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Aprilaire
Humidifier

Model # 110 Official Aprilaire humidifier

Here are the diagrams and repair parts for Official Aprilaire 110 humidifier, 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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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 32 parts  |
Transformer 4010

#NI

All parts diagram

Transformer

Part #4010

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

Wick Pad 10
#7

Model 110 diagram

Wick pad

Part #10

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

Valve Sadd 4001
#1

Model 110 diagram

Valve sadd

Part #4001

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

Humidistat 4258
#26

Model 110 diagram

Humidistat

Part #4258

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

Humidistat Adapter Plate 4039

#NI

All parts diagram

Humidistat adapter plate

Part #4039

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

Swing Lock Set (6 Sets/ctn.) 4034
#24

Model 110 diagram

Swing lock set (6 sets/ctn.)

Part #4034

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

Water Distribtion Pan Cover 4035
#25

Model 110 diagram

Water distribtion pan cover

Part #4035

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

Disconnect 4014
#11

Model 110 diagram

Disconnect

Part #4014

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

Upper Housing 4017
#14

Model 110 diagram

Upper housing

Part #4017

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

Motor Mounting Plate 4024
#16

Model 110 diagram

Motor mounting plate

Part #4024

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

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