A humidifier has a continuous water flow system with total water recovery and no loss, for maximum efficiency. The unit has a fan with a motor, a transformer, and a circuit hoard, a water tank, and a hood that directs the water vapor into a duct system of a residence. The unit uses multiple ultrasonic transducers positioned at the bottom of a water chamber that transform electrical energy into mechanical energy through vibration. The vibration excites the water molecules separating them into particles having a diameter of about 10 microns for circulation through a home.