For this job I performed a cooling tune up. Home owner recently replaced 2 units for downstairs and requested to only have the older unit evaluated. The unit had a 13 delta and low refrigerant based on gages and superheat. I spoke to homeowner about proceeding with diagnostics to find what repair is needed, replacing the unit, or leaving the unit running as is and waiting until failure. Homeowner decided to let unit run until failure. Thank you for choosing comfort experts, have a great day!