A central air conditioning system is a cooling system that uses a network of ducts to distribute cool air throughout a building. It typically consists of an outdoor unit, which contains the compressor and condenser, and an indoor unit, which houses the evaporator coil. This system is designed to maintain a consistent temperature and humidity level in multiple rooms or areas. These systems are often more efficient than individual room air conditioners because they can cool larger spaces more evenly. Central air conditioning systems can also improve indoor air quality by filtering out dust and allergens, making them a popular choice for homes and commercial buildings.