What is a diffuser in relation to a heating and cooling system?

A diffuser in a heating and cooling system is a device that helps distribute conditioned air throughout a space. It typically consists of a grille or vent that allows air to flow in a controlled manner, promoting even temperature distribution and enhancing comfort. Diffusers can be adjustable, allowing users to direct airflow to specific areas, and they play a crucial role in maintaining indoor air quality by ensuring proper ventilation.