We arrive for unit not cooling properly. On arrival we immediately proceeded outside and found outdoor disconnect, partially unplugged. On further inspection, we found the outdoor contactor burnt and testing near manufactuerer max limit. We were able to turn the unit on and test it since it had been off for several hours. While testing the unit we also inspected the indoor fan motor and temperatures. Temperatures were cooling with 20° drop Which is perfect. We did find the indoor evaporator coil extremely dirty and causing the entire system to stress and contributing to the outdoor contactor failure. I discussed our findings with Stewart and he elected to replace the contactor today before complete failure. We also sent him an estimate to clean the coil and help the overall performance and life of the system. The unit is cooling properly on departure.