The answer to 'how to fix central air' is to first check the air filter and replace it if it's dirty. Then, inspect the outdoor unit and clear any debris or vegetation around it. Next, check the refrigerant level and add more if it's low. If the system still isn't working properly, you may need to call in a professional HVAC technician to diagnose and repair any underlying issues.
Maintaining your central air conditioning system is important to keep it running efficiently and prevent more serious problems. Regular maintenance, like changing the air filter and clearing the outdoor unit, can help extend the life of your system and avoid costly repairs down the line.