Aprilaire 4640 Humidifier Scale Control Insert 10-Pack

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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: 3 | Average Rating: 4.3 / 5.0

Anonymous2021-04-02

This is a great product .

Collected by Trustpilot.com

Anonymous2021-01-06

Very expensive

Collected by Trustpilot.com

Anonymous2020-12-28

The best price and high quality make this a no-brainer!

Collected by Trustpilot.com