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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 6727 - Automatic Vent Damper - 8" x 20"
(Aprilaire 6727)

The Aprilaire 6727 is an automatic damper of the following size: 8 inches x 20 inches The Aprilaire 6727 - Automatic Vent Damper - 8" x 20" is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This motor

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Special Order. Ships in 11 days.
Aprilaire 6727 - Automatic Vent Damper - 8" x 20"
Our Price: $129.97
Retail: $149.99
You Save 13%!

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Aprilaire 6728 - Motorized Air Damper - 8" x 22"
(Aprilaire 6728)

The Aprilaire 6728 is an automatic damper of the following size: 8 inches x 22 inches The Aprilaire 6728 - Motorized Air Damper - 8" x 22" is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This motori

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Special Order. Ships in 8 days.
Aprilaire 6728 - Motorized Air Damper - 8" x 22"
Our Price: $157.67
Retail: $199.99
You Save 21%!

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Aprilaire 6729 Automatic Vent Damper - 8" x 24"
(Aprilaire 6729)

The Aprilaire 6729 is an automatic damper of the following size: 8 inches x 24 inches The Aprilaire 6729 Automatic Vent Damper - 8" x 24" is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This motoriz

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Special Order. Ships in 9 days.
Aprilaire 6729 Automatic Vent Damper - 8" x 24"
Our Price: $135.65
Retail: $149.99
You Save 10%!

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Aprilaire 6730 Rectangular Vent Damper - 8" x 26"
(Aprilaire 6730)

The Aprilaire 6730 Rectangular Vent Damper - 8" x 26" is ideal for use in residential applications. This rectangular duct damper features an exclusive Flexible Link design and installs in 4.24" slots within the duct. This Aprilaire damper features a

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Special Order. Ships in 9 days.
Aprilaire 6730 Rectangular Vent Damper - 8" x 26"
Our Price: $164.69
Retail: $199.99
You Save 18%!

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Aprilaire 6731 Motorized Duct Damper - 8" x 28"
(Aprilaire 6731)

The Aprilaire 6731 Motorized Duct Damper - 8" x 28" is ideal for use in residential applications. This rectangular duct damper features an exclusive Flexible Link design and installs in 4.24" slots within the duct. This Aprilaire damper features an

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Special Order. Ships in 9 days.
Aprilaire 6731 Motorized Duct Damper - 8" x 28"
Our Price: $168.91
Retail: $199.99
You Save 16%!

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Aprilaire 6732 Rectangular Duct Damper - 10" x 10"
(Aprilaire 6732)

The Aprilaire 6732 is an automatic damper of the following size: 10 inches x 10 inches The Aprilaire 6732 Rectangular Duct Damper - 10" x 10" is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This mot

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Special Order. Ships in 9 days.
Aprilaire 6732 Rectangular Duct Damper - 10" x 10"
Our Price: $144.98
Retail: $149.99
You Save 3%!

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Rectangular Air Damper 10" x 12" - Aprilaire 6733
(Aprilaire 6733)

The Aprilaire 6733 is an automatic damper of the following size: 10 inches x 12 inches The Rectangular Air Damper 10" x 12" - Aprilaire 6733 is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This moto

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Special Order. Ships in 9 days.
Rectangular Air Damper 10" x 12" - Aprilaire 6733
Our Price: $149.90
Retail: $199.99
You Save 25%!

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Aprilaire 6734 Auto HVAC Damper - 10" x 14"
(Aprilaire 6734)

The Aprilaire 6734 is an automatic damper of the following size: 10 inches x 14 inches The Aprilaire 6734 Auto HVAC Damper - 10" x 14" is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This motorized

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Special Order. Ships in 9 days.
Aprilaire 6734 Auto HVAC Damper - 10" x 14"
Our Price: $170.95
Retail: $199.99
You Save 15%!

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Aprilaire 6735 Air Vent Damper - 10" x 16"
(Aprilaire 6735)

The Aprilaire 6735 is an automatic damper of the following size: 10 inches x 16 inches The Aprilaire 6735 Air Vent Damper - 10" x 16" is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This motorized d

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Special Order. Ships in 9 days.
Aprilaire 6735 Air Vent Damper - 10" x 16"
Our Price: $154.86
Retail: $199.99
You Save 23%!

