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Aprilaire
Humidifier

Model # 224 Official Aprilaire humidifier

Here are the diagrams and repair parts for Official Aprilaire 224 humidifier, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 23 parts  |
Transformer 4010
#9

Humidifier diagram

Transformer

Part #4010

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

Wick Pad 12
#7

Humidifier diagram

Wick pad

Part #12

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

Valve Sadd 4001
#1

Humidifier diagram

Valve sadd

Part #4001

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

Lwr Hsng 4049
#13

Humidifier diagram

Lwr hsng

Part #4049

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

Shock Arrestor 4280

#NI08

All parts diagram

Shock arrestor

Part #4280

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

Strainer For Bullet Shaped Solenoid Valve 4103

#NI05

All parts diagram

Strainer for bullet shaped solenoid valve

Part #4103

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

O-ring 4006

#NI04

All parts diagram

O-ring

Part #4006

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

Orifice 4021
#5

Humidifier diagram

Orifice

Part #4021

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

Stainer 4004
#3

Humidifier diagram

Stainer

Part #4004

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

Replacement Kit 4038

#NI06

All parts diagram

Replacement kit

Part #4038

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

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Repair difficulty
Time required
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