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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 full product list:


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 7 days.
Aprilaire 6734 Auto HVAC Damper - 10" x 14"
Our Price: $171.95
Retail: $199.99
You Save 14%!

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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 10 days.
Aprilaire 6735 Air Vent Damper - 10" x 16"
Our Price: $155.86
Retail: $199.99
You Save 22%!

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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

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Special Order. Ships in 15 days.
Aprilaire 6736 Ventilation Damper - 10" x 18"
Our Price: $141.16
Retail: $149.99
You Save 6%!

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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 7 days.
Aprilaire 6707 - Slip-in Round 7" Damper
Our Price: $79.50
Retail: $79.99
You Save 1%!

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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 8 days.
Aprilaire 6708 - Slip-In Vent Damper - 8"
Our Price: $82.61
Retail: $89.99
You Save 8%!

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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

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Special Order. Ships in 7 days.
Aprilaire 6710 - HVAC Vent Damper - 10"
Our Price: $98.17
Retail: $99.99
You Save 2%!

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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

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Special Order. Ships in 4 days.
Aprilaire 6721 Rectangular Duct Damper - 8"x 8"
Our Price: $141.07
Retail: $149.99
You Save 6%!

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Aprilaire 6614 Comfort Zone Vent Damper - 14"
(Aprilaire 6614)

The Aprilaire 6614 is a round ventilation damper of the following size: 14 inches diameter The Aprilaire 6614 Comfort Zone Vent Damper - 14" is a motorized damper with durable 24 gauge construction. This automatic vent damper features a positi

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Special Order. Ships in 3 days.
Aprilaire 6614 Comfort Zone Vent Damper - 14"
Our Price: $225.57
Retail: $249.99
You Save 10%!

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Aprilaire 6616 Motorized Damper - 16"
(Aprilaire 6616)

The Aprilaire 6616 is a round ventilation damper of the following size: 16 inches diameter The Aprilaire 6616 Motorized Damper - 16" is a motorized damper with durable 24 gauge construction. This automatic vent damper features a position indic

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Special Order. Ships in 7 days.
Aprilaire 6616 Motorized Damper - 16"
Our Price: $121.00
Retail: $129.99
You Save 7%!

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Aprilaire 6618 - 18" Automatic Ventilation Damper
(Aprilaire 6618)

The Aprilaire 6618 is a round ventilation damper of the following size: 18 inches diameter The Aprilaire 6618 - 18" Automatic Ventilation Damper is a motorized damper with durable 24 gauge construction. This automatic vent damper features a po

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Special Order. Ships in 10 days.
Aprilaire 6618 - 18" Automatic Ventilation Damper
Our Price: $203.97
Retail: $229.99
You Save 11%!

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Aprilaire 6620 - 20" Automatic Vent Damper
(Aprilaire 6620)

The Aprilaire 6620 is a round ventilation damper of the following size: 20 inches diameter The Aprilaire 6620 - 20" Automatic Vent Damper is a motorized damper with durable 24 gauge construction. This automatic vent damper features a position

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Special Order. Ships in 7 days.
Aprilaire 6620 - 20" Automatic Vent Damper
Our Price: $205.55
Retail: $229.99
You Save 11%!

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Aprilaire 6704 - 4" Automatic Slip-In Vent Damper
(Aprilaire 6704)

The Aprilaire 6704 is an automatic vent damper that is the following size: 4 inches The Aprilaire 6704 - 4" Automatic Slip-In Vent Damper is a motorized damper. This automatic damper is round in shape. This ventilation damper is a slip-in


Special Order. Ships in 8 days.
Aprilaire 6704 - 4" Automatic Slip-In Vent Damper
Our Price: $73.24
Retail: $79.99
You Save 8%!

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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 7 days.
Aprilaire 6705 - 5 Inch Round Slip-In HVAC Damper
Our Price: $74.81
Retail: $79.99
You Save 6%!

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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

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Special Order. Ships in 7 days.
Aprilaire 6738 Rectangular Vent Damper - 10" x 22"
Our Price: $171.31
Retail: $199.99
You Save 14%!

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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 8 days.
Aprilaire 6739 - Auto Rectangular Damper 10" x 24"
Our Price: $174.83
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 5 days.
Aprilaire 4896 Door Seal for 1413 Upgrade Kit 20pk
Our Price: $849.00

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Aprilaire 6504 Intelligent Zone Control Panel
(Aprilaire 6504)

The Aprilaire 6504 Intelligent Zone Control Panel works with the model 8570 thermostat to provide state-of-the-art features to control all types of HVAC equipment. The Aprilaire control panel can be used with heat/cool, heat pump, single- or multi-s

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Discontinued Product Read Description.
Aprilaire 6504 Intelligent Zone Control Panel
Our Price: $216.98
Retail: $249.99
You Save 13%!

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Aprilaire 6402 - 12-Zone Control Expansion Panel
(Aprilaire 6402)

The Aprilaire 6402 - 12-Zone Control Expansion Panel is used with the Aprilaire model 6404 control panel to expand from four to twelve zones in two zone increments. The Aprilaire control panel is fuse protected and features LED indicators for start-

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Discontinued Product Read Description.
Aprilaire 6402 - 12-Zone Control Expansion Panel
Our Price: $93.89
Retail: $99.99
You Save 6%!

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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


Discontinued Product Read Description.
Aprilaire 4093 Humidifier Reservoir Liner
Our Price: $13.99
Retail: $19.13
You Save 27%!

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