This ac does what it is supposed to do but does something I find annoying. In energy saving mode the unit will shut down when the temp is reached. That's good. Less good is that the fan will turn on every 3 or so minutes to check the air. This creates unwanted noise. When cooling is again needed the compressor and fan start again and the cycle is repeated. Why the fan is needed for the sensor to check the ambient air is a mystery to me . Other then that all is well and the unit does a good job of cooling.