Customer Ratings & Reviews

I recently purchased an air purifier from Best Buy, and I’m thrilled with its performance! The unit is sleek, quiet, and incredibly effective at improving air quality. Within days, I noticed less dust and fresher air in my home. It’s easy to use, with intuitive controls and a compact design that fits perfectly in my space. Highly recommend this product to anyone looking for a reliable air purifier!

Works great. Have the larger one upstairs in the family room and this one in the basement for smaller area. Has auto fan speeds and changes color with air quality. Highly recommended.

I’m really happy with my purchase. This air purifier is exactly what I needed. It checked all my boxes. It looks very nice, fits my aesthetic perfectly. It has HEPA and carbon filter . It’s so quiet even on the highest level the sound is not too loud more like white noise . The filter is easy to replace the app let you know when the filter needs to be changed. The set up was very easy on my phone and connect to Wi-Fi very easily. I love that I can control it from anywhere. I’m also very happy that it tells me how long it will take to clean my air. It’s really improved the quality of the air in my home. my husband vapes and this helps keep my air fresh and clean . I definitely recommend it and am looking to purchase another one for my bedroom and one for my mom..

Received this item very quickly. Very easy setup. I programmed it to come on at 10:30 pm to clean our bedroom air right before going to bed. We have furry pets & I believe that I am somewhat allergic to their fur & dander, so I thought this would help my sleep. It does a great job & continuously monitors the air quality. Our bathroom is just off our bedroom & I've noticed that it is so sensitive that it even senses my wife's perfume that she uses after a shower and indicates a higher level of "pollution" .... an increase in airborne particles .... which quickly disappears after she's done. But I found this to be quite interesting! It is quiet & more than sufficient for this room size. One Note: DO NOT put anything on top of it. I momentarily laid my cellphone on it & the touch sensors somehow responded and messed it up, so I had to remove it and reprogram it, which causedvit to lose several days of monitoring data. No biggie, but it waa aggravating. Other thsn this, I am very, very satisfied eith it.

We purchased 2 Blueair - Blue Pure 511i Max 926 sq ft HEPASilent Small Room Bedroom Air Purifier - White/Gray. They are working well. We purchased them to help with removing contaminants and odors from our townhome.

Works very well, and is very quiet, I will be buying more.

So far I’ve been liking it. It is very quiet and I have this one in the bedroom. I do recommend this

Great price and works as described. I was struggling with allergies and congestion in my bedroom. After day 2 of using this in the house, my sleep has dramatically improved.

Works very well & I am very happy with the purchase. Would definitely recommend to friends & family.

This filter has been very good for my room , it removes dust and is very quiet.

I love it the stuffiness in my room has reduced so much

I think it’s easy to work so far no issues. I thought the Wi-Fi was messed up but disconnects of corse when u unplug it. Plugged it back in & room a few secs but works. Dropped it once by accident too. Seems pretty durable

Great quality and value as well as appearance of the product. Will recommend to others. Will purchase more.

