Responded to an AC repair call where the unit was running constantly but not cooling. Diagnosed the issue as a refrigerant leak and a clogged air filter. Repaired the refrigerant leak and recharged the system to the correct levels. Replaced the clogged air filter to restore proper airflow. Inspected and cleaned the condenser coils. Tested the system to ensure it was cycling correctly and cooling efficiently. The AC unit is now operating normally, providing effective cooling.