AlenAir Purifer BreatheSmart 75i HEPA w/ Pure Filter for Large Rooms up to 2600 Sq. Ft. - Perfect for Living Room & Kitchen - Captures Allergens, Dust, & Mold - White

An excellent product! This is my second Alen BreathSmart Air Purifier. Because the first—used for an upstairs master bedroom—work sufficiently, I decided to get a larger one for the entire downstairs area. The larger one has been working extraordinarily well. I have glass coffee tables, end tables, and tv stand that would be covered in dust two-to-three days after thorough dusting. Since I have been using the purifier, dusting has only been necessary every couple of weeks, and even then it's primarily to remove smudge marks, not dust. Even the wooden floors stay, essentially dust-free, for weeks at a time. The motor is inaudible when the air is clean, which is now, most of the time. The BreathSmart Purifier was quite active during the unrelenting smoke from the series of massive, historic, fires here in northern California. The sound of the motor was certainly noticeable, then, but not at all intrusive to typical household activities (e.g., talking on phone, watching tv, reading, sleeping, etc.). The automatic settings have been working perfectly well. It activates its higher settings in response to food smells from cooking, but returns quickly to its inaudible mode in fewer than 20 minutes, or so, after cooking has ceased.The next stage of product development should be the creation of a much smaller version of the product while maintaining the same quality and performance. Still, the appearance of the purifier is as aesthetic as it is effective. The blue light, indicating the air is clean, is both reassuring and comforting.An excellent product, to be sure!

We live in an older home and dust and other flying debris is rampant. I am allergic to dust and almost constantly having to wipe my nose. I've been wanting one of these things that would actually clean the air I breath in my home. I read on Consumer Reports that this one did what I needed done, cleaned the air of the particles I could see floating in the sunlight coming in the windows.It is a bit expensive but what is the price on one's health. I rolled the dice, it came, way to simple to set up, just very nice. The proof was in the air quality. I set it on automatic and it started running on high with the circle of light showing dark red. After a few hours the circle air quality indicator gradually turned green. I noticed the difference soon and am breathing much better now. I love this thing. Worth the cost if you want to breathe clean air in your home. When I cook anything in the kitchen(one room away from the machine) it kicks into high gear, the light turns toward the red and it goes louder until the air is clean again. I only hear it running when the air quality deteriorates from some known source. It cleans the air of dust, smoke and other stuff I'm sure I don't want to breath. Like I said, I love it.I recommend this product.

Even if you can't tell by the disappearance of odors and the improved breathability of your indoor air, you can tell this thing is really doing something by watching the lights and fan on automatic, as they work to clean the air.We initially got this when some major concrete work was being done nearby that would've sent cancer-causing dust into our house. We sealed up the doors and windows and even so, this machine knew the air needed to be cleaned and did its job. Since then, we leave it on all the time unless we want to keep windows open for "fresh air", at which time it ramps up, detecting that our outdoor air quality isn't as good as what we have indoors!Ratings in other sources mention that other units are quieter. I have to say that if you're bothered by whatever noise this unit is making on its lowest fan speed, you're ultra sensitive. I have a sound meter and it never shows anything above background noise on the lowest setting, and while you can hear it when you're close to the machine and the room is dead quiet, it's as quiet as anything you're ever going to need. I can hear our refrigerator on the other side of the house when it's on over this machine. Noise absolutely is not a problem!

I'm a long time Amazon shopper and this is only my second review. We have a large basement and I tried other air purifiers that didn't work very well. This thing works. Not only that, it ran in our basement 24 x 7 for 5 years straight. A couple of weeks ago it went on the fritz after cleaning the filter. The unit advertises a lifetime warranty so I contacted Alen about it. They gave me a couple of troubleshooting tips that didn't help so they sent me a new one right away. The replacement was quick and hassle free. Rare these days.