Janitrol
Air Handler

Model # A42-20 Official Janitrol air handler with coil

Here are the diagrams and repair parts for Official Janitrol A42-20 air handler with coil, 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 40 parts  |

Furnace Heating Element Assembly (replaces B1037488, B10374-88)
#7A

Air handler diagram

Heating elem

Part #B10374-68

Replaced by #B1037488S

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Manufacturer substitution
This part replaces B10374-68. Substitute parts can look different from the original.
$141.73
7% OFF Phone Price : $151.73
In Stock
Furnace Heating Element Assembly (replaces B10374-85)
#7

Air handler diagram

Heating elem

Part #B10374-67

Replaced by #B1037485S

?
Manufacturer substitution
This part replaces B10374-67. Substitute parts can look different from the original.
$80.25
6% OFF Phone Price : $85.25
In Stock
Central Air Conditioner Evaporator Coil Drip Pan (replaces B1755917H)
#21

Air handler diagram

Plastic pan

Part #17559-17N

Replaced by #B1755917HDF

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Manufacturer substitution
This part replaces 17559-17N. Substitute parts can look different from the original.
$85.66
6% OFF Phone Price : $90.66
In Stock
Time Delay
#11

Air handler diagram

Time delay

Part #B13707-38

$57.11
8% OFF Phone Price : $62.11
In Stock
Service Coil
#19A

Air handler diagram

Service coil

Part #1585404-42NS

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

Furnace Heater Element with Limit Switch (replaces B10374-89)
#7C

Air handler diagram

Heating elem

Part #B10374-70

Replaced by #B1037489S

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Manufacturer substitution
This part replaces B10374-70. Substitute parts can look different from the original.
In Stock
Motor Run Capacitor
#18

Air handler diagram

Capacitor 7.

Part #B9456-51

Replaced by #12907

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Manufacturer substitution
This part replaces B9456-51. Substitute parts can look different from the original.
This item is not returnable
$3.19
24% OFF Phone Price : $4.19
In Stock
Furnace Blower Fan Wheel
#16

Air handler diagram

Blower wheel

Part #B13680-36

Replaced by #B1368036S

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Manufacturer substitution
This part replaces B13680-36. Substitute parts can look different from the original.
$102.07
9% OFF Phone Price : $112.07
In Stock
White-Rodgers Furnace Heat Sequencer
#9A

Air handler diagram

Sequencer a-

Part #B12565-52

Replaced by #24A34-3

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Manufacturer substitution
This part replaces B12565-52. Substitute parts can look different from the original.
$29.43
15% OFF Phone Price : $34.43
In Stock
Central Air Conditioner Circuit Breaker, 30-amp, 240-volt
#8

Air handler diagram

Circuit breaker

Part #B17535-10

Replaced by #CBK2PD240VC030S

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Manufacturer substitution
This part replaces B17535-10. Substitute parts can look different from the original.
In Stock

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April 19, 2023

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Articles and videos common to all air handlers

Introducing new technical repair content that we’re developing for the Sears Technical Institute
August 05, 2022

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

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