The definition of a louvers HVACHVAC system is a type of air conditioning system that uses a series of adjustable metal blades to regulate the amount of air entering a room. Louvers are usually found in the form of a grille or vent, and are used to control the amount of air that is allowed to enter or exit a room. The blades of the louvers can be adjusted to allow more or less air to enter the room, and can be used to control the temperature, humidity, and air flow in the room. Louvers are often used in commercial and industrial buildings, as they provide a more efficient way to regulate the temperature and air flow in the room. They are also commonly used in residential homes, as they provide a cost-effective way to regulate the air flow in the home. Louvers are an important part of any HVAC system, as they provide an efficient way to regulate the temperature and air flow in the room.