AprilAire Model 300 Self-Contained for up to 3,900 sq. ft. Whole-House Evaporative Humidifier

Improve the air quality in your home with this evaporative humidifier. Made for homes up to 3,900 sq. ft., it provides optimal relative humidity to balance out the dry air in colder climate regions. The evaporative process passes hot, dry air from your furnace over the inner water panel to add moisture before returning the humidified air into your home with the built-in fan. You can set the digital humidistat to set your target humidity level. The onboard sensor monitors your home's air, automatically turning on and off the unit as needed.