Update - hopeful and giving it a chance
Updated review as of May 28<br />Construction and two-way st. right outside my window are increasing air pollution in my bedroom. I bought this unit because I have been wheezing and the smell of construction and dust gives me a headache and bothers my nose and eyes - which is worse during hay fever season. I was hoping this unit would eliminate the need for a mask. Initially I noticed very little change in the air quality - although unit worked fine as a fan. I contacted seller and they have GREAT customer service. They were attentive and made several suggestions. I agreed to keep trying out the unit. Wheezing has gotten better, and I make sure the unit is at least two feet away from any obstruction. I am even contemplating the possibility of a second purchase. Give the unit a try. I am updating my 3 star rating to 4.5
Rating: 4 stars