On unpacking this appeared to be a very well constructed, sturdy little fan. On top of our wood burner it started spinning within about 10 minutes and was exceptionally quiet. All great! However it was totally ineffective at spreading any heat around. You could feel no air movement from the fan, even holding a hand less than a foot away from it you would not know that it was there. We requested to return it the same day we received it. For £40 I think maybe look elsewhere, I would not recommend this product for air or heat circulation at all.