Once, while hiking atop an 800-year-old volcano in Iceland, with a stiff wind blowing from the north Atlantic, I breathed in more fresh air than I thought I might have ever needed for the rest of my life. That might be an overstatement, but conversely, when you are breathing air that’s less than ideal and need a helpful hand in picking the putrid particles from the pleasant, you can rely on the Blue Pure 511i Max to help sort out the sordid air you may be breathing. How does this Swedish design firm achieve this? Surprisingly, not by capturing and ladling breathy ABBA harmonies throughout the room. Nope, it’s more like the magic of HEPASilent™ filtering employed at customer-selected speeds via the simple on-unit buttons, or via the available app. In addition to the three manual speeds, there are automatic and night modes, where the night mode drops the fan speed to a quiet minimum sound and an appropriately dim lighting scheme. The automatic mode seeks to filter out particles in the air to a level of PM 2.5 (Particulate matter of 2.5 microns in size), and is measured by an on-board particle sensor. As the air is being cleaned, the particle sensor measures and reports the perceived air quality to the app which shows five differently-colored display illustrations keyed to the air quality. Keep in mind that this unit was designed for smaller, closed rooms that are less than 193 square feet, or about 14 feet by 14 feet. The app also keeps track of the unit’s efforts in cleaning the air as well as use and filter condition based on time used and air quality filtered. Overall, a useful and well-developed app. I have to admit that I house a degree of skepticism towards the efficiency of products in this market segment. I don’t quite understand how a relatively slow-moving fan barely moving air can be expected to clean all the air in a room. It’s rated at 4.8 air changes per hour, which must be in the fastest speed, but it’s hard to believe that the slower speeds would do very much, other than clean the air in a very small and local subset of the room. The proof of effectiveness is, of course, going to be lodged in the filter and prefilter over time. This Blueair model is designed to capture smaller particles that pertain to elements like smell, smoke, pollen, as well as regular dust particles. The filtering of particulates of PM 2.5 size mentioned in their literature, is achieved by the use of electrostatic, mechanical and/or carbon filtering. There are three different filters that work with this unit. The included one, is the Particle and Carbon, and optionally available are the Allergenblock and the Smokeblock, which are self-evident. Some of the other features that I like about this product are the aesthetic design choices, the easy filter cleaning and/or replacement and the intuitive and well-designed controls. In addition, the outer fabric covering of the air cleaner serves double-duty as a washable pre-filter, as well as a cosmetic chameleon, due to its availability in numerous “Scandinavian inspired” colors at relatively low cost. There is also a subscription plan available that will supply you with your desired filter types at a reduced-price rate and at apt user-defined intervals. I’m also a big fan of included, quality, paper manuals for products, that have clear illustrations and readable type, as they have done here. The fan noise is, of course, proportional to the fan speed, but is quite reasonably quiet at from 19 to 48 dB per Blueair’s specification. If you need a white noise generator to help you get to sleep, this could be a fairly quiet one at the faster speeds. On the cons side of the equation, I’m not a big fan of permanently attaching a wall wart’s cord to the body of a unit. If there are issues with the power supply, it seems like you’re just creating more work or cost by binding them together, not to mention making it a little more awkward to move. I like this product for the performance, price, features and simplicity. In my use of the product, I did not have any particular air quality issues that needed to be addressed, and my daughter’s cat moved out just as this device arrived, so I was unable to test this in the cat’s sleeping area to see if it helped. However, used in our bedroom, it seems to be doing just fine, as I perceive no noticeable air quality issues and a bonus reduction of dust on furniture. As I have no way to verify empirical data on this unit in a short period of time, I will just have to trust that the specifications were drawn from reliable testing and adequate design. If this model doesn’t seem to fit your room size or other air handling requirements, there are many models in the Blueair lineup that probably will. Seems like a good company from previous product’s awards and all I’ve read.

One of the best air purifiers so far. This air purifier is great. It's no that big or bulky. It runs very quietly to the point that you can hear it. The bottom portion of the unit is the filter. The filter is covered by a cloth like cover. The filtered air is the pushed out from the top. The air can be a little cool at times. The unit can be connected to a app for more customized settings and features. On the app, it can give you detailed information on air quality, filter life, and more. One of the great features is the "night mode". Night mode makes the unit run more quietly but still maintain the air quality. The fan has three settings and then the night mode. The light indicators on the unit help the user identify if the air is clean. Overall, this is a great air filter the features of the unit itself is a great value the connection of the app to access additional features makes it even better. This would make a great gift for anyone. The size of the unit also doesnt take up too much space.

This a very essential product to be installed in any bedroom especially if you care about your breathing air quality... I've had several air purifiers before this one. Most of them are just a combination of fan and a HEPA filter installed inside. The fan is running all the time with adjustable speed. They used to work ok but with manual intervention every time. This one is something else. First, the Blueair is equipped with air quality measurement sensor that's measuring the concentration of airborne particles (Dust, Pollen, Pet dander, and other pollutants). The sensor, when in automatic mode, is measuring the air quality and adjust the fan speed accordingly. In the beginning, I thought that is not working as it kept showing clean air. Then, when I opened the window in the morning, it started kicking in at faster speed. It would max the speed fan if I am out of shower with the WC door open. The filter is a descent size. I read that you can wash the outer cover. It helps extending the lifespan of the filter. After unboxing, I connected the filter to power and installed the app. It was very easy to set it up and getting it connected. One negative point to mention here that the filter works with WiFi 2.4 GHz only. I had to activate it on my router. Shortly after connecting it to WiFi, my filter stopped responding. I thought it was bricked or dead. After waiting ~10 min it came back to life again. It was updating its firmware... I wish it asked my permission before starting the update or at least warned about it. The first night I set it to night mode. It was working all night with relatively quite fan. The room air quality wasn't very good. After an hour, it showed the clean air indication on the LED (in the front) and also on the app. In the morning, I decided to switch it to Automatic. I think it is the best mode to set. It would turn on sometimes depending on the air quality. Even at the highest speed, it is still acceptable. The HEPA and the cover are muffling the fan noise and suction. I can feel the air coming at the top as a good flow. HEPA claims it cleans 99.97% of airborne particles. I think it is believable. What is so good about it: - Automatic function and phone app: very nice features and options. Checking your air quality 24/7. - Fan speed is very good with low noise created. Very quite operation. - Easy to use: Simple control interface. Nothing to worry about. - Effective LED showing the air quality. - Filter lifetime measurement from the app and the possibility to order a filter for honestly a good price. - Filtration is very effective. You can actually feel the difference when cleaning. - Stylish design with a good size to be placed in your room near the bed or at a good corner. - Power supplied to the filter from a small power adapter. The adapter is external. I like that better than my older air purifier. What is not so good about it: - Filter price is on the high side... Still - Not supporting 5G WiFi. I had to set a new 2.4G WiFi network for making it work. - The price is a bit on the high side. I think this point is debatable when compared to other brands.. I would recommend getting it if you have new born baby or if you care about your room's air quality. Good as a gift too.

