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Humidifier Parts & Supplies

Find all of your humidifier needs here with these wide variety of parts and supplies. We carry a large selection of water panels, filters, bottle caps, humidistats, relays, valves, and much more from the most popular brands.

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  • GeneralAire Humidifier – 81-21 Float Assembly

    GeneralAire Humidifier – 81-21 Float Assembly

    $28.93
  • Aprilaire 4222 Cover Model 550

    Aprilaire 4222 Cover Model 550

    $65.08 Includes FREE Shipping in Continental U.S.
  • Aprilaire 4220 End Panel Model 550

    Aprilaire 4220 End Panel Model 550

    $57.82 Includes FREE Shipping in Continental U.S.
  • Aprilaire #50 Current Sensing Relay Aprilaire #50 Current Sensing Relay
    $41.49
    2 Review(s)

    Out of stock

  • Aprilaire 4040 Humidifier Solenoid Valve Aprilaire 4040 Humidifier Solenoid Valve
    $60.66 Includes FREE Shipping in Continental U.S.

    Out of stock

  • Essick Air 32 oz. Bacteria Treatment | 1970 | Required for Evaporative Humidifiers Essick Air 32 oz. Bacteria Treatment | 1970 | Required for Evaporative Humidifiers
    $17.16

    Out of stock

  • Aprilaire 4010 24VAC Transformer Aprilaire 4010 24VAC Transformer
    $28.88

    Out of stock

  • Aprilaire 4981 Internal Control Circuit Board Aprilaire 4981 Internal Control Circuit Board
    $165.55 Includes FREE Shipping in Continental U.S.

    Out of stock

  • Essick Air 509229-1 - Valve Cap Essick Air 509229-1 - Valve Cap
    $10.30

    Out of stock

  • Aprilaire 4004 In-Line Strainer Aprilaire 4004 In-Line Strainer
    $18.25

    Out of stock

  • Aprilaire 4232 Orifice - Blue Aprilaire 4232 Orifice - Blue
    $16.47

    Out of stock

  • Aprilaire 4223 Drain Spud Aprilaire 4223 Drain Spud
    $17.21

    Out of stock

  • Aprilaire 4236 Scale Control Insert Aprilaire 4236 Scale Control Insert
    $21.84

    Out of stock

  • Aprilaire 8052 10K DUCT SENSOR RPC#692 Aprilaire 8052 10K DUCT SENSOR RPC#692
    $20.59

    Out of stock

  • Aprilaire 4704 5000 SEAL KIT Aprilaire 4704 5000 SEAL KIT
    $28.48

    Out of stock

  • Essick Air 1990 Digital Hygrometer / Thermometer Essick Air 1990 Digital Hygrometer / Thermometer
    $24.62

    Out of stock

  • Aprilaire51 Current Sensing Relay Aprilaire51 Current Sensing Relay
    $48.34

    Out of stock

  • Aprilaire 5152 BLOWER ASSEMBLY Aprilaire 5152 BLOWER ASSEMBLY
    $399.41 Includes FREE Shipping in Continental U.S.

    Out of stock

  • Aprilaire 4725 SEALS FOR 2200 APRILAIRE Aprilaire 4725 SEALS FOR 2200 APRILAIRE
    $36.16

    Out of stock

  • Aprilaire 5151 ENERGY MAX TRANS CORE Aprilaire 5151 ENERGY MAX TRANS CORE
    $335.70 Includes FREE Shipping in Continental U.S.

    Out of stock

  • Aprilaire 4630 HEATER 1180 Aprilaire 4630 HEATER 1180
    $133.65 Includes FREE Shipping in Continental U.S.

    Out of stock

  • Aprilaire 4246 Water Distr Tray 760 Aprilaire 4246 Water Distr Tray 760
    $25.27

    Out of stock

  • Aprilaire 4231 Orifice - Yellow Aprilaire 4231 Orifice - Yellow
    $16.47
    1 Review(s)

    Out of stock

  • Aprilaire 4740 RELAY 700A & 700M Aprilaire 4740 RELAY 700A & 700M
    $27.85

    Out of stock

  • Aprilaire 4240 Male Disconnect Aprilaire 4240 Male Disconnect
    $32.29

    Out of stock

  • Aprilaire 4982 - Current Sensing Circuit Board Aprilaire 4982 - Current Sensing Circuit Board
    $125.23 Includes FREE Shipping in Continental U.S.

    Out of stock

  • Aprilaire 4332 DAMPER ASSEM MODEL 600 Aprilaire 4332 DAMPER ASSEM MODEL 600
    $31.40

    Out of stock

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