Manufacturer Coleman Model # CF36CXA1A1 Serial # W1A9537533 Customer said air conditioning was not working properly. The system is completely empty of 4-10a refrigerant. Using the leak detector I found the leak in the evaporator. We will need to replace the evaporator coil and fill with the proper amount of refrigerant. Then perform a air conditioner maintenance making sure all components are operating properly. Customer had a parts and labor warranty. He will only need to pay for a maintenance or chud club maintenance membership.