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  1. Home
  2. Humidifiers
  3. Evaporative & Fan Powered
  4. Model 400 Parts

Aprilaire 400 Humidifier Series Parts

17 GPD 12 GPD 17 GPD 18 GPD
  • 700
  • 600
  • 500
  • 400

The following diagram displays parts specific for the Aprilaire Drainless FlowThru whole-house humidifier 17gpd, with Digital Humidistat, model 400M & 400A. Visiting each part landing page will provide detailed part information, pricing and availability.

Humidistat In-line Strainter Selenoid Valve Yellow Orifice Feed Tube Distribution Tray Water Panel Float Cover Float Assembly Base Assembly Level Sensor Saddle Valve Transformer Damper Assem Panel Frame Cover Buy New Model 400
  • Aprilaire 400 Manual
  • Aprilaire 400 Parts List
  • Humidifier Brochure
  • Aprilaire 400 Service

Featured Products

Humidifier Solenoid Valve 24v with Strainer
(0)
Humidifier Solenoid Valve 24v with Strainer
$38.00 $28.00 Sale
Free Shipping.
Add To Cart
24v Universal Humidifier Solenoid Valve
(0)
24v Universal Humidifier Solenoid Valve
$38.00 $28.00 Sale
Free Shipping.
Add To Cart
29.25
(0)
29.25" Cut-To-Size Feed Tube for Aprilaire Bypass Humidifiers
$12.00
Add To Cart

Products [33]

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Aprilaire Humidifier Solenoid Valve 24v used in 400 500 600 700 Series
(0)
Aprilaire Humidifier Solenoid Valve 24v used in 400 500 600 700 Series
$60.00
Add To Cart
Aprilaire In-Line Strainer used in Solenoid Valves
(0)
Aprilaire In-Line Strainer used in Solenoid Valves
$8.50
Add To Cart
Skuttle Humidifier 10 Micron Water Filter with Activated Carbon
(0)
Skuttle Humidifier 10 Micron Water Filter with Activated Carbon
Not for Sale.
Aprilaire Model 56 Auto Trac Humidistat w/Outdoor Sensor
(0)
Aprilaire Model 56 Auto Trac Humidistat w/Outdoor Sensor
Not for Sale.
Aprilaire Current Sensing Relay for 24v Humidifier Control
(0)
Aprilaire Current Sensing Relay for 24v Humidifier Control
$49.00
Add To Cart
Aprilaire 45 Water Panel Pad Humidifier Filter 2-Pack
(0)
Aprilaire 45 Water Panel Pad Humidifier Filter 2-Pack
$35.00
Add To Cart
Aprilaire Yellow Orifice used in 400 500 600 Series
(0)
Aprilaire Yellow Orifice used in 400 500 600 Series
$5.00
Add To Cart
Humidifier Brass Saddle Valve Self Piercing
(0)
Humidifier Brass Saddle Valve Self Piercing
$5.00
Add To Cart
Skuttle Humidifier Transformer 10w 24v
(0)
Skuttle Humidifier Transformer 10w 24v
$28.00
Add To Cart
Feed Tube for Aprilaire 400 500 & 600 Humidifier
(0)
Feed Tube for Aprilaire 400 500 & 600 Humidifier
$9.55
Add To Cart
Bypass Damper for Aprilaire 400 500 600 Series
(0)
Bypass Damper for Aprilaire 400 500 600 Series
$33.00
Add To Cart
Water Panel Frame Scale Control Insert with Float Chamber
(0)
Water Panel Frame Scale Control Insert with Float Chamber
$15.00
Add To Cart
Float Tray Cover Black Plastic for Aprilaire 400 Series
(0)
Float Tray Cover Black Plastic for Aprilaire 400 Series
$17.00
Add To Cart
Float for Aprilaire 400 Series
(0)
Float for Aprilaire 400 Series
$16.00
Add To Cart
Water Distribution Tray for Model 400 Humidifier
(0)
Water Distribution Tray for Model 400 Humidifier
$19.99
Add To Cart
Water Level Sensor Assembly for Aprilaire 400 Series
(0)
Water Level Sensor Assembly for Aprilaire 400 Series
$31.00
Add To Cart
Humidifier Base for Aprilaire 600 and 400 Series
(0)
Humidifier Base for Aprilaire 600 and 400 Series
$180.00
Add To Cart
Aprilaire 58 Digital Automatic Humidistat w/Outdoor Sensor
(0)
Aprilaire 58 Digital Automatic Humidistat w/Outdoor Sensor
$84.00
Not for Sale.
Aprilaire Manual Humidistat spst Wall or Duct Mount
(0)
Aprilaire Manual Humidistat spst Wall or Duct Mount
$42.00
Add To Cart
Maintenance Kit For Aprilaire Model 400 400A 400M
(0)
Maintenance Kit For Aprilaire Model 400 400A 400M
$119.00
Add To Cart
1 2 Next Page View All

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