AprilAire 4640 Humidifier Scale Control Insert
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AprilAire 4640 Humidifier Scale Control Insert 10-Pack

4640

$199.90
Only $19.99 per Insert
Retail: $24.99 /ea
You Save: 20%
As low as
$199.90
Retail: $24.99
You Save: 20%
This item has been discontinued. Please review the product description for more information.

The AprilAire 4640 is the correct replacement for the following humidifiers:

  • AprilAire 500
  • AprilAire 500A
  • AprilAire 500M

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.

The AprilAire 4640 Specifications:

  • Contains 1 humidifier scale control insert
  • Works with your 500 series model humidifier
  • Item Weight: 4.8 ounces

The AprilAire humidifier scale control will direct mineral build up back into your humidifiers evaporative pad, keeping it out of your clean, humidified air. This humidifier scale control is a key feature to keeping your AprilAire 500 series model humidifier working at peak performance.


Customer Reviews:

Total Reviews: 25 Average Rating: 4.7 / 5.0

Filtersfast Reviews on Trust Pilot external site
Erik Anderson2024-03-21

They don't last long enough.

Collected by Trustpilot.com
Phyllis Elliott2024-03-07

Great and good

Collected by Trustpilot.com
Joann Kitowski2023-06-07

I ordered for net winter season I did purchase 2 boxes csi I’ll be set for the winter. I have no used them yet so I can’t rate the items. But they should do good. I will keep your company on my list when I need more

Collected by Trustpilot.com
Susan Kelly2023-04-01

Absolutely great!

Collected by Trustpilot.com
Dianna Thompson2023-03-10

Great product fits humidifier wonderfully

Collected by Trustpilot.com
Steve Dewell2023-01-06

I bought to have them as spare filters for when I needed them. I haven't actually installed them yet. But they look like they will work as good as the originals.

Collected by Trustpilot.com
Jeffrey Lawrence2023-01-02

Happy with this product, been using for years in our humidifier. Fits well and does its job.

Collected by Trustpilot.com
Jill Minoughan2022-12-18

Been using these for years. For a product that gets replaced monthly they’re great.

Collected by Trustpilot.com
KH2022-08-20

They are perfect for our humidifier.

Collected by Trustpilot.com
Mabel Flowers2022-03-25

This humidifier wick fits my humidifier.

Collected by Trustpilot.com
DAVID A. STUCKMAN2022-03-13

Great service

Collected by Trustpilot.com
Ronald Johnson2022-03-03

The Fit was foremost !!!!

Collected by Trustpilot.com
customer2022-02-20

My humidifier is older model. Hard to find filters for it.

Collected by Trustpilot.com
Christopher Lambert2022-02-11

Didn’t receive my second order that I placed

Collected by Trustpilot.com
larry newman2022-01-09

The only real problem is the PRICE// The same product at two other big box stores, is much less.

Collected by Trustpilot.com
Robert Carnes2021-12-31

works as should

Collected by Trustpilot.com
Bill H2021-12-12

Quick easy to order, almost always has whats needed.

Collected by Trustpilot.com
Jeffrey Lawrence2021-11-27

The filter's work and fit well in my humidifier.

Collected by Trustpilot.com
Nancy2021-11-04

It was easy to order just what I needed and it came right to my door.

Collected by Trustpilot.com
customer2021-11-02

They seem to be working ok.

Collected by Trustpilot.com


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