We need to Vornado to air our flat. If we open the windows, we often get no fresh air from the outside, but the stuffiness of the lower apartments, or the cigarette smoke from the neighboring balconies. We therefore make the Vornado so on that he pushes our apartment air through the open window to the outside, and possibly even ward off the stench from outside. This works quite well! Even the internal bath, which although has a ventilation fan, but still often is too moist, you can ventilate well so between. Then you have to stop the whole apartment well ventilated, so that the hot air does not get caught elsewhere. Although the top speed makes significant noise, but one should not say "Wash my fur, but do not make me wet". As ventilation means it is essential for us.