Is Grilles and Registers the Same?

In simple terms, an air register is the same as a grille, but with adjustable dampers in it. Unlike grilles, which can be for both intake and release of air in a room, a register only serves the latter. An air register usually is used with air supply outlets feeding air into indoor spaces.

What is the difference between registers and grilles?

Heat registers are vent covers that cover the hole in the wall or floor where the duct enters the room. Louvres, or dampers, are often attached to the back of a heat register. ... A grille has no damper to control air flow, so air is left to flow freely. Grilles do not have the damper normally found on registers.

What is a grille diffuser or register?

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.