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The Aprilaire 4080 is a scale control insert for Aprilaire whole-house humidifiers. The U-shaped frosted plastic tray holds the humidifier water panel and prevents scale buildup inside the humidifier cabinet. It functions as a direct replacement for the original factory insert and is intended to maintain humidifier performance by reducing mineral accumulation. The insert is specified for use with compatible Aprilaire models listed below.
Replacement U-shaped scale control insert for Aprilaire models 440/445/445a/448; frosted plastic construction; prevents scale buildup.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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