The answer to 'how to clean HVAC system' is to regularly maintain and clean your HVAC system to ensure it operates efficiently and safely. This includes cleaning the air filters, condenser coils, and other components as recommended by the manufacturer.
Start by turning off power to the HVAC unit and removing the air filter. Wash or replace the filter as needed, typically every 1-3 months. Next, use a coil cleaner and a soft brush to gently clean the condenser coils, being careful not to bend the delicate fins. Vacuum or wipe down the blower compartment to remove dust and debris. Finally, check the condensate drain line and clean it out if needed to prevent clogs.