Alen Air Purifier BreatheSmart 75i HEPA w/ Odor Filter for Rooms up to 2600 SqFt - Perfect for Living Room - Captures Allergens + Pet Dander & Odors

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 have asthma and also five large dogs and I live in the desert. I ended up buying three of these machines a big one for the front room and two smaller ones for two bedrooms and let me tell you this I have not found myself coughing, or having a hard time to breathe with these machines going, they are quiet and they do their job. In fact they do it so well that we have cleaned the filters out since purchasing them four times. They seem a little pricey, but trust me they are worth every penny and I’m so happy that I purchase them. I would definitely highly recommend.

Okay, so it is expensive. Like really expensive. I purchased it the day one of my kids tested positive with COVID-19 after contracting it at daycare. The setup was really easy. I have an older Alen Air filter that I also set up and it is super loud at its highest speed in comparison. On Turbo, you can barely hear it. I really like the color coding on the control panel to tell me if the air is dirty or clean. We're confident it works because it will go from blue (clean air) or yellow or red after the cats use their litter boxes or we sweep the floor on that side of the house.One of the primary reasons I decided on this large HEPA filter was that we have an open-concept house. In fact, I have a huge opening to a second floor bedroom so it's likely clearing 2000sq/ft+ in conjunction with my other Alen Air, which I keep on the opposite end of the house. Eventually, I'd like to get another one to put on that side of the house since my kids keep turning down the "loud" one.It's a big investment but it definitely seems to work and I like the feedback I get from the machine in terms of the easy to see color-coded air quality reading on it.I should note, that this did not prevent us from being infected but I think it helped clear the air so we weren't recirculating and breathing the virus in day after day. Covid-19 sucks and hurt but this made me feel a little better about not having the virus just hang out in the air all the time.