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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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  • Aprilaire 4232 Orifice - Blue

    Aprilaire 4232 Orifice - Blue

    $11.07
  • Aprilaire 4223 Drain Spud

    Aprilaire 4223 Drain Spud

    $14.96
  • Aprilaire51 Current Sensing Relay

    Aprilaire51 Current Sensing Relay

    $53.52
  • Aprilaire 4630 HEATER 1180 Aprilaire 4630 HEATER 1180
    $129.21 Includes FREE Shipping in Continental U.S.
  • Aprilaire 4640 SCALE CONTRL INSERT Aprilaire 4640 SCALE CONTRL INSERT
    $26.04
  • Aprilaire 4217 Scale Control Insert Aprilaire 4217 Scale Control Insert
    $26.98
  • Aprilaire 6506 6" RD CLOSED DAMPER Aprilaire 6506 6" RD CLOSED DAMPER
    $102.98
  • Aprilaire 4220 End Panel Model 550 Aprilaire 4220 End Panel Model 550
    $57.82
  • Aprilaire 4222 Cover Model 550 Aprilaire 4222 Cover Model 550
    $65.08
  • Aprilaire 4229 Saddle Valve Adaptor Aprilaire 4229 Saddle Valve Adaptor
    $52.75
  • Aprilaire 4566 RELAY, AC SAFETY 1150 Aprilaire 4566 RELAY, AC SAFETY 1150
    $95.01
  • Aprilaire 4567 RELAY, DC CONTROL 1150 Aprilaire 4567 RELAY, DC CONTROL 1150
    $43.63
  • Aprilaire 4574 INTERNAL BOARD CONTROLLER Aprilaire 4574 INTERNAL BOARD CONTROLLER
    $305.51 Includes FREE Shipping in Continental U.S.
  • Aprilaire 4664 POWER CORD 700A & 700M Aprilaire 4664 POWER CORD 700A & 700M
    $30.71
  • Aprilaire 4735 ORIFICE PLATE,LFP,AA Aprilaire 4735 ORIFICE PLATE,LFP,AA
    $55.99
  • Aprilaire 4031 Rubber Isolator - 6 pack Aprilaire 4031 Rubber Isolator - 6 pack
    $60.66
  • Aprilaire 4187 Drain Spud 350/360 Aprilaire 4187 Drain Spud 350/360
    $21.34
  • Aprilaire 4269 Float Valve Stopper Aprilaire 4269 Float Valve Stopper
    $18.63
  • Aprilaire 4333 NAME PLATE MODEL 600 Aprilaire 4333 NAME PLATE MODEL 600
    $22.38
  • Aprilaire 4737 LABEL,MANUAL MODE,ADHC Aprilaire 4737 LABEL,MANUAL MODE,ADHC
    $26.03
  • Aprilaire 4751 DUCT COLLAR DEHUMID 2/PK Aprilaire 4751 DUCT COLLAR DEHUMID 2/PK
    $34.47
  • Aprilaire #50 Current Sensing Relay Aprilaire #50 Current Sensing Relay
    $34.45
    2 Review(s)

    Out of stock

  • Aprilaire 4040 Humidifier Solenoid Valve Aprilaire 4040 Humidifier Solenoid Valve
    $75.86

    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
    $9.72

    Out of stock

  • Aprilaire 4010 24VAC Transformer Aprilaire 4010 24VAC Transformer
    $253.37 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 4981 Internal Control Circuit Board Aprilaire 4981 Internal Control Circuit Board
    $182.74 Includes FREE Shipping in Continental U.S.

    Out of stock

  • Aprilaire 4004 In-Line Strainer Aprilaire 4004 In-Line Strainer
    $17.38

    Out of stock

  • Aprilaire 4704 5000 SEAL KIT Aprilaire 4704 5000 SEAL KIT
    $28.75

    Out of stock

  • Aprilaire 4236 Scale Control Insert Aprilaire 4236 Scale Control Insert
    $17.71

    Out of stock

Items 1 to 32 of 214 total

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