Customer Ratings & Reviews

Good looking, easy to use, and seems to work well so far! We've only been using it for a couple days, but I'm pleased.

My congestion disappeared within several hours of starting to use this air purifier, just as the reviews I had read stated. The air is so fresh and dust is minimized. Wonderful product which lead me buy a second 411 model for another bedroom, then a 311 model for my living room. Excellent products which really deliver results.

Very very quiet. Delivered on time. No issues with it.

Easy set up and very quiet. Somewhat bulky but light weight.

Excellent Filtration, better and faster than my Dyson which was 3 times the price, setup took 2 minutes. It's plug and play and easy to use. In my son's room I set the sleep mode which does not disturb him at all.

This is my second unit purchased for my bedroom since the first unit was cleaning my living room air so we'll. Love the air indicator and auto speeds. Cost of ownership is really great when compared to other units out there.

This little guy is a workhorse! We thought he wasn’t really doing much until one day after some kitchen smoke from cooking lit him up like R2D2. After changing the filter we could really see the evidence.

Works great! Gets the air feeling fresher in no time. We use in a single room, but with the door open it feels fresh in the hallway and outside rooms as well.

Perhaps the room I placed this air purifier was too big but it did not respond well to increased level of "dirty" air from cooking, other odors, etc. when set in auto mode. Ended up returning. The best thing about this machine was its design.

After reading other reviews I decided to pick this model for master bedroom as the best fit without too much fan noise. So far the 311 Model has been effective and quiet. I and my wife are pleased as there is no loud fan noise.

Makes it easier to breathe. I have mine running 24/7 and I've noticed I have less breathing problems in my room. It wasn't right away but after a few days.

Setup could not have been easier and looks better than most other purifiers in the market. Can’t give it 5 stars yet as have only had for a few weeks and want to go through replacing the filter. Purifier showed quality in my room was good, so feel better knowing that.

The Blue Air 311 Purifier system seems to work well. Caveat: I have no complaints, but I have to admit I have very few ways to accurately state that I’m totally sure this machine is doing everything it’s supposed to do. Without some kind of technological equipment, I can’t really say a whole lot about absolutely how well it works. So, based on trusting that the metrics in the machine accurately detect air quality (particulates in the air) and can assess the situation, and generally that the machine does do what it claims in terms of the rate of air exchange, I would give this machine full marks. The Blue Air 311 is an attractive cylinder that sits unobtrusively in a room and does its job. There are not too many bells and whistles to handle, which is pretty normal at this price point. There is not, for example, an extra app or a whole lot you can control. As far as I’m concerned, that’s fine. If you are interested in that more delicate ability to adjust settings, there are choices at higher price points. For this machine, I’d say there’s a good balance of value and efficiency. The purifier has four settings--auto, low, medium, and boost. On Auto, the unit is incredibly quiet. On low, it’s still pretty quiet. Even on boost, the unit is not loud, and quieter than most fans on high. I know this would not keep me awake, but not much does to be honest. Still, it seems very unobtrusive to me, and is far quieter than the air delivery for my heating system! The modes are controlled by tapping the top of the unit, which has a touch-sensitive area. A little indicator lights up to tell you what mode you’re in, but it doesn’t stay on. (This is largely good, as it is not distracting in the dark, but it can mean you have to go touch it to know what mode it’s in if you’ve forgotten. Unless it’s on boost or auto, I would have to touch it to know the level for sure, as the noise differentials are small.) There is also an indicator light on the front of the unit that reads blue, yellow, or red, depending on air quality. So this little sensor lets you know if there is acceptable, medium, or high levels of particulates. The auto setting will cycle through the sensor settings when you turn it on and select the appropriate mode based on the sensor reading. It has been blue almost all the time I’ve had the unit, I admit. I purposefully tested it by (safely) burning a piece of newspaper in the room with the purifier. After a bit, the indicator changed from blue to yellow to red. Within 25 minutes, the unit (on boost mode) had cleared the matter and gone back to blue. I’ve also seen the indicator turn yellow based on cooking in the kitchen (not the room where we have the unit), so it seems fairly sensitive. When I executed the newpaper experiment, I noticed that bits of ash and crumbled newspaper detritus that had been in the air were eventually sucked onto the outside of the intake surface (under the “skin”) and I could tell that, yes, the unit was actively bringing air in.There’s also a good amount of dog hair on the skin now, and I’m glad that I can take that off and wash it. A unit that did not have a washable outer screen would be far less desirable for pet owners, I think. I should note that this unit is also rated for about 400 square feet of space. That’s a good size room. It’s important to pay attention to that rating, because many units will be rated for smaller spaces. The quietness, energy efficiency, and generous size capability are real positives for this unit. The main filter under the fabric outer skin is a typical round, accordion style filter, somewhat like what you might see in your furnace or in a vacuum. But it seems pretty robust, and in looking at it, no dog hair has gotten through the screen to clog the filter. Replacing the filters is a tad expensive, but this cost will be similar with most purifiers. Know going in that you will need to replace the filter at some point (the machine will tell you when it’s full). I liked as well that there is an electro-static effect with this unit, but NOT an ozone creating one. There are plenty of units that hide the fact that they create ozone, something I do not want to add to my home. This purifier has been approved as safe by the state of California (CARB tested) for ozone. To me, I will say anecdotally that I feel like I can breathe easier and have less congestion. I have some pretty good allergies to dust, mold, and pollen, and generally don’t feel like my nose works that well. It seems to be quite clear at the moment, but I’ll say it’s winter and I will be curious to see what happens come spring.

My nose used to run while I was sleeping every night, without exception. Purchase of this product stopped that and allowed mr to get better sleep. This thing is great

Does an excellent job in providing fresher, dust free air in 12x26 bedroom.

It's a simple design, that works really well. The test was to remove smells in the air and it did this quickly. The auto function seems to work really well also to clean the air from pets.

Blueair is amazing! Bought this for my kitchen space while cooking! Very efficient and user-friendly! Covers enough space and clean air in minutes!

Terrific. Glad i bought it. I bought it as an additional air purifier and my coughing has stopped.

I must say that this 311 Blueair purifier is exactly that it just works I noticed in about 45 minutes no sneezing clean air and no more runny nose

Purchase this for the bedroom and it has been working good. It helps eliminate odor and dust. I noticed the surrounding area near the filter has less dust on the surface. If you have a larger bedroom, you might want to get two, one each side of the bed.