I installed inside the wall to replace an old and noisy smaller window type unit.  I just began to use the new LG less than a week ago, so am still getting to know how to use the features.  It is so much quieter than my old AC and I like the energy saver feature, so the cooling shuts down when the thermostat senses it has cooled the space, and every few minutes a quiet fan comes on to check if the room needs more cooling.  I still have a lot to learn about this LG air conditioner.