This unit has performed far better than expected. The inside unit is supremely quite, and the external unit is not only very quiet, but virtually vibration-free. The required temperature is rapidly achieved, and the "wind free" state is exactly that: No draught of air on any occupants in the room. The "Smart Things" App enables the unit to be controlled from afar, which is particularly useful on very hot days, when cooling can be switched on in readiness for our return home from an outing. Elecricity consumption of this inverter unit is surprisingly low (particularly when compared to a standard compressor-type airconditioner unit). This product is HIGHLY recommended.