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Aprilaire entered the indoor air quality industry in 1938. Less than two decades later, they produced the first marketed, whole-home, evaporative humidifier in the United States. Since that time, they have expanded their product line to include not only humidifiers, but also air cleaners, dehumidifiers, thermostats, ventilation and zone control systems.

The company’s focus has always been to design, create and manufacture top level products to help improve indoor air quality. Commitment to discovering new, innovative ways to establish healthy indoor environments, whether in homes or businesses has contributed to Aprilaire remaining a leader in the HVAC industry.

When it is time to replace the filters on your Aprilaire products, such as humidifiers and air cleaners, make sure you choose genuine Aprilaire replacement filters and parts.


Aprilaire filters full product list:


Aprilaire 6218 18" Duct Static Bypass
(Aprilaire 6218)

The 18" Duct Static Bypass - Aprilaire 6218 is a static pressure bypass damper with a round shape. The Aprilaire static bypass measures 18 inches in diameter and provides a heightened level of control for your zoning applications. This 18" static by

Free shipping within the continental United States!

In stock! Ships in 1 business day.
Aprilaire 6218 18" Duct Static Bypass
Our Price: $371.48
Retail: $399.99
You Save 7%!

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Aprilaire 4217 Humidifier Float Chamber
(4217)

The Aprilaire 4217 is a humidifier float chamber filter that works with your Aprilaire 550 and 558 model humidifiers. The Aprilaire 4217 Humidifier Float Chamber is a U-shaped component that encases the water panel inside your humidifier. This will


In Stock! Ships in 8 to 9 business days.
Aprilaire 4217 Humidifier Float Chamber
Our Price: $56.49

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Aprilaire 4236 Humidifier Float Chamber 12-Pack
(4236)

The Aprilaire 4236 is a humidifier float chamber filter that works with your select Aprilaire humidifier. The 4236 is a U-shaped component that encases the water panel inside your humidifier. This will direct any mineral deposit build up back into y


Special Order. Ships in 8 days.
Aprilaire 4236 Humidifier Float Chamber
Our Price: $143.40

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Aprilaire 4183 Humidifier Water Distribution Tray
(4183)

The Aprilaire 4183 Humidifier Water Distribution Tray Cover is a plastic cover that fits into the top of the humidifier water distribution tray. This water tray cover weighs 2.4 ounces.


Special Order. Ships in 3 days.
Aprilaire 4183 Humidifier Water Distribution Tray
Our Price: $16.00
Retail: $25.00
You Save 36%!

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Aprilaire 4185 Humidifier Baffle Replacement
(4185)

The Aprilaire 4185 Humidifier Baffle Replacement attaches to the inside of the humidifier's housing and holds the water feed nozzle in place.


Special Order. Ships in 3 days.
Aprilaire 4185 Humidifier Baffle Replacement
Our Price: $14.69
Retail: $22.38
You Save 34%!

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Aprilaire 4247 Humidifier Fan Blade Replacement
(4247)

The Aprilaire 4247 Humidifier Fan Blade is a genuine replacement for your Aprilaire whole house humidifier system. This humidifier fan blade keeps your Aprilaire 700 series humidifier system working at its best.


Special Order. Ships in 9 days.
Aprilaire 4247 Humidifier Fan Blade Replacement
Our Price: $22.39
Retail: $28.00
You Save 20%!

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Aprilaire 4403 Humidifier Float Chamber 6-Pack
(4403)

The Aprilaire 4403 Humidifier Float Chamber is a float chamber for Aprilaire 400 model humidifiers. This float chamber is a U-shaped component that encases the water panel of the humidifier and directs any built-up mineral deposits back into the wat


Special Order. Ships in 40 days.
Aprilaire 4403 Humidifier Float Chamber
Our Price: $227.70

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Aprilaire 4410 Humidifier Water Level Sensor
(4410)

The Aprilaire 4410 is the correct replacement for the following humidifiers: Aprilaire Model 400 Humidifier Aprilaire Model 400A Humidifier Aprilaire Model 400M Humidifier


Special Order. Ships in 19 days.
Aprilaire 4410 Humidifier Water Level Sensor
Our Price: $33.88
Retail: $34.99
You Save 3%!

