I am so thankful I have this machine! I previously have owned a bunch of smaller air purifiers to help with the smell of dogs per a realtor’s suggestion. I moved into the country and into a home I started remodeling and my allergies went bananas! I was coughing and sneezing so I plugged in my little ones but they were not large enough to do anything.I started doing a ton of research and this was a consumer reports top 10 (#2). I tried this one and the coway airmega 250. This one was hands down the winner. My dogs come running in and kick up dirt, it turns on and helps clean air. Contractors are here working and making a dusty mess, it turns on. I love the app to monitor the filter lifer and air quality.I love this so much, I went to Allen’s website to register my unit and saw they had a whole house promotion so I bought it and basically have a unit in every room. My coughing has subsided, my sneezing is better and my sleep app shows I am snoring less.The aesthetic of this unit is awesome and it is quiet too. I am so pleased with my purchase and highly recommend this everyone I know!

Love that it's much quieter than my small Honeywell. I can sleep with it on. I also love the auto mode which changes the speed as air quality changes. I had burned oil in my oven [terrible fumes] and I opened all windows and doors for a good while..but turbo mode cleared the fumes which remained in a half hour or so. This, imho, is a good product.

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!

I'll get to why I knocked a star off my review in a minute (check out my update at the bottom, back to 5 stars). Just know, this thing is amazing! I wouldn't call it a great value, but it's worth every single penny. We have 4 dogs in a single story open design of about 1250 square feet. I instantly noticed a huge improvement in air quality within a short time after turning it on! The auto function works amazingly well. It will be sitting there on it's lowest fan speed, having successfully cleaned the air all day/night. The little blue circle indicator light tells you your air is currently at it's cleanest. I'll light up a joint about 20' from the purifier and within a minute or so I'll notice the fan speed crank up to its fullest! (It's still super quiet though, even on its highest you can't hear it with a TV on) Red indicator light! Then purple! It tells me right away that my air has been polluted and it's working to fix it. Within 20 or 30 minutes, the whole house is completely smoke and scent free! It's perfect for all you well-to-do stoners such as myself. You make good money, you have nice things, you're a grown up now! You don't want other adults coming over to your marijuana smoke filled house. Especially all your friends with kids. Or maybe you have kids? What kind of an example are you setting!? Opening the windows on a nice day only does so much. And if you have cold winters and can't open the windows, what then? You buy this thing ya dummy. All those problems will be solved.I knocked off a star because my wife is making me return it. She doesn't like how it looks. I don't think it's terrible. It's the great air purifier paradox: In order for it to work well it's needs to be out in the open, but to be out in the open it needs to not look stupid. There's a lot of air purifiers that I passed over based on looks alone. This one I was on the fence about, the color choice of the panel helped push me over. I'm going to add a picture to this review. If you agree with me and think it's looks not that terrible, leave me a comment! Or if you're wrong and agree with my wife's decision to return it, please don't let me know.Anyway, you can turn off the panel lights by pressing the big colorful button in the middle while it's running. That's obviously nice if you're gonna use this in a bedroom. It'd be nice if you could turn the panel lights on and off without having to turn the entire unit off. Seems like an unnecessary power cycle just to adjust the lights. But hey, it's got a lifetime warranty so who cares if it breaks from excessive power cycles!Long story longer - I'm going to have a hard time replacing this with something else, especially with how well it works. The bar is set REALLY high for cleaning the air in my house now after owning this thing for only a few days. I'm addicted to the fresh air. I work from home and spend a lot of time here. It feels really nice. I will caveat this entire review and say this is the first air purifier I've ever owned. Maybe they all do pretty well? Most of the major players have good reviews. I think it comes down to aesthetics when you spend this much. We don't have a ton of space in our house, so this thing has to sit right out in the open for everyone to wonder and ask what it is. It has to look good. I'll admit that it's not the sexiest. Unfortunately, function over form is losing this battle to form over function this time.P.S. - what maniac thought purple was the right color to indicate your air quality is at its worse!? Why would red indicate the second worst air quality?? Is there some standardized air pollution color rating system that I'm just not aware of?****Update 2 weeks in, back to a 5 star review****OK, we tried to replace this unit with a different, more aesthetically pleasing purifier. We tried the Coway AirMega 400. It looks great, covers a similar square footage, and has even better features than this Alen 75i unit....but it flat out just didn't work as well. It was also MUCH louder. With this Alen 75i unit in the same exact position as the Coway AirMega, the air was noticeably cleaner and smell free. Also, on it's loudest setting the 75i is hardly noticeable with a TV on. The Coway AirMega was at least 4 or 5x louder on it's loudest setting...to the point where you didn't want to run it on it's highest setting unless you weren't home.We tried this unit in a few different positions around the house, some out of the way where it didn't work as well, and now in it's new spot (different from the pictures I posted) and it's seriously great! My wife isn't thrilled with the spot we landed on, but it works really well and isn't as bad as she once thought. Seems that function over form has come through to win in the end!

I purchased this unit to deal with high mold. I just received this unit yesterday and set it up. I have it set to manual as I want it running at max efficacy for a few days to see if I can impact the air quality in my home.The fan seems to be turning itself up and down on its own? Even on "turbo" it makes very little noise but there is barely any air moving out the back of the unit? I press the power button turn it off and then there's this huge increase in noise and air movement.....more like what I would expect from a "turbo" setting. But, then it stops. If it were set to automatic that would make sense. But on manual it is doing strange things all on its own.This is an expensive unit to be so buggy right out of the box. Sending it back before it becomes a long-term headache.