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Aprilaire 224 Humidifier Parts

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    Select a diagram to view its parts

    Parts
    Parts
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    Evaporative Humidifier Installation Accessories
    Parts

    Diagram

    Parts
    1
    4
    5
    7
    8
    9
    10
    11
    12
    13
    14
    17

    Parts

    1. 1
      Saddle Valve
      Saddle Valve
      SKU: 4001

      1

      Needed
      $5.00
      View Details
    2. 4
      Solenoid Valve
      Solenoid Valve
      SKU: 4040
      24 VAC

      1

      Needed
      $118.45
      View Details
    3. 5
      Red Orifice
      Red Orifice
      SKU: 4021

      1

      Needed
      $5.12
      View Details
    4. 7
      Water Panel Humidifier Pad
      Water Panel Humidifier Pad
      SKU: 12

      1

      Needed
      $25.15
      View Details
    5. 8
      Scale Control Insert
      Scale Control Insert
      SKU: 4023

      1

      Needed
      View Details
    6. 9
      Transformer
      Transformer
      SKU: 4010

      1

      Needed
      $9.95
      View Details
    7. 10
      Analog Humidistat
      Analog Humidistat
      SKU: 4016
      Wall or Duct Mount

      1

      Needed
      View Details
    8. 11
      Water Distibution Cover
      Water Distibution Cover
      SKU: 4044

      1

      Needed
      View Details
    9. 12
      Upper Housing
      Upper Housing
      SKU: 4046

      1

      Needed
      View Details
    10. 13
      Lower Housing
      Lower Housing
      SKU: 4049

      1

      Needed
      View Details
    11. 14
      Closure Clip Set
      Closure Clip Set
      SKU: 4050

      1

      Needed
      View Details
    12. 17
      Strainer Screen
      Strainer Screen
      SKU: 4004

      1

      Needed
      $10.06
      View Details

    Parts Not In Diagram

    1. Not Shown
      Drain Spud
      Drain Spud
      SKU: 4038B
      (Substitute part number)

      1

      Needed
      $19.95
      View Details
    2. Not Shown
      Duct Mount Adaptor Plate
      Duct Mount Adaptor Plate
      SKU: 4039

      1

      Needed
      View Details
    3. Not Shown
      Saddle Valve Adaptor
      Saddle Valve Adaptor
      SKU: 4229

      1

      Needed
      View Details
    4. Not Shown
      AutoTrac Humidistat Controller
      AutoTrac Humidistat Controller
      SKU: 56

      1

      Needed
      $172.33
      View Details
    5. Not Shown
      Current Sensing Relay 24V
      Current Sensing Relay 24V
      SKU: 50
      24 VAC

      1

      Needed
      $69.17
      View Details
    Installation Accessories
    Shop Accessories
    Aprilaire 224 Humidifier Parts

    Documentation

    Aprilaire 224 Humidifier Owner's Manual

    Repair Help

    View available resources

    Overview

    The Aprilaire 224 humidifier requires annual maintenance consisting of replacing the humidifier filter (water panel evaporator) and washing out the pad frame and water distribution tray. If you need to replace the Aprilaire 224 humidifier with an entire new unit, this model has been discontinued. Most parts are still available for this model and listed here.

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