Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
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.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
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

Closure Clip Set 4050
#14

Humidifier diagram

Closure clip set

Part #4050

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

Lwr Hsng 4049
#13

Humidifier diagram

Lwr hsng

Part #4049

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

Screw And Clip Set 4027
#2

Humidifier diagram

Screw and clip set

Part #4027

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

Humidistat Adapter Plate 4039

#NI07

All parts diagram

Humidistat adapter plate

Part #4039

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

Retainer 4052
#15

Humidifier diagram

Retainer

Part #4052

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

Repair guides for side-by-side refrigerators

How to replace a foamed-in-place door gasket in a side-by-side refrigerator

How to replace a foamed-in-place door gasket in a side-by-side refrigerator

The door gasket seals the gap around the door to keep the cold air in and the warm air out. Replace a worn or damaged do…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a defrost sensor in a side-by-side refrigerator

How to replace a defrost sensor in a side-by-side refrigerator

If frost is building up in the freezer of your side-by-side refrigerator, the defrost sensor could be at fault. You can …

Read more
Repair difficulty
Time required
 45 minutes or less

Articles and videos for side-by-side refrigerators

How to Replace the Water Filter in an RCA Refrigerator

How to Replace the Water Filter in an RCA Refrigerator

Changing the water filter in an RCA refrigerator shouldn’t be overlooked. Take a look at how easy this routine maintenan…

Read more
How to Replace the Water Filter in a GE Refrigerator

How to Replace the Water Filter in a GE Refrigerator

See how to install the water filter on your GE refrigerator, no matter the filter type or refrigerator style.…

Read more
How to Replace the Water Filter in a Maytag Refrigerator

How to Replace the Water Filter in a Maytag Refrigerator

No matter what style Maytag refrigerator you have, we can walk you through replacing the water filter.…

Read more

Parts & More