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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 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: $345.98
Retail: $349.99
You Save 1%!

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Aprilaire 4517 Humidifier Power Supply
(4517)

The Aprilaire 4517 Dehumidifier Power Supply is a key component to keeping your whole-house dehumidifier working properly. The 4517 power supply replacement keeps your Aprilaire whole-house dehumidifier working at its best.

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Special Order. Ships in 10 days.
Aprilaire 4517 Humidifier Power Supply
Our Price: $108.99
Retail: $199.99
You Save 46%!

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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 14 days.
Aprilaire 4349 Humidifier Door Catch for 2200 2400 4-Pack
Our Price: $16.80

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Aprilaire 4403 Humidifier Float Chamber
(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 54 days.
Aprilaire 4403 Humidifier Float Chamber
Our Price: $36.95
Retail: $39.95
You Save 8%!

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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: $157.10
Retail: $199.99
You Save 21%!

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Aprilaire 4640 Humidifier Scale Control Insert
(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 11 days.
Aprilaire 4640 Humidifier Scale Control Insert
Our Price: $11.42
Retail: $19.99
You Save 43%!

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Aprilaire 4851 Humidifier Blower Activation Relay
(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 7 days.
Aprilaire 4851 Humidifier Blower Activation Relay
Our Price: $23.00
Retail: $44.99
You Save 49%!

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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 9 days.
Aprilaire 4670 Powered Humidifier Motor
Our Price: $142.57
Retail: $149.99
You Save 5%!

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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 5 days.
Aprilaire 400 Humidifier Float Cover 4405
Our Price: $17.30
Retail: $19.95
You Save 13%!

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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 9 days.
Aprilaire 51 Furnace Current Sensing Relay
Our Price: $39.99
Retail: $64.70
You Save 38%!

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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 9 days.
Aprilaire 4236 Humidifier Scale Control Insert
Our Price: $95.88

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Aprilaire 4093 Humidifier Reservoir Liner
(4093)

The Aprilaire 4093 Humidifier Reservoir Liner is a reservoir liner for several models of Aprilaire humidifiers, including the 445, 445A, and 448. This humidifier reservoir liner is a plastic insert that fits in the reservoir located at the base of y


Special Order. Ships in 5 days.
Aprilaire 4093 Humidifier Reservoir Liner
Our Price: $12.99
Retail: $19.13
You Save 32%!

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Aprilaire 4182 Humidifier Water Distribution Tray
(4182)

The Aprilaire 4182 Humidifier Water Distribution Tray evenly distributes water to all of the evaporative panel. The Aprilaire 4182 Water Distribution Tray attaches to the u-shaped scale control insert.


Special Order. Ships in 10 days.
Aprilaire 4182 Humidifier Water Distribution Tray
Our Price: $14.07
Retail: $25.00
You Save 44%!

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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 5 days.
Aprilaire 4183 Humidifier Water Distribution Tray
Our Price: $15.00
Retail: $25.00
You Save 40%!

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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 5 days.
Aprilaire 4185 Humidifier Baffle Replacement
Our Price: $13.69
Retail: $22.38
You Save 39%!

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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 5 days.
Aprilaire 4021 Humidifier Orifice Red
Our Price: $6.75
Retail: $9.99
You Save 32%!

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Aprilaire 4031 Humidifier Cork Motor Isolator
(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 9 days.
Aprilaire 4031 Humidifier Cork Motor Isolator
Our Price: $7.99
Retail: $13.99
You Save 43%!

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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 7 days.
Aprilaire 4007 Humidifier Orifice White
Our Price: $23.88

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Aprilaire 6705 - 5 Inch Round Slip-In HVAC Damper
(Aprilaire 6705)

The Aprilaire 6705 - 5 Inch Round Slip-In HVAC Damper is a spring-return damper designed to be inserted in a five inch round branch duct. This HVAC damper helps zone your home without costly duct modification. The Aprilaire damper provides true comf


Special Order. Ships in 9 days.
Aprilaire 6705 - 5 Inch Round Slip-In HVAC Damper
Our Price: $73.81
Retail: $79.99
You Save 8%!

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Aprilaire 6706 - 6" Round Damper - Slip-In
(Aprilaire 6706)

The Aprilaire 6706 - 6" Round Damper - Slip-In is a spring-return damper designed to be inserted in a six inch round branch duct. This HVAC damper helps zone your home without costly duct modification. The Aprilaire damper provides true comfort thro


Special Order. Ships in 11 days.
Aprilaire 6706 - 6" Round Damper - Slip-In
Our Price: $67.95
Retail: $79.99
You Save 15%!

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Aprilaire 6707 - Slip-in Round 7" Damper
(Aprilaire 6707)

The Aprilaire 6707 - Slip-in Round 7" Damper is a spring-return damper designed to be inserted in a seveb inch round branch duct. This HVAC damper helps zone your home without costly duct modification. The Aprilaire damper provides true comfort thro


Special Order. Ships in 11 days.
Aprilaire 6707 - Slip-in Round 7" Damper
Our Price: $78.50
Retail: $79.99
You Save 2%!

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Aprilaire 6708 - Slip-In Vent Damper - 8"
(Aprilaire 6708)

The Aprilaire 6706 - 6" Round Damper - Slip-In is a spring-return damper designed to be inserted in an eight inch round branch duct. This HVAC damper helps zone your home without costly duct modification. The Aprilaire damper provides true comfort t


Special Order. Ships in 9 days.
Aprilaire 6708 - Slip-In Vent Damper - 8"
Our Price: $81.61
Retail: $89.99
You Save 9%!

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Aprilaire 6710 - HVAC Vent Damper - 10"
(Aprilaire 6710)

The Aprilaire 6710 is a round slip-in style damper with the following diameter: 10 inches The Aprilaire 6710 - HVAC Vent Damper - 10" is a simple solution to providing comfort control zoning in your home. This Aprilaire damper measures 12.6 in


Special Order. Ships in 9 days.
Aprilaire 6710 - HVAC Vent Damper - 10"
Our Price: $97.17
Retail: $99.99
You Save 3%!

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Aprilaire 6721 Rectangular Duct Damper - 8"x 8"
(Aprilaire 6721)

The Aprilaire 6721 is an automatic damper of the following size: 8 inches x 8 inches The Aprilaire 6721 Rectangular Duct Damper - 8"x 8" is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This motorize

Free shipping within the continental United States!

Special Order. Ships in 6 days.
Aprilaire 6721 Rectangular Duct Damper - 8"x 8"
Our Price: $140.07
Retail: $149.99
You Save 7%!

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Aprilaire 6726 HVAC Rectangular Damper - 8"x 18"
(Aprilaire 6726)

The Aprilaire 6726 is an automatic damper of the following size: 8 inches x 18 inches The Aprilaire 6726 HVAC Rectangular Damper - 8"x 18" is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This motori

Free shipping within the continental United States!

Special Order. Ships in 9 days.
Aprilaire 6726 HVAC Rectangular Damper - 8"x 18"
Our Price: $151.34
Retail: $199.99
You Save 24%!

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Filters Fast - Aprilaire filters

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