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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 56 Duct Mount Humidistat Control
(Aprilaire 56)

The Aprilaire 56 Duct Mount Humidistat Control is a duct mounted AutoTrac electronic humidistat. This Aprilaire humidifier humidistat includes an outdoor air sensor. Can be used with any humidifier that has a 24 volt AC control system. This Aprilair


Special Order. Ships in 9 days.
Aprilaire 56 Duct Mount Humidistat Control
Our Price: $69.10
Retail: $182.74
You Save 62%!

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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 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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Special Order. Ships in 7 days.
Aprilaire 6220 20" Duct Static Bypass
Our Price: $432.62
Retail: $449.99
You Save 4%!

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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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Special Order. Ships in 10 days.
Aprilaire 8081 Temperature Sensor Module
Our Price: $90.95
Retail: $99.99
You Save 9%!

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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

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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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Aprilaire 6210 - 10" Duct Static Bypass
(Aprilaire 6210)

The 10" Duct Static Bypass - Aprilaire 6210 is a static pressure bypass damper with a round shape. The Aprilaire static bypass measures 10 inches in diameter and provides a heightened level of control for your zoning applications. This 10" static by

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Special Order. Ships in 7 days.
Aprilaire 6210 - 10" Duct Static Bypass
Our Price: $318.75
Retail: $329.99
You Save 3%!

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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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Special Order. Ships in 7 days.
Aprilaire 6212 - 12" Duct Static Bypass
Our Price: $321.59
Retail: $329.99
You Save 3%!

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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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Special Order. Ships in 7 days.
Aprilaire 6214 - 14" Duct Static Bypass
Our Price: $330.02

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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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Special Order. Ships in 7 days.
Aprilaire 6216 16" Duct Static Bypass
Our Price: $367.97
Retail: $399.90
You Save 8%!

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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: $230.99
Retail: $299.99
You Save 23%!

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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


Special Order. Ships in 9 days.
Aprilaire 6506 - 6" Automatic Vent Damper
Our Price: $80.00

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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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Special Order. Ships in 7 days.
Aprilaire 6508 Automatic Damper - 8"
Our Price: $105.02
Retail: $129.99
You Save 19%!

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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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Special Order. Ships in 9 days.
Aprilaire 6606 Motorized Damper - 6"
Our Price: $91.73
Retail: $99.99
You Save 8%!

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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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Special Order. Ships in 7 days.
Aprilaire 6607 - 7" Automatic Vent Damper
Our Price: $87.00
Retail: $89.99
You Save 3%!

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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 7 days.
Aprilaire 6608 Auto Motorized Vent Damper - 8"
Our Price: $95.24
Retail: $99.99
You Save 5%!

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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: $89.89
Retail: $89.99
You Save 0%!

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Aprilaire 6610 - 10" Zone Control Vent Damper
(Aprilaire 6610)

The Aprilaire 6610 is a round ventilation damper of the following size: 10 inches diameter The Aprilaire 6610 - 10" Zone Control Vent Damper is a motorized damper with durable 24 gauge construction. This automatic vent damper features a positi

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Aprilaire 6610 - 10" Zone Control Vent Damper
Our Price: $104.99
Retail: $109.99
You Save 5%!

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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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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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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


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Aprilaire 6705 - 5 Inch Round Slip-In HVAC Damper
Our Price: $74.81
Retail: $79.99
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


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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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