AC service, or air conditioning service, involves the maintenance and repair of air conditioning systems to ensure their optimal performance. This includes tasks such as cleaning or replacing air filters, checking and refilling refrigerant levels, inspecting and lubricating components, and addressing issues with the thermostat or electrical connections. Regular AC service helps improve energy efficiency, extends the lifespan of the system, and ensures that it operates effectively in cooling or heating the indoor environment. Professional technicians typically conduct AC service to identify and fix potential problems, preventing breakdowns and enhancing the overall comfort and air quality in homes or commercial spaces.