Today the split-system that serves the office was checked. The concern was that it was not cooling well. I checked the temp split and the cooling was in range at 77degf in and 59 degf out. The condenser on the roof was checked for proper airflow and guages were attached to check the pressures against the manufacturer’s charging chart. What was discovered was that the condenser coil was covered with cottonwood. It was cleaned today and the temperatures were rechecked. The air filter was also replaced using a client supplied filter (1) 20x25x1. It was not packed however it did need changed. The system responded to the cleaning with more airflow through the condenser and it was rejecting more heat. The refrigerant level is correct. The condenser was reassembled and my findings were relayed to the client. Thank you, Jon