At my workplace, I had eye and respiratory problems, due to the ventilation. I heard about Teqoya TIP9 air purifier. Today, after two months, I see a significant improvement. My respiratory problems are reduced by 90% and my eye problems by 30%. I feels breathe cleaner air […] With the device, working in an old, dusty house is possible because the dust is considerably reduced. The device is incredibly simple, requires no filters. I can only recommend it to anyone sensitive to this problem, anyone who is asthmatic, or anyone wanting to protect their health from indoor air pollution.