The answer to 'how to clean preventive maintenance' is to regularly clean and maintain your HVAC system to ensure it runs efficiently and lasts as long as possible. This includes cleaning the air filters, coils, and other components on a schedule recommended by the manufacturer.
Cleaning your HVAC system's air filters is one of the most important maintenance tasks. Dirty filters restrict airflow and force the system to work harder, reducing efficiency and increasing energy costs. Filters should be checked monthly and cleaned or replaced as needed, typically every 1-3 months.