The answer to 'how to maintain central air' is to perform regular maintenance and cleaning to keep your HVAC system running efficiently. This includes cleaning or replacing air filters, clearing debris around the outdoor unit, and scheduling professional tune-ups and inspections.
Regularly changing the air filter is one of the most important maintenance tasks. Dirty filters restrict airflow and make the system work harder, reducing efficiency and increasing energy costs. Filters should be changed every 1-3 months, or as recommended by the manufacturer. You should also clear any leaves, grass, or other debris from around the outdoor condenser unit to ensure proper airflow.