I’ve had 2 of these for a week now and they are very impressive. Larger than I expected and very well built. I have one on the 1st floor that’s extremely quiet on it’s lowest speed and one upstairs in my bedroom that makes a slight ticking sound on the lowest speed that’s not enough to bother me and both run smoothly on higher speed’s. Air smells clean and overall I am very happy with the units. They also look great !
We originally bought a smaller unit for our bedroom and there was such a noticeable difference in air quality that we purchased this larger unit for our open floor plan den. The first thing we noticed was that we ( and the dog) woke up less congested with allergies each morning. The air feels crisp and clean. In the den, it has been a couple of weeks but we can now feel a difference in the air quality. These units are not cheap but they are well worth the investment.
We have had the Alen Air Purifier less than a month, but it impressed me right from the start. Nice looking, easy to use and so quiet. Sometimes I don't even know it is on. I have noticed a difference already. It is more money than I wanted to spend but you get what you pay for. Air quality is very important in living well. I would highly recommend this model.