commercial air conditioning issue where the tenant reported warm air blowing from several vents. After inspecting the rooftop unit, I found that the condenser coil was heavily clogged with dirt and debris, restricting heat transfer and reducing cooling efficiency. I confirmed the problem by checking refrigerant pressures and airflow, both of which were outside normal operating ranges. I thoroughly cleaned the condenser coil, checked the filters, and verified that the blower motor and compressor were functioning properly. After a full system test, the unit is now cooling effectively, and interior temperatures have stabilized.