Performed diagnostic on 8 year old Goodman system. Met with Jose the tenant. System is not cooling. Tenant states they had to add refrigerant in September. Cycled system for cooling. Unit kicks on normally , no cold air coming out of the vents. Checked refrigerant levels and refrigerant is nearly flat. Found leak at outdoor condenser coil on bottom corner. Welds on refrigerant lines also look very bad. Called homeowner to go over findings and recommendations. Need to get a price from Goodman for condenser coil. Will be following up with. homeowner tomorrow. Homeowner approved to charge card on file for diagnostic, fee will go towards repair if moved forward.