A linear diffuser is an elongated air distribution outlet featuring multiple parallel slots that discharge conditioned air in a uniform, unidirectional pattern. These diffusers are installed in ceilings, walls, or floors and span 1 to 20 feet in length. Linear diffusers distribute air more evenly than traditional round outlets, improving comfort and reducing draft sensations.
Design and Performance
Linear diffusers feature adjustable blade dampers allowing individual airflow control for each section. They produce throw distances of 4 to 15 feet depending on velocity and mounting height. Curved linear diffusers direct air along ceiling surfaces to minimize draft complaints in spaces with high occupancy.
Applications and Aesthetic Benefits
Linear diffusers integrate seamlessly into modern architectural designs and work well in retail spaces, offices, and residential applications. They facilitate zone control in open-plan layouts and reduce visible ductwork. Proper sizing prevents velocity noise, typically limited to 400 to 800 feet per minute for occupied spaces.