Surprised by how quiet it is. Very easy to operate. We like the color notification. Definitely worth the investment as we have noticed a difference in our environment.
Excellent quality product. Runs very quietly and the Wifi/app capability is easy to use. (Only catch was setting it up on my WiFi network: my router needed to be re-set to 2.5 GHZ, so it took several extra steps). I love the auto-function and fact I can turn the display lights off. I had a Shark 400 purifier and it wasn't nearly as efficient as the Alen model.
Very happy with this purchase. My wife has allergies and within a few hours she noticed a big difference. We hardly know it's on even when it's on high. We liked the 45i so much that we purchased a T500 for the bedroom.
We have had the two 45i units in our main living spaces and the result has been wonderful. our neighbor has started burning firewood to keep warm this year due to the economy. This has caused the smoke to lay around our neighborhood on these temperature inversion days. the air quality outside is really bad. the air inside is fresh and clean. Thank you Alen!
I have an in HVAC air purifier and adding this one has really improved the air quality in my home. The air is cleared minutes after cooking now before it took hours I keep it between the kitchen and living rooms
Beautifully designed, right size, easy instructions, cost was ok (my first time buying air purifiers) and it works. And I see that Consumer Reports gives you the highest rating.