As an allergy sufferer that is irritated by the strangest contaminates (I choke when someone near me or at my table orders fajitas at a Mexican restaurant), I discovered the benefit of an air purifier by accident. I once shared an office with another employee at my workplace who had similar issues and she brought an air purifier into our space. I noticed quite an improvement and the weird "new construction" smells seemed to calm down as well. This Blueair 511i is not the largest air purifier I have used, but it is among the most powerful. The square footage coverage of this unit is a good fit for my small living room, and even though my home is "open concept", it's not fully open, so I found it was still quite effective in my space. At the time of my writing, it is autumn in my region and one smell that is frequent in my area is the smell of burning leaves. While I don't find it unpleasant, if the smoke is thick, it can be irritating to my nose and nasal passages. I also like certain fragranced candles especially when I have company, which is not much of an issue until I blow them out. Then you get that smell. You know the one. After just a few occasions of running this air purifier under either of these circumstances, I noticed quite a difference after it ran for a short time. When you are present amongst an odor, you because less sensitive to it, but if you blow out a candle, then move about your home and return to the room, you will still smell it for a while. The smell was barely noticeable after about 10 minutes of blowing out a candle and running the air purifier. The monitor on it (both on the device and the app, more later) still had "some work to do" but the smell was definitely all but gone. Since smells/odors are caused by particulates in the air, this device is a fantastic way to deal with them! I like to run it after cooking broccoli as well - love the veggie, hate the smell of cooking it. The Blueair line has a few features that are new to me from some of the much less expensive models I have used. The size and power is the biggest in this case, but like so many home devices, this one has a mobile app which adds a lot of functionality to it. AIR QUALITY MONITORING You can actually monitor this from the device itself. The small LED on the front will be lit with a color based on the particulate matter in the air - blue is as clean as possible, red means highly polluted, and then the spectrum in between. On the app, you can monitor in real-time the particulate count and a chart to follow it. In the case of blowing out my candle, my nose noticed a difference in 10 minutes, but as you'll see from my screenshot, it took about 30 minutes to fully clean the air. FAN SPEEDS AND NOISE LEVELS This is overall a very quiet device, but at high speeds, you will hear a fan noise. It's a pretty steady noise, so not distracting. Time will tell if as the device ages, that fan noise becomes more irregular. The top of the unit contains the button for changing the fan speed (it's basically a touch-sensitive device, but without the glass cover we are used to on our phones, tablets, and laptops). The LED light indicates the fan speed. On the mobile app, you can fine tune this fan speed to fall between the 0, 1, 2, or 3 level of the default speed settings to balance the effectiveness with whatever noise tolerance you have. LED CONTROL Hate the LED lights that are present on EVERYTHING an makes your home look like a spaceship in the dark? You can turn them off completely! Or if you like to be able to see the light to know if the unit is one, you can dim them significantly. You will need the app to do this. SCHEDULING This feature requires the app, but you can schedule the air purifier to run at scheduled intervals. For example, schedule the device to start running before someone arrives home in the evening, or schedule it to run automatically at dinner time to remove cooking smells. The scheduler can be configured to run at any time of the day and turn off at any other time. You can set a finite fan speed, LED brightness, and even what actions the device should take when that schedule is finished (including continuing to run but maybe at a different setting). Lots of controls here! OTHER NOTABLE FEATURES The device will alert you when it is time to replace the filter, and you can monitor its health in the app. Obviously the more polluted your air, the more frequently you will have to change the filter. The other filter (the mesh-like fabric cover) is washable and replaceable and is actually available in other colors if you wish to purchase those separately. There is a child-lock feature that when activated, will lock the fan speed so it must be unlocked to change it. This is handy as the touch-sensitive buttons on the device are sensitive and could easily be changed by a child or pet. Connecting to Wi-Fi is rather easy once you download the app and create your account. Once you have an account setup, you will be able to add additional devices and name them (I named mine Living Room). The included instruction manual will walk you through this - just follow carefully. Overall, this Blueair Air Purifier is a sleek looking and very effective way to clean the air in your home. Longevity of the air filter will vary depending on the elements in your home, but that is a sign that there is a greater need for it if your filter life seems to go down quickly. However, from my testing so far of several days of running after blowing out a candle, a day of burning leaves smells, and running daily for about 6 hours on schedule in the evenings, my filter life is still at 99% (I do not have pets). This model may be more expensive than others on the shelf, but the quality and features have shown me that you definitely get what you pay for!

