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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.

  • FREE Shipping on Orders Over $125 (Continental U.S.)
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  • Aprilaire 4232 Orifice - Blue

    Aprilaire 4232 Orifice - Blue

    $11.07
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4223 Drain Spud

    Aprilaire 4223 Drain Spud

    $14.96
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire51 Current Sensing Relay Aprilaire51 Current Sensing Relay
    $53.52
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4630 HEATER 1180 Aprilaire 4630 HEATER 1180
    $129.21 Includes FREE Shipping in Continental U.S.
  • Aprilaire 4329 COVER MODEL 600 Aprilaire 4329 COVER MODEL 600
    $65.66
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4640 SCALE CONTRL INSERT Aprilaire 4640 SCALE CONTRL INSERT
    $26.04
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4217 Scale Control Insert Aprilaire 4217 Scale Control Insert
    $26.98
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 6506 6" RD CLOSED DAMPER Aprilaire 6506 6" RD CLOSED DAMPER
    $102.98
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4220 End Panel Model 550 Aprilaire 4220 End Panel Model 550
    $57.82
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4222 Cover Model 550 Aprilaire 4222 Cover Model 550
    $65.08
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4229 Saddle Valve Adaptor Aprilaire 4229 Saddle Valve Adaptor
    $52.75
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4566 RELAY, AC SAFETY 1150 Aprilaire 4566 RELAY, AC SAFETY 1150
    $95.01
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4567 RELAY, DC CONTROL 1150 Aprilaire 4567 RELAY, DC CONTROL 1150
    $43.63
    Free Shipping On All Orders Over $125! in Continental U.S.
  • 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
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4735 ORIFICE PLATE,LFP,AA Aprilaire 4735 ORIFICE PLATE,LFP,AA
    $55.99
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4031 Rubber Isolator - 6 pack Aprilaire 4031 Rubber Isolator - 6 pack
    $60.66
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4187 Drain Spud 350/360 Aprilaire 4187 Drain Spud 350/360
    $21.34
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4269 Float Valve Stopper Aprilaire 4269 Float Valve Stopper
    $18.63
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4333 NAME PLATE MODEL 600 Aprilaire 4333 NAME PLATE MODEL 600
    $22.38
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4585 VALVE ASSY,3/4"SWEAT DRN Aprilaire 4585 VALVE ASSY,3/4"SWEAT DRN
    $261.77 Includes FREE Shipping in Continental U.S.
  • Aprilaire 4737 LABEL,MANUAL MODE,ADHC Aprilaire 4737 LABEL,MANUAL MODE,ADHC
    $26.03
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire 4751 DUCT COLLAR DEHUMID 2/PK Aprilaire 4751 DUCT COLLAR DEHUMID 2/PK
    $34.47
    Free Shipping On All Orders Over $125! in Continental U.S.
  • Aprilaire #50 Current Sensing Relay Aprilaire #50 Current Sensing Relay
    $34.45
    Free Shipping On All Orders Over $125! in Continental U.S.
    2 Review(s)

    Out of stock

  • Aprilaire 4040 Humidifier Solenoid Valve Aprilaire 4040 Humidifier Solenoid Valve
    $75.86
    Free Shipping On All Orders Over $125! 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
    $9.72
    Free Shipping On All Orders Over $125! in Continental U.S.

    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
    Free Shipping On All Orders Over $125! in Continental U.S.

    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

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