Alen Corporation Alen Ultra HEPA Air Purifier - A375UV  Product Reviews

"I researched this product online and decided to take a chance ($500?!)...figured I had 30 days to decide. I waited a bit impatiently for it to arrive but when it did I immediately ripped open the package, plugged it in and....NOTHING. The thing wouldn't even power on. I'm sure it's just a fluke but for the money I decided not try this company again."

"This is a great filter. We got it for our baby daughters room when she was having some problems. She's been good since. We put the filter in a room that we had been operating a Sharper Image model they pimp on TV commercials and the Alen immediately kicked on high and showed particulate on its indicator....even though the other filter had been on continuously (highest setting) and properly maintained. Another reviewer complained about the noise on auto...just leave it on setting 2 and it should be good from there. I have allergies that I get shots for (now) and have had no problem leaving it on this low of a setting."

"OK, so it costs a lot of money. They say you should replace the HEPA/Carbon A375 UV filter every 6 months (for $49 each). That's a bit excessive. However, the filter is pretty quiet at high speed (which I leave it on all day and all night long because my dust/dust mite allergies are THE WORST). I have one in my bedroom and one in my living room that run constantly on high speed. I have no idea whether the UV lights do anything or not, but I will try anything to help reduce my allergies. It is easy on the eyes and has a nice display, and it doesn't take up too much room. I also did research when I bought these (about 7 months ago) and they scored highly in air filter tests. If they were less expensive, I would definitely recommend them."

"Not what I've expected for almost $500. I got it three days ago. It produces ozone smell. On auto mode it can wake you up in the middle of the night because it suddently decides to go full speed. It's not programmable, so you cannot set it up to be turned on two hours before bed time for example like my other ones. Instructions are incomplete and difficult to match with the buttons on the purifier. If the smell doesn't go away, the purifier goes back. I have two other different brand purifiers, I have to admit that they are nosier, but don't smell."