Inffusers increase the amount of air being delivered to the room through induction of secondary air into the Inffuser where it mixes with the supply air before being discharged into the room. Inffusers can be used in both constant volume and variable air volume systems.

With indirect induction (external entrainment) models the primary air (1) is introduced into the Inffuser through a series of nozzles (2). This induces plenum return air (3) into the Inffuser where it mixes with the supply air. The mixed tempered air (4) is then discharged into the room.

With direct induction (internal entrainment) models the primary air (1) is introduced into the Inffuser through a series of nozzles (2). This induces room air (3) up into the Inffuser where it mixes with the supply air. The mixed tempered air (4) is then discharged into the room.

In both cases the supply air is tempered by the induced air before the mixed air is discharged into the room.