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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

Feed Tube Clamp (12) 4037
#10

Model 110 diagram

Feed tube clamp (12)

Part #4037

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

Cork Isolator (6) 4031
#22

Model 110 diagram

Cork isolator (6)

Part #4031

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

Tube-drain 4047

#NI

All parts diagram

Tube-drain

Part #4047

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

O-ring 4006
O-ring

Part #4006

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

Orifice (144/ctn. 12-12pks.) (orifice 4007-white-4201-red) 4007
#5

Model 110 diagram

Orifice (144/ctn. 12-12pks.) (orifice 4007-white-4201-red)

Part #4007

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

Compression Fitting (6) 4002
#2

Model 110 diagram

Compression fitting (6)

Part #4002

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

Parts & More