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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 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

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Aprilaire 6212 - 12" Duct Static Bypass
Our Price: $322.59
Retail: $378.99
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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

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Aprilaire 6214 - 14" Duct Static Bypass
Our Price: $331.02
Retail: $388.99
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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

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Aprilaire 6216 16" Duct Static Bypass
Our Price: $368.97
Retail: $432.99
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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

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Aprilaire 6218 18" Duct Static Bypass
Our Price: $372.48
Retail: $437.99
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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

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Aprilaire 6220 20" Duct Static Bypass
Our Price: $433.62
Retail: $508.99
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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

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Aprilaire 8081 Temperature Sensor Module
Our Price: $91.95
Retail: $106.99
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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

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Aprilaire 6404 - Zone Comfort Control Panel
Our Price: $229.95
Retail: $299.99
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Aprilaire 6506 - 6" Automatic Vent Damper
(Aprilaire 6506)

The Aprilaire 6506 - 6" Automatic Vent Damper measures 6 inches in diameter and works well with either rigid metal or flex duct. The Aprilaire closed damper features adjustable blade positioning and an integrated foam seal for flexibility with any z


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Aprilaire 6506 - 6" Automatic Vent Damper
Our Price: $81.00
Retail: $94.99
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Aprilaire 6508 Automatic Damper - 8"
(Aprilaire 6508)

The Aprilaire 6508 Automatic Damper - 8" measures 8 inches in diameter and works well with either rigid metal or flex duct. The Aprilaire closed damper features adjustable blade positioning and an integrated foam seal for flexibility with any zone j

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Aprilaire 6508 Automatic Damper - 8"
Our Price: $106.02
Retail: $129.99
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Aprilaire 6606 Motorized Damper - 6"
(Aprilaire 6606)

The Aprilaire 6606 Motorized Damper - 6" measures 6 inches in diameter and works well with either rigid metal or flex duct. The Aprilaire closed damper features adjustable blade positioning and an integrated foam seal for flexibility with any zone j

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Aprilaire 6606 Motorized Damper - 6"
Our Price: $92.73
Retail: $107.99
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Aprilaire 6607 - 7" Automatic Vent Damper
(Aprilaire 6607)

The Aprilaire 6607 - 7" Automatic Vent Damper measures 7 inches in diameter and works well with either rigid metal or flex duct. The Aprilaire closed damper features adjustable blade positioning and an integrated foam seal for flexibility with any z

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Aprilaire 6607 - 7" Automatic Vent Damper
Our Price: $88.00
Retail: $102.99
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Aprilaire 6608 Auto Motorized Vent Damper - 8"
(Aprilaire 6608)

The Aprilaire 6608 Auto Motorized Vent Damper - 8" measures 8 inches in diameter and works well with either rigid metal or flex duct. The Aprilaire closed damper features adjustable blade positioning and an integrated foam seal for flexibility with

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Special Order. Ships in 9 days.
Aprilaire 6608 Auto Motorized Vent Damper - 8"
Our Price: $90.95
Retail: $105.99
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Aprilaire 6609 - Zone Control 9" Vent Damper
(Aprilaire 6609)

The Aprilaire 6609 - Zone Control 9" Vent Damper measures 9 inches in diameter and works well with either rigid metal or flex duct. The Aprilaire closed damper features adjustable blade positioning and an integrated foam seal for flexibility with an

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Aprilaire 6609 - Zone Control 9" Vent Damper
Our Price: $90.95
Retail: $105.99
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Aprilaire 6612 Automatic Ventilation Damper - 12"
(Aprilaire 6612)

The Aprilaire 6612 is a round ventilation damper of the following size: 12 inches diameter The Aprilaire 6612 Automatic Ventilation Damper - 12" is a motorized damper with durable 24 gauge construction. This automatic vent damper features a po

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Aprilaire 6612 Automatic Ventilation Damper - 12"
Our Price: $106.95
Retail: $149.99
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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 11 days.
Aprilaire 6616 Motorized Damper - 16"
Our Price: $122.00
Retail: $142.99
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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 12 days.
Aprilaire 6618 - 18" Automatic Ventilation Damper
Our Price: $204.97
Retail: $239.99
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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 9 days.
Aprilaire 6620 - 20" Automatic Vent Damper
Our Price: $206.55
Retail: $241.99
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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 10 days.
Aprilaire 6704 - 4" Automatic Slip-In Vent Damper
Our Price: $74.24
Retail: $86.99
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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


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Aprilaire 6706 - 6" Round Damper - Slip-In
Our Price: $69.95
Retail: $81.99
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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 14 days.
Aprilaire 6707 - Slip-in Round 7" Damper
Our Price: $80.50
Retail: $93.99
You Save 14%!

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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: $83.61
Retail: $97.99
You Save 15%!

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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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Aprilaire 6710 - HVAC Vent Damper - 10"
Our Price: $99.17
Retail: $115.99
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Aprilaire 6723 Rectangular Damper 8"x 12"
(Aprilaire 6723)

The Aprilaire 6723 is an automatic damper of the following size: 8 inches x 12 inches The Rectangular Damper 8"x 12" - Aprilaire 6723 is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This motorized d

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Aprilaire 6723 Rectangular Damper 8"x 12"
Our Price: $141.00
Retail: $189.99
You Save 26%!

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Aprilaire 6725 - Rectangular Damper 8" x 16"
(Aprilaire 6725)

The Aprilaire 6725 is an automatic damper of the following size: 8 inches x 16 inches The Aprilaire 6725 - Rectangular Damper 8" x 16" is a rectangular duct damper. This ventilation damper is motorized for zone control systems. This motorized

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Special Order. Ships in 12 days.
Aprilaire 6725 - Rectangular Damper  8" x 16"
Our Price: $127.00
Retail: $149.99
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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

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Special Order. Ships in 11 days.
Aprilaire 6726 HVAC Rectangular Damper - 8"x 18"
Our Price: $153.34
Retail: $199.99
You Save 23%!

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