Central air is a common phrase used to describe a heating and cooling system that is centralized and distributes air throughout a building. However, there are a variety of synonyms that can be used to describe this type of system. Some alternatives include HVAC (heating, ventilation, and air conditioning), central heating and cooling, forced air system, and ducted air conditioning. Other terms that may be used include whole-house air conditioning, climate control system, and central air conditioning unit. Regardless of the terminology used, the goal of a central air system is to provide a consistent and comfortable temperature throughout a building, helping to improve air quality and create a pleasant indoor environment.