The answer to 'how to clean central air' is to regularly clean and maintain your HVAC system to keep it running efficiently. This includes cleaning the air filters, condenser coils, and other components to remove dirt, debris, and buildup that can reduce airflow and system performance.
Cleaning your central air system should be done at least once a year, typically in the spring before the cooling season begins. This helps ensure the system is ready to handle the summer heat and humidity. You can do some basic cleaning and maintenance tasks yourself, but it's also a good idea to have a professional HVAC technician perform a comprehensive inspection and tune-up annually.