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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 4640 Humidifier Scale Control Insert 10-Pack
(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 9 days.
Aprilaire 4640 Humidifier Scale Control Insert
Our Price: $124.20

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Aprilaire 4079 Humidifier Feed Tube and Nozzle
(Aprilaire 4079)

The Aprilaire 4079 Humidifier Feed Tube and Nozzle is the replacement component for Aprilaire humidifier system model numbers 440, 350 and 360. Allows for a flow rate of 6 GPH.


Special Order. Ships in 10 days.
Aprilaire 4079 Humidifier Feed Tube and Nozzle
Our Price: $7.99
Retail: $14.33
You Save 44%!

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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 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

Free shipping within the continental United States!

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 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

Free shipping within the continental United States!

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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Special Order. Ships in 5 days.
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

Free shipping within the continental United States!

Special Order. Ships in 7 days.
Aprilaire 6610 - 10" Zone Control Vent Damper
Our Price: $104.99
Retail: $109.99
You Save 5%!

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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

Free shipping within the continental United States!

Special Order. Ships in 10 days.
Aprilaire 6612 Automatic Ventilation Damper - 12"
Our Price: $112.00
Retail: $149.99
You Save 25%!

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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

Free shipping within the continental United States!

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 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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