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Aprilaire 4007 Humidifier Orifice White 12-Pack
(4007)

The Aprilaire 4007 is the correct replacement for the following humidifiers: Aprilaire Model 110 Humidifier Aprilaire Model 220 Humidifier


Special Order. Ships in 9 days.
Aprilaire 4007 Humidifier Orifice White
Our Price: $35.88

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Aprilaire 4021 Humidifier Orifice Red
(4021)

The Aprilaire 4021 is the correct replacement for the following humidifiers: Aprilaire Model 112 Humidifier Aprilaire Model 224 Humidifier


Special Order. Ships in 8 days.
Aprilaire 4021 Humidifier Orifice Red
Our Price: $7.75
Retail: $9.99
You Save 22%!

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Aprilaire 4031 Humidifier Cork Motor Isolator 6-Pack
(4031)

The Aprilaire 4031 is the correct replacement for the following humidifiers: Aprilaire Model 700 Humidifier Aprilaire Model 700 Humidifier Aprilaire Model 700M Humidifier Aprilaire Model 760 Humidifier Aprilaire Model 760A Humidifier


Special Order. Ships in 6 days.
Aprilaire 4031 Humidifier Cork Motor Isolator
Our Price: $53.94

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Aprilaire 4330 Humidifier Scale Control Insert 8-Pack
(Aprilaire 4330)

This is an Aprilaire 4330 Humidifier Scale Control Insert replacement for use in conjunction with the Aprilaire Water Panel Evaporator and the Aprilaire Water Distribution Tray in the following Aprilaire humidifiers: Aprilaire 600 Humidifiers, April


Special Order. Ships in 7 days.
Aprilaire 4330 Humidifier Scale Control Insert
Our Price: $79.92

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Aprilaire 4785 Maintenance Kit with Water Panel 35
(Aprilaire 4785)

The Aprilaire 350 / Aprilaire 360 Humidifier Maintenance Kit is a set of humidifier replacement parts for use with the Aprilaire 350 humidifier and Aprilaire 360 humidifier.


Special Order. Ships in 9 days.
Aprilaire 4785 Maintenance Kit with Water Panel 35
Our Price: $78.85
Retail: $99.99
You Save 21%!

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Aprilaire 4725 Seal Kit for Air Purifier Model 2200 10-Pack
(Aprilaire 4725)

The Aprilaire Spacegard 2200 Air Cleaner Seal Kit (Aprilaire 4725) is for use with the Aprilaire 2200 air cleaner and the Space-Gard 2200 air cleaner. This kit includes the necessary seals which are used to seal the following contacts: (1) between t


Special Order. Ships in 9 days.
Aprilaire 4725 Seal Kit for Air Purifier Model 2200
Our Price: $289.50

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Spacegard Aprilaire 2600 Filter Media Replacement 10-Pack
(Aprilaire 261)

This genuine Spacegard Aprilaire 2600 Filter Media Replacement, also known as the Aprilaire 261 Filter, is the replacement filter used in the Spacegard Aprilaire 2600 Air Cleaner. The Aprilaire 261 Air Filter / Aprilaire 2600 Replacement Filter is a


Special Order. Ships in 7 days.
Spacegard Aprilaire 2600 Filter Media Replacement
Our Price: $639.90

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Aprilaire 4236 Humidifier Scale Control Insert 12-Pack
(Aprilaire 4236)

This is an Aprilaire 4236 Humidifier Scale Control Insert replacement for use in conjunction with the Aprilaire 35 Water Panel Evaporator and the Aprilaire 4277 Water Distribution Tray in the following Aprilaire humidifiers: Aprilaire 560 Humidifier


Special Order. Ships in 8 days.
Aprilaire 4236 Humidifier Scale Control Insert
Our Price: $143.40

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Aprilaire Humidifier Saddle Valve - Aprilaire 4001
(Aprilaire 4001)

This Aprilaire Humidifier Saddle Valve (Aprilaire 4001) is used with the Aprilaire 4040 Humidifier Solenoid Valve in numerous Aprilaire humidifier models. The Aprilaire Saddle Valve is a self tappin


Special Order. Ships in 9 days.
Aprilaire Humidifier Saddle Valve - Aprilaire 4001
Our Price: $10.95
Retail: $12.99
You Save 16%!

