I had high expectations for this fan as I was wanted to upgrade from my basic chain store fan. I do have central air and ceiling fans but the extra air from a circulator or fan is comforting. After shopping around I narrowed the choices down to the bladeless fan and the vornado air circulator. After reading the reviews I thought this was the best choice. WRONG! I've only had the fan a little over a month and it leans forward (the base quality is comparable to a box fan). The height adjustment slides back down after lifting it up. I have no small children, pets or anything situation that would cause the fan to start to lean. It just sits in the corner. The circulation of air does not does not exceed any basic fan found at any chain store for much less. The cost does not match the quality or the output. The only reason I have not returned the fan is the cost of shipping to return it.