Air Conditioning Grill

Air Conditioner Grills. The purpose of the air conditioner grill is to diffuse the air from the ductwork. It directs the flow of air out of ducts or into the return air vent. Grills tend to be adjustable, so airflow in specific rooms can be restricted or even shut off entirely.Grilles – Remove air from an indoor space and return it to the HVAC system for reconditioning. Registers – Supply conditioned air into an indoor environment. Diffusers – Push conditioned air into a space in a set pattern for optimal airflow distribution.