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Aprilaire 6220 20" Duct Static Bypass
(Aprilaire 6220)

The 20" Duct Static Bypass - Aprilaire 6220 is a static pressure bypass damper with a round shape. The Aprilaire static bypass measures 20 inches in diameter and provides a heightened level of control for your zoning applications. This 20" static by

Free shipping within the continental United States!

Special Order. Ships in 7 days.
Aprilaire 6220 20" Duct Static Bypass
Our Price: $432.62
Retail: $449.99
You Save 4%!

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Aprilaire 8081 Temperature Sensor Module
(Aprilaire 8081)

The Aprilaire 8081 Temperature Sensor Module is designed for use with the Aprilaire model 8800 Universal Communicating Thermostat and supports one onboard and one external temperature sensor. This temperature module can be used to monitor temperatur

Free shipping within the continental United States!

Special Order. Ships in 10 days.
Aprilaire 8081 Temperature Sensor Module
Our Price: $90.95
Retail: $99.99
You Save 9%!

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Aprilaire 6303 Zone Control Panel
(Aprilaire 6303)

The Aprilaire 6303 Zone Control Panel is specially designed for use with single-stage compressor, heat pump systems only. The Aprilaire control panel provides independent control for each zone and assures air is directed to the last zone calling thr

Free shipping within the continental United States!

Special Order. Ships in 15 days.
Aprilaire 6303 Zone Control Panel
Our Price: $136.92
Retail: $144.99
You Save 6%!

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Aprilaire 6404 - Zone Comfort Control Panel
(Aprilaire 6404)

The Aprilaire 6404 - Zone Comfort Control Panel can be used for any type of zoning application from two to twelve zones. The Aprilaire control panel is configurable for single- or multi-stage, heat/cool or heat pump, and is ideal for use in resident

Free shipping within the continental United States!

Special Order. Ships in 13 days.
Aprilaire 6404 - Zone Comfort Control Panel
Our Price: $230.99
Retail: $299.99
You Save 23%!

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Aprilaire 6210 - 10" Duct Static Bypass
(Aprilaire 6210)

The 10" Duct Static Bypass - Aprilaire 6210 is a static pressure bypass damper with a round shape. The Aprilaire static bypass measures 10 inches in diameter and provides a heightened level of control for your zoning applications. This 10" static by

Free shipping within the continental United States!

Special Order. Ships in 7 days.
Aprilaire 6210 - 10" Duct Static Bypass
Our Price: $318.75
Retail: $329.99
You Save 3%!

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Aprilaire 6212 - 12" Duct Static Bypass
(Aprilaire 6212)

The 12" Duct Static Bypass - Aprilaire 6212 is a static pressure bypass damper with a round shape. The Aprilaire static bypass measures 12 inches in diameter and provides a heightened level of control for your zoning applications. This 12" static by

Free shipping within the continental United States!

Special Order. Ships in 7 days.
Aprilaire 6212 - 12" Duct Static Bypass
Our Price: $321.59
Retail: $329.99
You Save 3%!

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Aprilaire 6214 - 14" Duct Static Bypass
(Aprilaire 6214)

The 14" Duct Static Bypass - Aprilaire 6214 is a static pressure bypass damper with a round shape. The Aprilaire static bypass measures 14 inches in diameter and provides a heightened level of control for your zoning applications. This 14" static by

Free shipping within the continental United States!

Special Order. Ships in 7 days.
Aprilaire 6214 - 14" Duct Static Bypass
Our Price: $330.02

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Aprilaire 6216 16" Duct Static Bypass
(Aprilaire 6216)

The 16" Duct Static Bypass - Aprilaire 6216 is a static pressure bypass damper with a round shape. The Aprilaire static bypass measures 16 inches in diameter and provides a heightened level of control for your zoning applications. This 16" static by

Free shipping within the continental United States!

Special Order. Ships in 7 days.
Aprilaire 6216 16" Duct Static Bypass
Our Price: $367.97
Retail: $399.90
You Save 8%!

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