BISSELL air400 Smart Air Purifier with High Efficiency and Carbon Filters for Large Room and Home, Quiet Bedroom Air Cleaner for Allergies,Pets,Dust,Dander,Pollen,Smoke,Hair,Odors, Auto Mode, 24791

I love this product. It works, it makes my apartment smell cleaner and more fresh, and it makes the air feel more clean. It's incredibly quiet. Pros and Cons:Pros:- It works really well. My apartment smells much better. As a dog owner, this is a must-have.- I moved it to my kitchen after cooking some food that got smoky -- I turned it to max mode, and it cleaned up the cooking smells and smoke within minutes. It actually smelled more like cooking smells in other rooms than in my kitchen, after a few minutes in the kitchen. I wish I had more than one of these units.- Adjustable -- it has an auto-mode, silent mode, max mode- It's quiet. I can sleep with it on silent mode and sometimes auto-mode. I'm usually not able to sleep with devices that make any sound -- I have no issues with this machine. Silent mode is virtually silent. There's no 'hum' -- you only hear a quiet whisper of the air coming out of the top when it's on its lower settings.- It really senses the particles in the air. You'll notice this number go up if you bring it near the kitchen, for example. Then you'll notice the number go back down as it cleans the air- The lights adjust brightness automatically depending on the ambient lighting in the room. If your room is bright, the lights get brighter. At night / in the dark, the lights dim so they don't keep you up if you're in your room. The numbers also turn off when the lights dim.- It's lightweight -- it's very easy to pick up and move from room to room. There's handles on the side which make this easier- It has a timer mode. I haven't tried this because I keep this thing running 24/7- It doesn't get hot -- the machine does not give off excess heat/energy when running- It doesn't smell like chemicals- The air blows out of the top of the machine -- I personally prefer this because I do not like fans blowing on me during winter.- The filters (there are two types of filters inside this unit) were very easy and quick to installCons:- It's a little bit large, but it's easy to carry. There were no color options, and it might not be everyone's favorite aesthetic- The programmed sound it makes when you plug it in or turn it on is insanely loud. No idea what the manufacturers were thinking with this one. It's a quick annoyance, and it won't happen in the middle of the night if you've already turned it on. I wish there were a way to disable this little chime. I hate turning it on late a night because I'm worried my apartment neighbors will hear it. This isn't a dealbreaker, just definitely something that's really annoying for an otherwise nearly perfect product

I have had this for a few days and am happy with its performance. Reading a lot of one star reviews I was concerned about the AQI sensor not reading accurately. I’m outside of Chicago and the air has been very bad this summer from wildfires, would rather have bad air than the heat in the south west. First day the sensor was 002 all day. Over the weekend had a smoker over and with each puff I kept glancing at the numbers rising. Before long the air cranked up, once the number hit 400, I assume it was on high as you could hear it really blowing. I never realized how bad even a few minutes of second hand smoke pollutes the air. This machine had the numbers dropping fairly rapidly. Within half hour it was in the low hundreds and back to 002 around an hour. Naturally, we had to see it all happen again, and again it cleared the air quickly. The smoke was not being blown at the machine and person was about 12’ away.I had basically took it out of the box, checked that the filters were there and new (ATTENTION: the filters are new and in plastic that you have to remove), plugged it in and pressed on. I’ve left it running as my windows are leaky since I would cough all day inside with bad air days on top of allergies. Don’t know if off and on would shorten the life like some have claimed. I have an older air cleaner that couldn’t really remove PM2 and that one had no problem being used just at night.Another feature I noticed is that the air blows out the top. It seems to spread around the room better than the front blowing types. Plus I don’t get complaints of someone getting too cold because air is blowing on them and be forced to turn it off. Overall so far works well, and hope it lasts at least a decade as my old less efficient model.

This is an absolute workhorse. Works like a champ. We purchased it to deal with wildfire smoke, but have continued to use it as it’s made a huge difference in our wintertime interior air quality. Ours has run on auto pretty much 24-7 since September in our main living space. It’s quiet, efficient, and I really like the lighted display panel readout.Context: We bought it in September, during the terrible wildfire smoke. We were totally unprepared, and not only did we not have any air purifiers, we didn’t know the smoke was coming and had left several windows open upstairs. So our interior air quality was in the unhealthy for everyone range when this finally arrived three days later. When we started it up, our particulate reading was 165. Although it’s only designed for ~430 sq ft, and we were using it in a 1000sqft space, it brought our particulate reading down to the 60s overnight. In a little over 24 hours, our particulate reading was down into the 20s, where it stayed until the smoke cleared.These days, we have it running on auto near the kitchen. Most of the time we can’t even hear it and the reading stays at 2. Yes, 2! When we fry something on the stove, our reading will shoot up, but comes back down quite quickly as the purifier does it’s job. Just this month we purchased a 2nd one to put upstairs. We are now prepared for wildfire smoke. And can enjoy cleaner air year round.If you found this review useful, please let me know by clicking the helpful button. It really helps to encourages me to keep writing reviews.

Dating someone with animal allergies. It has helped control the dander changed filters once with whatever generic Amazon suggested and it seems to be working just as good as original. I’ve had it for several months and would purchase again. It’s on the larger side but does circulate a lot of air pretty quietly. There’s a little sensor near the handle on one side that can get dusty and will give you a terrible air quality read. You just need to open the little door and blow on it and it fixes that, make sure to try that before replacing the filter.