which was also the main reason why we after several test - have opted for this fan - also on site in the electric markets. The device is also suitable for smaller rooms and if you want to leave the fan on hot summer nights run overnight. But only at level 1! Stages 2 and 3 make more wind and of course sound - for sleep then not so pleasant. Other devices that have also been described as a still, however, were loud as a helicopter and made already at level 1 wind such that you had to worry about pneumonia to pick up the next morning. We were a bit disappointed by the pillars that are supposed to be supposedly quieter. Incidentally, we have bought the same fan / similar model last year at a local department store and is even quieter and at level 1 even less wind. Absolutely not to hear, and if you put the two devices side by side, one can see why. The engine runs as sort of like throttled can be seen with the naked eye that the rotor blades are running more slowly than in the new device. We hope that part never gets broken. Obviously, these devices are not all the same, despite identical construction. Amazon price of around 23 euros absolutely great. Vesand and packaging fast and tidy as ever.