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 # 112 Official Aprilaire humidifier

Here are the diagrams and repair parts for Official Aprilaire 112 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 33 parts  |
Transformer 4010

#NI

All parts diagram

Transformer

Part #4010

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

Valve Sadd 4001
#1

Model 112 diagram

Valve sadd

Part #4001

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

Wick Pad 12
#7

Model 112 diagram

Wick pad

Part #12

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

Humidistat 4258
#26

Model 112 diagram

Humidistat

Part #4258

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

Lwr Housng 4020
#15

Model 112 diagram

Lwr housng

Part #4020

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

Relay 4012

#NI

All parts diagram

Relay

Part #4012

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

Stainer 4004
#19

Model 112 diagram

Stainer

Part #4004

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

Cord-power 4260
#12

Model 112 diagram

Cord-power

Part #4260

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

Valve 4005
#4

Model 112 diagram

Valve

Part #4005

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

Disconnect 4014
#11

Model 112 diagram

Disconnect

Part #4014

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

Repair guides for rear-engine riding mowers

How to adjust the neutral control on a zero-turn riding mower

How to adjust the neutral control on a zero-turn riding mower

Adjust the neutral control if your zero-turn riding mower creeps forward or backward while both steering lap bars are in…

Read more
Repair difficulty
Time required
 45 minutes or less
How to remove the mower deck on a zero-turn riding mower

How to remove the mower deck on a zero-turn riding mower

Follow the steps in this guide to remove the mower deck for cleaning or inspection.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a cutting blade on a zero-turn riding mower

How to replace a cutting blade on a zero-turn riding mower

Replace a bent or dull cutting blade in 30 minutes or less. …

Read more
Repair difficulty
Time required
 15 minutes or less

Articles and videos for rear-engine riding mowers

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Read more
Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Read more
When to maintain a zero-turn lawn tractor

When to maintain a zero-turn lawn tractor

Learn what you can do to keep your zero-turn lawn tractor cutting well.…

Read more

Parts & More