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Aprilaire 6736 Ventilation Damper - 10" x 18"
(Aprilaire 6736)

The Aprilaire 6736 Ventilation Damper - 10" x 18" is ideal for use in residential applications. This rectangular duct damper features an exclusive Flexible Link design and installs in 4.24" slots within the duct. This Aprilaire damper features an ad

Free shipping within the continental United States!

Special Order. Ships in 17 days.
Aprilaire 6736 Ventilation Damper - 10" x 18"
Our Price: $140.16
Retail: $149.99
You Save 7%!

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Aprilaire 6737 Rectangular Vent Damper - 10" x 20"
(Aprilaire 6737)

The Aprilaire 6737 Rectangular Vent Damper - 10" x 20" is ideal for use in residential applications. This rectangular duct damper features an exclusive Flexible Link design and installs in 4.24" slots within the duct. This Aprilaire damper features

Free shipping within the continental United States!

Special Order. Ships in 9 days.
Aprilaire 6737 Rectangular Vent Damper - 10" x 20"
Our Price: $142.71
Retail: $149.99
You Save 5%!

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Aprilaire 6738 Rectangular Vent Damper - 10" x 22"
(Aprilaire 6738)

The Aprilaire 6738 Rectangular Vent Damper - 10" x 22" is ideal for use in residential applications. This rectangular duct damper features an exclusive Flexible Link design and installs in 4.24" slots within the duct. This Aprilaire damper features

Free shipping within the continental United States!

Special Order. Ships in 9 days.
Aprilaire 6738 Rectangular Vent Damper - 10" x 22"
Our Price: $170.31
Retail: $199.99
You Save 15%!

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Aprilaire 6739 - Auto Rectangular Damper 10" x 24"
(Aprilaire 6739)

The Aprilaire 6739 - Auto Rectangular Damper 10" x 24" is ideal for use in residential applications. This rectangular duct damper features an exclusive Flexible Link design and installs in 4.24" slots within the duct. This Aprilaire damper features

Free shipping within the continental United States!

Special Order. Ships in 10 days.
Aprilaire 6739 - Auto Rectangular Damper 10" x 24"
Our Price: $173.83
Retail: $199.99
You Save 13%!

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Aprilaire 4896 Door Seal for 1413 Upgrade Kit 20pk 20-Pack
(Aprilaire 4896)

The Aprilaire 4896 Door Seal for 1413 Upgrade Kit is a replacement door seal for the Aprilaire 1413 Upgrade kit, which is used with the Spacegard 2400 and Aprilaire 2400 air cleaner models. This door seal is constructed with styrofoam and is fully f


Special Order. Ships in 7 days.
Aprilaire 4896 Door Seal for 1413 Upgrade Kit 20pk
Our Price: $829.00

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Aprilaire 6724 - Rectangular Vent Damper 8"x 14"
(Aprilaire 6724)

The Aprilaire 6724 is an automatic damper of the following size: 8 inches x 14 inches The Aprilaire 6724 - Rectangular Vent Damper 8"x 14" is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This motori

Free shipping within the continental United States!

Discontinued Product Read Description.
Aprilaire 6724 - Rectangular Vent Damper 8"x 14"
Our Price: $123.60
Retail: $149.99
You Save 18%!

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Aprilaire 4081 Humidifier Water Distribution Tray
(4081)

The Aprilaire 4081 is the correct replacement for the following humidifiers: Aprilaire Model 44 Humidifier Aprilaire Model 445 Humidifier Aprilaire Model 445A Humidifier Aprilaire Model 448 Humidifier


Discontinued Product Read Description.
Aprilaire 4081 Humidifier Water Distribution Tray
Our Price: $19.99
Retail: $28.00
You Save 29%!

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Aprilaire Humidifier Float Valve Assembly 4087
(4087)

The Aprilaire Humidifier Float Valve Assembly 4087 is a humidifier float valve that fits the Aprilaire 445 Humidifier. This part features sturdy and durable construction, which results in a performance level that is long lasting and of high quality.


