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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.


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Aprilaire filters product list


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 4515 Blower Motor for 1700 1750 Dehum.
(4515)

The Aprilaire 4515 Blower Motor for 1700/1750 Dehumidifier will keep it running at its best. This blower motor is made specifically for your Aprilaire 1700 or 1750 model dehumidifier and is an essential component to keeping it working properly.

Free shipping within the continental United States!

Special Order. Ships in 10 days.
Aprilaire 4515 Blower Motor for 1700 1750 Dehum.
Our Price: $346.98
Retail: $349.99
You Save 1%!

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Aprilaire 4349 Humidifier Door Catch for 2200 2400 4-Pack 4-Pack
(4349)

The Aprilaire 4349 Humidifier Door Catch for 2200 2400 is a door catch replacement kit for Aprilaire humidifier models 2200 and 2400. This Aprilaire door catch is designed for new style doors. This Aprilaire kit includes a door catch, form seal, and


Special Order. Ships in 7 days.
Aprilaire 4349 Humidifier Door Catch for 2200 2400 4-Pack
Our Price: $20.80

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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 52 days.
Aprilaire 4403 Humidifier Float Chamber
Our Price: $227.70

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Aprilaire 4406 Humidifier Float Valve Assembly
(4406)

The Aprilaire 4406 is the correct replacement for the following humidifier: Aprilaire Model 400 Humidifier


Special Order. Ships in 9 days.
Aprilaire 4406 Humidifier Float Valve Assembly
Our Price: $10.84
Retail: $18.00
You Save 40%!

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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 4184 Water Distribution Tray Nozzle
(Aprilaire 4184)

This is an Aprilaire 4184 Water Distribution Tray Nozzle replacement for the Aprilaire 350 Humidifier, Aprilaire 360 Humidifier, Aprilaire 550 Humidifier, Aprilaire 560 Humidifier, Aprilaire 560A Humidifier, and Aprilaire 568 Humidifier. It fits Apr


Special Order. Ships in 9 days.
Aprilaire 4184 Water Distribution Tray Nozzle
Our Price: $15.99
Retail: $19.99
You Save 20%!

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Aprilaire Spacegard 2200 Air Cleaner Seal Kit 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 10 days.
Aprilaire Spacegard 2200 Air Cleaner Seal Kit
Our Price: $289.50

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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 400 Humidifier Float Cover 4405
(4405)

The Aprilaire 400 is the correct replacement for the following humidifiers: Aprilaire 400 Humidifier Aprilaire 400A Humidifier Aprilaire 400M Humidifier Aprilaire 600 Humidifier


Special Order. Ships in 3 days.
Aprilaire 400 Humidifier Float Cover 4405
Our Price: $18.30
Retail: $19.95
You Save 8%!

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Aprilaire 51 Furnace Current Sensing Relay
(Aprilaire 51)

The Aprilaire 51 is the correct replacement for the following humidifiers:Aprilaire Humidifiers Honeywell HE220, HE225, HE260, HE265, HE360 and HE365 Humidifiers


Special Order. Ships in 7 days.
Aprilaire 51 Furnace Current Sensing Relay
Our Price: $40.99
Retail: $64.70
You Save 37%!

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Aprilaire 4670 Powered Humidifier Motor
(4670)

The Aprilaire 4670 is the correct replacement for the following humidifiers: Aprilaire Model 700A Humidifier Aprilaire Model 700M Humidifier

Free shipping within the continental United States!

Special Order. Ships in 7 days.
Aprilaire 4670 Powered Humidifier Motor
Our Price: $143.57
Retail: $149.99
You Save 4%!

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Aprilaire 4740 Humidifier Fan Relay for 700A 700M
(4740)

The Aprilaire 4740 is the correct replacement for the following humidifiers: Aprilaire Model 700A Humidifier Aprilaire Model 700M Humidifier


Special Order. Ships in 14 days.
Aprilaire 4740 Humidifier Fan Relay for 700A 700M
Our Price: $15.98
Retail: $22.99
You Save 30%!

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Aprilaire 4851 Humidifier Blower Activation Relay 10-Pack
(4851)

The Aprilaire 4851 is the correct replacement for the following humidifiers: Aprilaire 500 Series Humidifiers Aprilaire 600 Series Humidifiers Aprilaire 700 Series Humidifiers


Special Order. Ships in 5 days.
Aprilaire 4851 Humidifier Blower Activation Relay
Our Price: $240.00

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Aprilaire 50 Humidifier Current Sensing Ray
(Aprilaire 50)

The Aprilaire 50 is the correct replacement for the following humidifiers: Aprilaire, Honeywell HE220, HE225, HE260, HE265, HE360 and HE365 humidifiers.


Special Order. Ships in 12 days.
Aprilaire 50 Humidifier Current Sensing Ray
Our Price: $27.00
Retail: $46.62
You Save 42%!

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Aprilaire EZ Kleen Filter Replacement 2-Pack 2-Pack
(5153)

The Aprilaire 5153 fits the following model ventilator: 8100 Energy Recovery Ventilator Aprilaire EZ Kleen Filter Replacement 2-Pack is a washable replacement filter.


Special Order. Ships in 10 days.
Aprilaire EZ Kleen Filter Replacement 2-Pack
Our Price: $43.00

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Aprilaire 5158 Air Flow Measuring Device
(5158)

The Aprilaire 5158 fits the following model ventilator: Aprilaire 8100 Energy Recovery Ventilator The Aprilaire 5158 Air Flow Measuring Device measures the air flow inside the Aprilaire 8100 Energy Recovery Ventilator.

Free shipping within the continental United States!

Special Order. Ships in 14 days.
Aprilaire 5158 Air Flow Measuring Device
Our Price: $101.11
Retail: $271.63
You Save 63%!

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Aprilaire 4594 Duct Mounted Humidistat
(4594)

The Aprilaire 4594 Duct Mounted Humidistat is for use in your Aprilaire 1150,1160, and 800 model whole-house humidifier system. These steam humidifiers are self contained systems and the humidifier humidistat measures and controls the relative humid

Free shipping within the continental United States!

Special Order. Ships in 9 days.
Aprilaire 4594 Duct Mounted Humidistat
Our Price: $158.10
Retail: $199.99
You Save 21%!

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Aprilaire 4640 Humidifier Scale Control Insert 10-Pack
(4640)

The Aprilaire 4640 Humidifier Scale Control Insert is for use in your 500 series model humidifier. This Aprilaire humidifier scale control is a U-shaped piece that encases your humidifiers water panel evaporator.


Special Order. Ships in 9 days.
Aprilaire 4640 Humidifier Scale Control Insert
Our Price: $124.20

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20" Duct Static Bypass - Aprilaire 6220
(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.
20" Duct Static Bypass - Aprilaire 6220
Our Price: $432.62
Retail: $449.99
You Save 4%!

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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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