My wife and I have been suffering from allergies for a pretty long time now. We used to wake up every morning with our noses clogged. However, since I installed the unit it change my life in a matter of three days! We can definitely feel the difference and purity of the air. One week later, the result is AMAZING! We are sleeping better and waking up more energized. This has been one of my best investments. Thank you so much for your services!