The answer to 'when to service ductless system' is that ductless HVAC systems should be serviced annually, or more frequently if the system is heavily used. Regular maintenance is essential to ensure optimal performance, energy efficiency, and to extend the lifespan of your ductless system.
During an annual service, a qualified HVAC technician will clean the indoor and outdoor units, inspect for any issues, check refrigerant levels, and make any necessary adjustments or repairs. This proactive maintenance helps identify and address problems before they become more serious and costly.