The answer to 'what does preventive maintenance do' is that preventive maintenance helps keep your HVAC system running efficiently and prevents costly breakdowns. It involves regularly scheduled tune-ups and inspections to identify and address minor issues before they become major problems. This can extend the lifespan of your HVAC equipment, improve energy efficiency, and help you avoid unexpected and inconvenient system failures.
Preventive maintenance typically includes tasks like cleaning or replacing air filters, lubricating moving parts, checking refrigerant levels, and ensuring all components are functioning properly. By staying on top of these routine maintenance tasks, you can help your HVAC system operate at its best and potentially save money on future repairs.