Keep your Aprilaire 350 or 360 Whole-House Humidifier running at peak performance with the Aprilaire 4785 Maintenance Kit. This genuine OEM kit includes everything you need for a complete annual refresh—helping to maintain ideal humidity levels in your home, reduce scale buildup, and extend the life of your system. Each component is precision-engineered to fit Aprilaire humidifiers and ensure reliable operation throughout the heating season.

Whether you're replacing worn-out parts or preparing for winter, this all-in-one kit simplifies routine maintenance and ensures your humidifier delivers clean, consistent moisture.