Excellent product, especially for allergy sufferers I have bought 2 air purifiers over the past 7 years. I am able to control my allergies better with the air purifiers and have reduced how many sinus infections I have had over the years. I love the auto-ship feature with the filters. I know I'll get a new filter on a regular basis and I don't have to worry about ordering it myself.

Outstanding Product We have one of the Alen room air purifiers (T300) for a couple of years now and it works as advertised. We receive our air filters every six months and are very satisfied with their service. This year at Christmas time they even reduced the cost of their filters which made it even better. Amazing product with great service!

Great product, customer service needs some work After researching for months, I decided to order two Alen air cleaners in early November. I called to talk to a customer service rep because I had a special request concerning shipping. I wanted to get the filters before Thanksgiving but was unsure of when to order them because I was going to be out of town and I didn't want to miss the delivery. The rep told me I could go ahead and order and he would talk to shipping and delay the shipping of my order. Instead, my order shipped right away while I was out of town. Everything turned out fine, as a friend watching the house brought the filters in before they were stolen. The point is, I didn't need to spend 15 minutes on the phone with the rep who was not able to take of the delayed shipment as promised. The other thing I found disappointing was finding out they had a "Black Friday" sale. I could have saved $150 on my two A350s. Here's how Alen's rep could have guaranteed they'd get a 5-star review: when I call tell me I should just wait another 2 weeks and order after Thanksgiving to save money and get the shipment delivered after my out of town trip. As for the filters, they are fine. I live in the desert with lots of dust and I have dogs. The amount of dust in the house is visibly reduced and my home doesn't smell like dog. The low settings are very quiet. The highest setting is a bit noisy but that is to be expected if you expect it to move that much air around. It actually helps me at night because I sleep better with white noise. Though I don't have bad allergies I am less stuffed up than I was before I bought these air cleaners. I would recommend this company and their product to anyone, just don't expect any personalized customer service if you call instead of ordering online.

Alen - Outstanding Purifiers and Company! We purchased a unit directly from Alen Corp about 5 years ago. The unit had an issue with the fan speed. Alen Corp simply had us send a photo of the unit and a cut cord. A replacement is being shipped out asap. We have loved and used our until almost daily since its purchase! Love these purifiers and Alen customer service is outstanding!!!

Great but need battery backup My Alen filters, all four of them, are super and quiet. But with one second power blips common, we often find that the filters have been turned off and have to be manually turned on again. It would be ideal if they could incorporate just a few second backup to not not shut the machine down on a power blip.