I live in Los Angeles and I’m not sure if this is something I can fix myself or if I need a professional.
Dirty filters or coils – restrict airflow and reduce cooling efficiency.
Loose or damaged components – can cause rattling, buzzing, or grinding noises.
Refrigerant problems – low refrigerant can prevent proper cooling.
You should turn it off to prevent further damage and have a qualified technician inspect it. Meanwhile, check and clean the air filter if it hasn’t been cleaned recently.