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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 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


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Aprilaire 56 Duct Mount Humidistat Control
Our Price: $68.10
Retail: $182.74
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Aprilaire 4403 Humidifier Float Chamber
(4403)

The Aprilaire 4403 Humidifier Float Chamber is a float chamber for Aprilaire 400 model humidifiers. This float chamber is a U-shaped component that encases the water panel of the humidifier and directs any built-up mineral deposits back into the wat


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Aprilaire 4403 Humidifier Float Chamber
Our Price: $36.95
Retail: $39.95
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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: $89.95
Retail: $99.99
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Aprilaire EZ Kleen Filter Replacement 2-Pack
(5153)

The Aprilaire 5153 fits the following model ventilator: 8100 Energy Recovery Ventilator Aprilaire EZ Kleen Filter Replacement 2-Pack is a washable replacement filter.


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Aprilaire EZ Kleen Filter Replacement 2-Pack
Our Price: $40.99
Retail: $49.99
You Save 18%!

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Aprilaire 4185 Humidifier Baffle Replacement
(4185)

The Aprilaire 4185 Humidifier Baffle Replacement attaches to the inside of the humidifier's housing and holds the water feed nozzle in place.


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Aprilaire 4185 Humidifier Baffle Replacement
Our Price: $13.69
Retail: $22.38
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Aprilaire 4183 Humidifier Water Distribution Tray
(4183)

The Aprilaire 4183 Humidifier Water Distribution Tray Cover is a plastic cover that fits into the top of the humidifier water distribution tray. This water tray cover weighs 2.4 ounces.


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Aprilaire 4183 Humidifier Water Distribution Tray
Our Price: $15.00
Retail: $25.00
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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.


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Aprilaire 4181 Humidifier Float Chamber
Our Price: $15.53
Retail: $23.99
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Aprilaire 4217 Humidifier Scale Control Insert
(Aprilaire 4217)

This is an Aprilaire 4217 Humidifier Scale Control Insert replacement for use with the Aprilaire 500 Humidifier Water Panel Evaporator (Aprilaire 10) and the Aprilaire 4218 Humidifier Water Distribution Tray in the following Aprilaire humidifiers: A


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Aprilaire 4217 Humidifier Scale Control Insert
Our Price: $18.95
Retail: $24.99
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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


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Aprilaire 400 Humidifier Float Cover 4405
Our Price: $17.30
Retail: $19.95
You Save 13%!

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Aprilaire 51 Furnace Current Sensing Relay
(Aprilaire 51)

The Aprilaire 51 is the correct replacement for the following humidifiers:Aprilaire Humidifiers Honeywell HE220, HE225, HE260, HE265, HE360 and HE365 Humidifiers


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Aprilaire 51 Furnace Current Sensing Relay
Our Price: $39.99
Retail: $64.70
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Aprilaire 4640 Humidifier Scale Control Insert
(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.


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Aprilaire 4640 Humidifier Scale Control Insert
Our Price: $11.42
Retail: $19.99
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Aprilaire 4851 Humidifier Blower Activation Relay
(4851)

The Aprilaire 4851 is the correct replacement for the following humidifiers: Aprilaire 500 Series Humidifiers Aprilaire 600 Series Humidifiers Aprilaire 700 Series Humidifiers


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Aprilaire 4851 Humidifier Blower Activation Relay
Our Price: $23.00
Retail: $44.99
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Aprilaire 4670 Powered Humidifier Motor
(4670)

The Aprilaire 4670 is the correct replacement for the following humidifiers: Aprilaire Model 700A Humidifier Aprilaire Model 700M Humidifier

Free shipping within the continental United States!

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Aprilaire 4670 Powered Humidifier Motor
Our Price: $142.57
Retail: $149.99
You Save 5%!

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Aprilaire 4407 Humidifier Water Distribution Tray
(4407)

The Aprilaire 4407 is the correct replacement for the following humidifiers: April Model 400 Humidifier


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Aprilaire 4407 Humidifier Water Distribution Tray
Our Price: $19.95
Retail: $24.99
You Save 20%!

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Aprilaire 4236 Humidifier Float Chamber
(4236)

The Aprilaire 4236 is a humidifier float chamber filter that works with your select Aprilaire humidifier. The 4236 is a U-shaped component that encases the water panel inside your humidifier. This will direct any mineral deposit build up back into y


In Stock! Ships in 3 to 4 business days.
Aprilaire 4236 Humidifier Float Chamber
Our Price: $10.95
Retail: $15.99
You Save 32%!

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Aprilaire 4038 Humidifier Drain Spud Kit-110 & 112
(Aprilaire 4038)

The Aprilaire 4038 Humidifier Drain Spud Kit is a humidifier component replacement kit used in the following Aprilaire humidifier models: Aprilaire 110 humidifier, Aprilaire 112 humidifier, Aprilaire 220 humidifier, Aprilaire 224 humidifier, and the


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Aprilaire 4038 Humidifier Drain Spud Kit-110 & 112
Our Price: $4.00
Retail: $4.99
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Aprilaire 4223 Humidifier Drain Spud Kit
(Aprilaire 4223)

The Aprilaire 4223 Humidifier Drain Spud Kit is a humidifier component replacement kit used in all Aprilaire 500 Series and Aprilaire 600 Series humidifiers including the Aprilaire 500 Humidifier, Aprilaire 550 Humidifier, Aprilaire 550A humidifier,


In Stock! Ships in 3 to 4 business days.
Aprilaire 4223 Humidifier Drain Spud Kit
Our Price: $4.25
Retail: $4.99
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Aprilaire 4148 Humidifier Impellor
(4148)

The Aprilaire 4148 Humidifier Impellor is the small propeller that sits in the reservoir, driving water up the feed tube to the unit's water distribution tray, where humidity is created when the water flows over the Water Panel evaporator


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Aprilaire 4148 Humidifier Impellor
Our Price: $10.94
Retail: $15.94
You Save 31%!

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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


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Aprilaire Humidifier Hose and Nozzle 4091
Our Price: $12.89
Retail: $18.99
You Save 32%!

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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


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Aprilaire 4093 Humidifier Reservoir Liner
Our Price: $12.99
Retail: $19.13
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


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Aprilaire 4100 Humidifier Pump Rebuild Kit
Our Price: $48.78
Retail: $54.99
You Save 11%!

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Aprilaire 4031 Humidifier Cork Motor Isolator
(4031)

The Aprilaire 4031 is the correct replacement for the following humidifiers: Aprilaire Model 700 Humidifier Aprilaire Model 700 Humidifier Aprilaire Model 700M Humidifier Aprilaire Model 760 Humidifier Aprilaire Model 760A Humidifier


In Stock! Ships in 3 to 4 business days.
Aprilaire 4031 Humidifier Cork Motor Isolator
Our Price: $7.99
Retail: $13.99
You Save 43%!

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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


Out of stock
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.


Out of stock
Aprilaire Humidifier Float Valve Assembly 4087
Our Price: $49.99
Retail: $88.25
You Save 43%!

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Aprilaire 4007 Humidifier Orifice White
(4007)

The Aprilaire 4007 is the correct replacement for the following humidifiers: Aprilaire Model 110 Humidifier Aprilaire Model 220 Humidifier


In Stock! Ships in 3 to 4 business days.
Aprilaire 4007 Humidifier Orifice White
Our Price: $1.99
Retail: $6.73
You Save 70%!

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