The Honeywell HE420A1009, 120v 1500 watt. Includes the stainless steel humidifier assembly, automatic flushing timer, automatic humidistat, water filter, saddle valve, fan control relay, blower safety switch, and mounting frame.
Steam humidifiers provide the most precise humidity control. The steam humidifiers do not require hot air as with the evaporative models that wait for the furnace to run. When the humidistat detects the need for humidity, the steam humidifier is turned on. The steam humidifier has a thermal bimetallic switch that is wired to turn on the furnace blower. When the humidifier is at a steam producing temperature the bimetallic switch closes and turns on the blower.