Discontinued Product Read Description.
Aprilaire Humidifier Float Valve Assembly 4087
Our Price: $49.99
Retail: $88.25
You Save 43%!

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Aprilaire 445 Humidifier Pump Assembly 4089
(4089)

The Aprilaire 445 Humidifier Pump Assembly 4089 is a replacement pump assembly for Aprilaire recirculating style humidifiers, specifically models 445, 445A, and 448. With this humidifier water pump assembly you will be able to have your Aprilaire hu

Free shipping within the continental United States!

Discontinued Product Read Description.
Aprilaire 445 Humidifier Pump Assembly 4089
Our Price: $149.70
Retail: $234.56
You Save 36%!

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Aprilaire Humidifier Hose and Nozzle 4091
(4091)

The Aprilaire Humidifier Hose and Nozzle 4091 is a replacement hose and nozzle for several Aprilaire humidifier models, including the 445, 445A, and 448. The water feed tube in this unit attaches to the outer side of the solenoid valve and then slid


Discontinued Product Read Description.
Aprilaire Humidifier Hose and Nozzle 4091
Our Price: $12.89
Retail: $18.99
You Save 32%!

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Aprilaire 4092 Humidifier Reservoir Divider
(4092)

The Aprilaire 4092 Humidifier Reservoir Divider is a reservoir divider that divides the reservoir of the humidifier and attaches to the bottom of the humidifier. This humidifier reservoir divider fits Aprilaire humidifier models 445, 445A, and 448.


Discontinued Product Read Description.
Aprilaire 4092 Humidifier Reservoir Divider
Our Price: $12.89
Retail: $18.99
You Save 32%!

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Aprilaire 4100 Humidifier Pump Rebuild Kit
(4100)

The Aprilaire 4100 Humidifier Pump Rebuild Kit is a pump rebuild kit for several Aprilaire humidifier models, including the 445 and the 448. This Aprilaire humidifier water pump rebuild kit includes an impeller and pump casing, but does not include


Discontinued Product Read Description.
Aprilaire 4100 Humidifier Pump Rebuild Kit
Our Price: $48.78
Retail: $54.99
You Save 11%!

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Aprilaire 4101 Humidifier Float Chamber
(4101)

The Aprilaire 4101 Humidifier Float Chamber is a replacement knob and bolt assembly for Aprilaire humidifier models 445 and 448. The knob and bolt assembly attach the reservoir to the base of your Aprilaire humidifier and keep it in place. This Apri


Discontinued Product Read Description.
Aprilaire 4101 Humidifier Float Chamber
Our Price: $11.99
Retail: $17.99
You Save 33%!

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Aprilaire 4166 Humidifier Replacement Knobs
(4166)

The Aprilaire 4166 fits the following humidifier models: Aprilaire 440 Aprilaire 445 Aprilaire 445A The Aprilaire 4166 Humidifier Replacement Knobs are replacement knobs, and attach to the front cover of the housing.


Discontinued Product Read Description.
Aprilaire 4166 Humidifier Replacement Knobs
Our Price: $9.57
Retail: $11.99
You Save 20%!

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Aprilaire 4181 Humidifier Float Chamber
(4181)

The Aprilaire 4181 Humidifier Float Chamber is a u-shaped component that encases the water panel and guides built-up mineral desposits back into the water panel.


Discontinued Product Read Description.
Aprilaire 4181 Humidifier Float Chamber
Our Price: $15.53
Retail: $23.99
You Save 35%!

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Aprilaire 560 Humidifier Water Distribution Tray
(Aprilaire 4277)

This is an Aprilaire 560 Humdifier Water Distribution Tray replacement for use with the Aprilaire 35 Water Panel Evaporator and the Aprilaire 4236 Scale Control Insert in the following Aprilaire 560 Series humidifiers: Aprilaire 560, Aprilaire 560A,


Discontinued Product Read Description.
Aprilaire 560 Humidifier Water Distribution Tray
Our Price: $14.84
Retail: $24.99
You Save 41%!

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