The answer to 'how to clean AC' is to regularly clean your air conditioning unit to maintain efficiency and prevent breakdowns. This involves cleaning the outdoor condenser unit, indoor air handler, and air filters.
Start by turning off power to the unit and removing any debris or vegetation around the outdoor condenser. Use a garden hose to gently spray the coils, being careful not to bend the fins. Then, use a soft-bristle brush to remove any remaining dirt or grime. Inside, replace the air filter every 1-3 months, or as recommended by the manufacturer. You can also clean the indoor coils and blower assembly using a vacuum with a brush attachment.