Air Terminal Unit (ATU) is a central device used in air conditioning systems to deliver cooled or heated air to an indoor space. It is made up of heating and coolcooling coils, a fan, dampers and other necessary components. An ATU typically acts as the brain of your overall air conditioning system, controlling the temperature distribution and ensuring comfort for the occupants of your building or home. ATUs also have other important roles such as noise suppression and air filtration. By understanding the key features and functions of an ATU, you can better understand what they are and why they’re necessary for your business’s indoor climate needs.