Bests & Worsts Reviews from Amazon

I normally do not write reviews but in this case I am extremely happy. This item did EXACTLY what I expected. I moved in to a typical commercial carpeted office that smelled of smoke, plastic (totes, you know that diaper pail smell), and god knows what else. One room was about 200-300 sq ft and the other about 400 sq ft. I purchased and returned four different units from Lowes and Home Depot costing between 150 and 300.00. After running each for about a week the smells still lingered. Mainly the new filter smell masked the odor for the first two days then the original odors started to linger again. I thought I was going to have to remove the carpet and any other fabric. I remember my parents had something similar to this years ago and it worked well. After an hour on max, in each room with the door closed, it took out everything. There was a heavy ozone smell which dissipated in about a half hour with the original odors gone! I keep the ionizer on most of the day with the ozone setting on low for about an hour in the morning on days I have clients in the office. To me this keeps an internal office with no windows pretty airy in my opinion. If you are a smoker, do not waste your time with any other air filters that cost two to three times as much. If you have allergies or are in a dusty environment that requires a HEPA filtration option, then by all means spend the money. But if odors and smoke is your target this small box does the job. Only thing to be cautious with this unit is it works EXTREMELY WELL. The downside is if you or your clients are sensitive to ozone you need to think ahead of the game with this. Only use the ozone setting when you need to eliminate hard to remove odors. Running on high for two hours with the room closed and UNOCCUPIED (including pets) should do the trick. I personally leave just the ionizer/fan running throughout the day with the ozone function off. The directions are pretty simple to follow but remember everyone's sensitivity to ozone is different. Keep this in mind if you are using this in an office setting.