Model 400

Filter

Sort

AprilAire 45 Replacement Water Panel Humidifier Filter For Humidifier Models: 400, 400A, and 400M

AprilAire 45 Replacement Water Panel Humidifier Filter For Humidifier Models: 400, 400A, and 400M

Aprilaire 4040 Solenoid Valve top right view

AprilAire 4040 Solenoid Valve, 24 Volt for Humidifier Models 400, 500, 600, and 700

AprilAire 4788 Maintenance Kit With Water Panel 45 For Humidifier Models 400, 400A, 400M

AprilAire 4788 Maintenance Kit With Water Panel 45 For Humidifier Models 400, 400A, 400M

Aprilaire 4335 Feed Tube with Sleeve

AprilAire 4335 Feed Tube with Sleeve for Humidifier Models 400, 500, 600

AprilAire 4004 In-Line Strainer for Humidifier Models 220, 224, 350, 360, 400, 400A, 400M, 500 Series, 600 Series, and 700 Series

AprilAire 4004 In-Line Strainer for Humidifier Models 220, 224, 350, 360, 400, 400A, 400M, 500 Series, 600 Series, and 700 Series

AprilAire 4231 Humidifier Yellow Orifice Hero Photo

APRILAIRE 4231 YELLOW ORIFICE FOR HUMIDIFIER MODELS 400, 500, 550, 558, 560, 568, 600, 700

AprilAire 4655 Manual Humidistat

AprilAire 4655 Manual Humidistat

Aprilaire 8052 Outdoor Temperature Sensor

AprilAire 8052 Outdoor Temperature Sensor for Humidifier Models 56, 57, 58, 62, 400, 500, 600, 700, 800

AprilAire 4407 Water Distribution Tray for Humidifier Model 400

AprilAire 4407 Water Distribution Tray for Humidifier Model 400

AprilAire 4406 Float Assembly for Humidifier Model 400

AprilAire 4406 Float Assembly for Humidifier Model 400

The Aprilaire 4403 Scale Control is used with the number 45 water panel and 4407 water distribution tray

AprilAire 4403 Scale Control Insert for Humidifier Model 400

Sold Out

AprilAire 4405 Float Cover for Humidifier Model 400

AprilAire 4405 Float Cover for Humidifier Model 400

AprilAire H445EZ1A Humidifier Water Panel Assembly With Packaging Photo

AprilAire H445EZ1A Humidifier Filter / Water Panel Assembly Replacement Kit for AprilAire Whole-House Humidifier Models: 400, 400A, and 400M (2-pack)

AprilAire 400 And 600 Humidifier Features Web Ready Photo

AprilAire 400 Whole-House Water Saver Evaporative Humidifier