The answer to 'best preventive maintenance' is regular HVAC system maintenance. This includes annual tune-ups, filter changes, and inspections by a qualified HVAC technician. Proper maintenance helps ensure your system runs efficiently, extends its lifespan, and prevents costly breakdowns.
Some key preventive maintenance tasks include cleaning or replacing air filters every 1-3 months, checking and tightening electrical connections, lubricating moving parts, and inspecting the refrigerant charge. A technician will also perform a thorough inspection of the entire system, identify any issues, and make necessary adjustments or repairs.