This Miko air purifier is just what I've been looking for. It's size is perfect for my small 700 square foot apartment. I had a large unit by another brand and it quit working. I noticed the difference in the air quality while I was without one. I searched and researched online for a replacement for quite some time. When I saw this one I really liked the small size and the modern style. The many good reviews for it's effectiveness etc. helped me in deciding to order it. I'm so glad I did. I noticed some people were complaining that it was difficult to find replacement filters for it. I just went on to Miko's website and saw them available for purchase there. One filter is $19.99 which is very reasonable. If you're considering purchasing this air purifier, I'd say, "Go for it".