I was called to diagnose a Lennox split AC unit that was not cooling properly. Upon arrival, I performed a thorough inspection of the unit, checking for any obvious signs of damage or malfunction. I checked the refrigerant levels, tested the electrical components, and performed a pressure test on the system. After diagnosing the issue, I provided a detailed estimate for the repairs and recommended the best course of action. The customer agreed to the repairs and I scheduled a time for the technician to come back and complete the work.