What is an induction unit?

Primary supply air from the central system air handling units (1) is introduced into the induction unit through a series of nozzles (2). This induces room air (3) into the induction unit and in turn through a secondary water coil (4). Induced room air is cooled and/or heated by the water coil to the extent needed to control the room temperature. Induced room air is then mixed with the primary supply air and the mixed air (5) is discharged into the room.