Overall the room seems fresher. We have ours in our family room. The fan levels are nice however ours is usually on low.. The schedule program makes it seamless. At first I was skeptical but the air does seem cleaner not as stuffy. It took about 2 days to notice and we run the schedule on 3 off 4 though out the day.
We got this purifier after searching for one for what seemed like forever, and so glad we did. Husband has already seen an improvement in quality of sleep- breathing much easier!