We have 2 boot dryer other manufacturers "worn out" in recent years. Here for hours boomed a Miefquirl aufheizte in the basement of the shoes and consumed a lot of electricity. These little fans get after a short time bearing damage and noisy. Quite different seems the fans in Osma boot dryer to a. A professional fan that when indeed for 3 seconds turn a sound like a jet plane by blasting makes :-) Afterwards but pleasant much quieter than all I had before. The airflow is barely warmed, not stressful for the leather, so that I can ventilate and normal shoes and dry it. It disappears and the smell of shoes that have been worn all day, and so they are ready for the next day. Smelly shoes I have therefore again can make to "neutral odor" usable. So I give a recommendation to use the machine not only for drying ski or hiking boots, but also for everyday shoes. The operation is very simple. Suffice it to the wheel of the timer to set the desired ventilation duration. Nevertheless, because a sound is heard, it is sufficient to take a room where you can close the door and the window it provides on tilt. Volume at a distance of 1 m = 71 dB (corresponds to the volume of speaking people) In the corridor will increase the volume with the door closed to the room with the fan from 45 to 51 dB. Ie from 3 db difference one notices anything. (Office with PC fan has with me 50 db) The power consumption is significantly lower than the other blower fan with approx 50W. The casing and the tubes appear to be made of stainless steel and make an indestructible impression.