Abstract: An apparatus is set forth for humidification of a dwelling wherein a transparent housing includes a valve operative through a solenoid with a flexible input water line directed into the valve and a flexible output line directed from the valve to a spray head. The valve is associated with a humidistat to effect operation of the valve to inject water vapor into a stream of air directed within a central duct work of a furnace arrangement. The spray head includes a horizontal and vertical pivot mount in association with the water input line to enable selective positioning of the nozzle at a desired rotation relative to the air stream within the duct work. Modifications of the instant invention include removable and selectively cleansable sponge coverings for the spray nozzle head.