I have to say it was worth every dollar I payed for it! Brand new with great HEPA Filters. I just bought new upgraded ones for it for a little more and you get what you pay for. These filters work great for a big room. I did hours of research on these air purifiers. I'm telling you now if you don't do your research you could buy a product that does not perform anywhere near as good as the Alen T300. I just needed a small unit and it works great with outstanding reviews. Go ahead and do the research. Four Different speeds, 2 hepa filters, Ultra Violet Light Bulb that kills Germs, Bacteria and Viruses. And a negative ionizer which helps out the process even more. You will be healthier with one of these in your home. This is a great product with great results and the unit has a built in timer to tell you when to replace the filters! You will be pleased with this product, just as I was. Have a good one and thanks for reading this review on their outstanding product!