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Aprilaire 300 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
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    19

    Parts

    1. 1
      Water Panel Humidifier Pad
      Water Panel Humidifier Pad
      SKU: 35

      1

      Needed
      $18.85
      View Details
    2. 2
      Solenoid Valve
      Solenoid Valve
      SKU: APR5926

      1

      Needed
      $158.30
      View Details
    3. 3
      Water Distribution Tray
      Water Distribution Tray
      SKU: 4182

      1

      Needed
      $42.09
      View Details
    4. 4
      Scale Control Insert
      Scale Control Insert
      SKU: 4181
      Model: 300, 350, 360

      1

      Needed
      $39.56
      View Details
    5. 5
      Nozzle Kit
      Nozzle Kit
      SKU: APR5937

      1

      Needed
      $28.87
      View Details
    6. 6
      Blue Orifice
      Blue Orifice
      SKU: 4232

      1

      Needed
      $5.12
      View Details
    7. 7
      Strainer Screen
      Strainer Screen
      SKU: 4004

      1

      Needed
      $10.06
      View Details
    8. 8
      Nozzle
      Nozzle
      SKU: 4184

      1

      Needed
      $14.95
      View Details
    9. 9
      Drain Spud Kit
      Drain Spud Kit
      SKU: 4187

      1

      Needed
      $12.42
      View Details
    10. 10
      PCBA
      PCBA
      SKU: APR5935

      1

      Needed
      $195.38
      View Details
    11. 11
      Capacitor
      Capacitor
      SKU: APR5933

      1

      Needed
      $13.00
      View Details
    12. 12
      Power Cord
      Power Cord
      SKU: APR5939

      1

      Needed
      $44.45
      View Details
    13. 13
      Access Cover
      Access Cover
      SKU: APR5931

      1

      Needed
      $87.17
      View Details
    14. 14
      Access Knobs
      Access Knobs
      SKU: APR5934

      1

      Needed
      $9.78
      View Details
    15. 15
      Flange
      Flange
      SKU: APR5932

      1

      Needed
      $74.98
      View Details
    16. 16
      Fan with Capacitor
      Fan with Capacitor
      SKU: APR5929

      1

      Needed
      $304.49
      View Details
    17. 17
      Electrical Cover
      Electrical Cover
      SKU: APR5930

      1

      Needed
      $57.27
      View Details
    18. 18
      Mounting Bracket
      Mounting Bracket
      SKU: APR5938

      1

      Needed
      $127.13
      View Details
    19. 19
      Saddle Valve
      Saddle Valve
      SKU: 4001

      1

      Needed
      $5.00
      View Details

    Parts Not In Diagram

    1. Not Shown
      Wet Pack Maintenance Kit For Model 300
      Wet Pack Maintenance Kit For Model 300
      SKU: APR5936

      1

      Needed
      $178.88
      View Details
    2. Not Shown
      Automatic Humidistat Controller
      Automatic Humidistat Controller
      SKU: 65
      $203.09
      View Details
    Installation Accessories
    Shop Accessories
    Aprilaire 300 Humidifier Parts

    Documentation

    Aprilaire 300 Humidifier Owner's Manual
    Aprilaire 300 Humidifier Installation Guide
    Aprilaire 300 Humidifier Specification Sheet
    Aprilaire 300 Humidifier Submittal Sheet

    Repair Help

    View available resources

    Overview

    The Aprilaire 300 humidifier is a self contained evaporative humidifier. It can deliver up to 13 gallons of moisture per day. Annual maintenance consists of replacing the humidifier filter (water panel evaporator) and washing out the pad frame and water distribution tray.

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