An air diffuser HVAC is a device used to evenly distribute air throughout a room or building. It works by taking in air from a central source, such as an air conditioning unit, and dispersing it throughout the space. This is done by using a fan to blow the air through a series of ducts and vents. The air is then diffused, or spread out, through the room or building. This helps to create a comfortable environment, as the air is evenly distributed. Air diffusers are also used to control the temperature and humidity levels in a space. By controlling the air flow, the temperature and humidity can be adjusted to meet the needs of the occupants. Air diffusers are an important part of any HVAC system, as they help to ensure a comfortable and healthy environment.