AC companies can come and install a new AC unit or repair your old one. When they come to repair it, they will first inspect the unit. They will then determine what is wrong with it and how to fix it. The AC company will then try to fix the problem by cleaning the coils, checking for leaks, replacing the filter, or even replacing parts of the system. read more here: https://miaminewairconditioner.blogspot.com/2022/08/when-to-replace-or-repair-your-ac.html