I use the most fan while bathing my son to get the room in winter warm up more quickly and am absolutely satisfied. At first, he smells a bit strange, but that is and is not disturbing. The good thing is that he has so far never be overheated and can be handled relatively quickly after turning it off, without which one burns etc. I think whoever the fans, like me, only occasionally needs, never mind with the device incorrectly. How the device behaves under continuous load, I can not say, because I rarely use this to him. But the price-performance ratio was just the best!