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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 4246 Humidifier Water Distribution Tray
(Aprilaire 4246)

This is an Aprilaire 760 Humdifier Water Distribution Tray replacement for use with the Aprilaire 35 Water Panel Evaporator and the Aprilaire 4236 Scale Control Insert in the following Aprilaire 760 Series humidifiers: Aprilaire 700, Aprilaire 760,


Special Order. Ships in 11 days.
Aprilaire 4246 Humidifier Water Distribution Tray
Our Price: $15.95
Retail: $19.99
You Save 20%!

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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


Special Order. Ships in 5 days.
Aprilaire 4093 Humidifier Reservoir Liner
Our Price: $12.99
Retail: $19.13
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Aprilaire 4182 Humidifier Water Distribution Tray
(4182)

The Aprilaire 4182 Humidifier Water Distribution Tray evenly distributes water to all of the evaporative panel. The Aprilaire 4182 Water Distribution Tray attaches to the u-shaped scale control insert.


Special Order. Ships in 10 days.
Aprilaire 4182 Humidifier Water Distribution Tray
Our Price: $14.07
Retail: $25.00
You Save 44%!

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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.


Special Order. Ships in 5 days.
Aprilaire 4183 Humidifier Water Distribution Tray
Our Price: $15.00
Retail: $25.00
You Save 40%!

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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.


Special Order. Ships in 5 days.
Aprilaire 4185 Humidifier Baffle Replacement
Our Price: $13.69
Retail: $22.38
You Save 39%!

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Aprilaire 4217 Humidifier Float Chamber
(4217)

The Aprilaire 4217 is a humidifier float chamber filter that works with your Aprilaire 550 and 558 model humidifiers. The Aprilaire 4217 Humidifier Float Chamber is a U-shaped component that encases the water panel inside your humidifier. This will


Special Order. Ships in 5 days.
Aprilaire 4217 Humidifier Float Chamber
Our Price: $13.10
Retail: $18.99
You Save 31%!

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Aprilaire 4236 Humidifier Float Chamber 12-Pack
(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


Special Order. Ships in 10 days.
Aprilaire 4236 Humidifier Float Chamber
Our Price: $131.40

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Aprilaire 4238 Humidifier Circuit Board
(4238)

The Aprilaire 4238 Humidifier Circuit board is a circuit board replacement for your whole- house, fan powered humidifier. This circuit board will keep your Aprilaire whole-house humidifier working at its best


Special Order. Ships in 11 days.
Aprilaire 4238 Humidifier Circuit Board
Our Price: $51.95
Retail: $56.99
You Save 9%!

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Aprilaire 700 Series Humidifier Cabinet Base
(Aprilaire 4245)

The Aprilaire 700 Series Humidifier Cabinet Base is also known as Aprilaire 4245.


Special Order. Ships in 9 days.
Aprilaire 700 Series Humidifier Cabinet Base
Our Price: $72.99
Retail: $99.99
You Save 27%!

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Aprilaire 4005 Water Solenoid Valve Assembly
(4005)

The Aprilaire 4005 is the correct replacement for the following humidifiers: Aprilaire Model 110 Humidifier Aprilaire Model 112 Humidifier


Special Order. Ships in 11 days.
Aprilaire 4005 Water Solenoid Valve Assembly
Our Price: $59.95
Retail: $69.99
You Save 14%!

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Aprilaire 4007 Humidifier Orifice White 12-Pack
(4007)

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


Special Order. Ships in 7 days.
Aprilaire 4007 Humidifier Orifice White
Our Price: $23.88

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Aprilaire 4010 Humidifier Transformer Replacement
(4010)

The Aprilaire 4010 is the correct replacement for the following humidifiers:Aprilaire 400, 550, 550A, 558, 560, 560A, 568 and 600 Humidifier; Honeywell HE220, HE225, HE260 and HE265 Humidifier.


