An Aprilaire humidifier control is a device designed to regulate and maintain optimal humidity levels in your home. AprilAire Humidifiers are a line of whole-home humidifiers that work with a home's HVAC system to add moisture to dry indoor air. AprilAire offers a range of humidifiers to fit different-sized homes and different humidity needs. Its humidifiers work by drawing dry air in... https://www.partshnc.com/m/aprilaire/aprilaire-humidifier-parts