

ELECTRICAL PANEL ASSEMBLY#2

Air handles Diagram

Electrical panel assembly

Part #470720

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

LOWER DOOR WITH INSULATION#12

Air handles Diagram

Lower door with insulation

Part #499871Z

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

Filter Cover#15

Air handles Diagram

Filter cover

Part #257962Z

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

HORIZONTAL DRAIN PAN ASSEMBLY (NOT SHOWN)#16

Air handles Diagram

Horizontal drain pan assembly (not shown)

Part #914729

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

UPPER DOOR, WITH INSULATION#11

Air handles Diagram

Upper door, with insulation

Part #372021Z

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

Articles and videos common to all air handlers

August 5, 2022

Introducing new technical repair content that we’re developing for the Sears Technical Institute

By Lyle Weischwill

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.