The answer to 'what does central air do' is that central air conditioning is a type of HVAC (heating, ventilation, and air conditioning) system that cools and dehumidifies the air throughout an entire home or building. Central air uses a compressor, refrigerant, and a network of ducts to circulate cool, conditioned air to every room. This allows for even, consistent temperature control and comfort throughout the living space.
Central air systems work by using a refrigerant to absorb heat from the indoor air, then expelling that heat outside. This cooling process also removes excess moisture from the air, helping to maintain a comfortable humidity level. The cooled air is then distributed through the ductwork and into each room, providing whole-home climate control.