AC components refer to the essential parts of an air conditioning system that work together to cool indoor spaces. The main components include the compressor, which circulates refrigerant; the evaporator coil, where the refrigerant absorbs heat; and the condenser coil, which releases heat outside. Additionally, the expansion valve regulates the flow of refrigerant, while the fan helps distribute cool air throughout the area. Each component plays a crucial role in maintaining a comfortable temperature and ensuring the system operates efficiently. Understanding these parts can help in troubleshooting and maintaining an AC system.