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Aprilaire
Humidifier

Model # 445 Official Aprilaire humidifier

Here are the diagrams and repair parts for Official Aprilaire 445 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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Showing 10 of 27 parts  |
Wick Pad 12
#11

Model 445 diagram

Wick pad

Part #12

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

Valve Sadd 4001
#1

Model 445 diagram

Valve sadd

Part #4001

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

Humidistat 4258
#25

Model 445 diagram

Humidistat

Part #4258

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

Reservoir 4165
#15

Model 445 diagram

Reservoir

Part #4165

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

Cord-power 4261
#18

Model 445 diagram

Cord-power

Part #4261

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

Float (only) 4088
#3

Model 445 diagram

Float (only)

Part #4088

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

Pump Assembly/motor Board 4009
#4

Model 445 diagram

Pump assembly/motor board

Part #4009

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

Resevoir Liner (8) 4093
#14

Model 445 diagram

Resevoir liner (8)

Part #4093

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

Fan Blade 4090
#8

Model 445 diagram

Fan blade

Part #4090

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

Frame 4171
#21

Model 445 diagram

Frame

Part #4171

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

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