We had Dave check Freon which was up to specs. Dave also leak tested the A- coils and compressor and was not able to find any leaks. When the unit was installed the refrigerant lines were not replace since they run under the concrete floor through a conduit. We assume the lines are original and my be corroded and almost impossible to remove to install new lines but no one has attempted the task. We plan to have your company move the compressor off our patio and new lines installed at that time. However, we must gain approval and permits from On Top of the World Management. If they approve the move and issue a permit, we will contact you to complete the job.