Love my Alen purifyiers. The ring helps me to know when they are picking up something in the air and then it clears it and the color changes again. It is comforting. Only disappointment is that mine cannot be upgraded to the new versions that are reading voc’s, since this was the main reason for the 45i. And I have an older 75i that I guess is now outdated unfortunately l
I can't believe how much of a difference this purifier made! We suffer from wildfire smoke for the majority of the summers now and it has been a struggle for our family. With the purifier, we don't have to take our morning allergy pill nor have to wear glasses due to constant irritated eyes. Most importantly, we no longer struggle to breathe and our constant headaches from the smoke are gone. Our sleep quality noticeably improved too. It is an amazing investment and we love it so much that we bought another one for our second floor.
I bought it yesterday but I noticed it doesn’t have UV light my loved one was diagnosed with TB so I rushed to get this but have to return it and find something with UV