Special Order. Ships in 11 days.
Aprilaire 4010 Humidifier Transformer Replacement
Our Price: $13.95
Retail: $15.99
You Save 13%!

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Aprilaire 4021 Humidifier Orifice Red
(4021)

The Aprilaire 4021 is the correct replacement for the following humidifiers: Aprilaire Model 112 Humidifier Aprilaire Model 224 Humidifier


Special Order. Ships in 5 days.
Aprilaire 4021 Humidifier Orifice Red
Our Price: $6.75
Retail: $9.99
You Save 32%!

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Aprilaire 4031 Humidifier Cork Motor Isolator 6-Pack
(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


Special Order. Ships in 9 days.
Aprilaire 4031 Humidifier Cork Motor Isolator
Our Price: $47.94

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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


Discontinued Product Read Description.
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.


Discontinued Product Read Description.
Aprilaire Humidifier Float Valve Assembly 4087
Our Price: $49.99
Retail: $88.25
You Save 43%!

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Aprilaire 445 Humidifier Pump Assembly 4089
(4089)

The Aprilaire 445 Humidifier Pump Assembly 4089 is a replacement pump assembly for Aprilaire recirculating style humidifiers, specifically models 445, 445A, and 448. With this humidifier water pump assembly you will be able to have your Aprilaire hu

Free shipping within the continental United States!

Discontinued Product Read Description.
Aprilaire 445 Humidifier Pump Assembly 4089
Our Price: $149.70
Retail: $234.56
You Save 36%!

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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


Discontinued Product Read Description.
Aprilaire Humidifier Hose and Nozzle 4091
Our Price: $12.89
Retail: $18.99
You Save 32%!

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Aprilaire 4092 Humidifier Reservoir Divider
(4092)

The Aprilaire 4092 Humidifier Reservoir Divider is a reservoir divider that divides the reservoir of the humidifier and attaches to the bottom of the humidifier. This humidifier reservoir divider fits Aprilaire humidifier models 445, 445A, and 448.


Discontinued Product Read Description.
Aprilaire 4092 Humidifier Reservoir Divider
Our Price: $12.89
Retail: $18.99
You Save 32%!

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Aprilaire 104 Replacement Filter - Aprilaire 2140
(Aprilaire 104)

The Aprilaire 104 Replacement Filter is a genuine replacement media for the Aprilaire 2140 Air Cleaner.


Discontinued Product Read Description.
Aprilaire 104 Replacement Filter - Aprilaire 2140
Our Price: $34.99
Retail: $39.99
You Save 13%!

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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


Discontinued Product Read Description.
Aprilaire 4100 Humidifier Pump Rebuild Kit
Our Price: $48.78
Retail: $54.99
You Save 11%!

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Aprilaire 4101 Humidifier Float Chamber
(4101)

The Aprilaire 4101 Humidifier Float Chamber is a replacement knob and bolt assembly for Aprilaire humidifier models 445 and 448. The knob and bolt assembly attach the reservoir to the base of your Aprilaire humidifier and keep it in place. This Apri


Discontinued Product Read Description.
Aprilaire 4101 Humidifier Float Chamber
Our Price: $11.99
Retail: $17.99
You Save 33%!

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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


Discontinued Product Read Description.
Aprilaire 4148 Humidifier Impellor
Our Price: $10.94
Retail: $15.94
You Save 31%!

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Aprilaire 4166 Humidifier Replacement Knobs
(4166)

The Aprilaire 4166 fits the following humidifier models: Aprilaire 440 Aprilaire 445 Aprilaire 445A The Aprilaire 4166 Humidifier Replacement Knobs are replacement knobs, and attach to the front cover of the housing.


Discontinued Product Read Description.
Aprilaire 4166 Humidifier Replacement Knobs
Our Price: $9.57
Retail: $11.99
You Save 20%!

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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.


Discontinued Product Read Description.
Aprilaire 4181 Humidifier Float Chamber
Our Price: $15.53
Retail: $23.99
You Save 35%!

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