I am a skilled professional that works for a Alaskan Air Conditioning & Heating - Tucson company. I recently completed a diagnostic on a Trane unit. The diagnostic process involved checking the unit's electrical connections, inspecting the compressor, and testing the refrigerant levels. I also performed a leak test to ensure that the unit was not leaking any refrigerant. After the diagnostic, I provided the customer with a detailed report of my findings and recommendations for any necessary repairs.