If you have a small bedroom or home office and are concerned about the air quality, then you must look into the Blueair Blue Pure 511iMax. I already own the larger 411i Max sister unit in my master bedroom and have been a giant fan. I’ll tell you why! Firstly, the 511iMax is a fairly small unit. It’s nearly the same size as my office wastepaper basket. It stands about 14.5” tall and is about 9.3” round. It’s easy to find an empty spot to place it. The power cord is certainly long enough to get it anywhere. It’s incredibly light – the weight is really at the top in the fan/control unit. The main body is hollow inside, surrounded by filter. The white top / grey lower color scheme is certainly Swedish influenced as mentioned on the packaging. I think this doesn’t blend in any more than it stands out. It’s a good example of a set it and forget it device. Now that it’s been in my office for several days, I don’t even notice it’s there. As for the unit, there are controls on the top of unit in the fan. There are two touch sensitive buttons: power and fan. The fan button cycles through 5 modes: Auto, Night Mode, and 3 different levels of fan strength. As the fan strength increases, so does the volume. At the third and highest level it is for sure a noticeable sound, but frankly not any louder than any other fan running on high. There is a night mode designed to run at the lowest speeds and dim all the lights. As for lights, there’s one to indicate which mode, a dot for wifi status, and on the front of the unit rather than on top is a pill shaped light that changes color for the air quality status: Blue for excellent, green for good, yellow for moderate, yellow for polluted, red for very polluted. The lights, even at their highest settings, aren’t too bad, although at night in a very dark room they ARE noticeable. The lower section of the unit is the filter itself. This consists of both a replaceable filter and a pre-filter cover. They say, depending on the air quality level, the filter needs to be replaced every 6-9 months. I find this to be reasonable. Replacements also come in higher filtration levels. You can purchase replacement filters that filter out more particulate matter. The pre-filter is the grey color fabic you can see surrounding the unit. This can be both vacuumed and washed depending on how dirty it is. It can also be bought and replaced in different colors, should you wish to change up the mood. The big deal with the 511iMax is that it is internet connected. The phone app was easy to set up. If you’ve set up any WiFi connected smart device, the process is pretty similar: you open the app, it connects to the unit via Bluetooth, you tell it the WiFi connection info, and it saves and you’re good to go! The app can control all the features of the device and more. So, you can adjust modes, set a child-mode to prevent button touches from activating, adjust the LED brightness, see your estimated filter life, as well as scheduling and geofencing. The scheduling lets you set the intensity and LED status on any recurring schedule. I set it to automatically go to night mode in the evening. The Welcome Home geofencing mode lets you put it into standby when leaving and returning to your house. It’s a neat feature, but I just let mine run at auto at all times. The app is also great for letting you see charts of your air quality. This includes every internet connected Blueair filter you have as well as outdoor air quality statistics. If you thought what happens outdoors doesn’t effect the indoors, think again! I have this filter in my office, a space I spend a lot of time in, as well as my dog. This space has poorer air circulation than the rest of the house, so this has been fantastic at keeping both the staleness of unmoving air, plus the inevitable smells of middle aged man and dog. If you’re wondering if I’ve actually noticed a difference, the answer is a resounding yes! You can not only look at the color light to see the activity, but if it’s on auto, you may hear the fan level rising as it cleans the air. Candles in the office don’t alter anything, but a hit off a vape pen or my wife using copious amounts of hairspray in the other room will set it off! And, at least one time, my dog did expel some flatulence right in front of the machine, and as hoped for, the air quality went down and it started to clean the air! I don’t have much in the ways of downsides, but I do want to clarify some potentially misleading information in terms of what size room this filter can handle. According to BlueAir itself, the recommended room size for this filter is “up to 193 square feet.” That’s not to say you can’t put it in a larger room – but the larger the room, the longer it could take to clean spaces. In this case, 193 square feet can be filtered through in 12.5 minutes, 460 square feet in 30 minutes, and 920 in an hour. Franky, I’m not 100% sure what the real negatives are for those longer times. I’m making an assumption that it’s really a matter of reducing smells and particulate matter quicker. That said, I’m of the mindset to stick to the recommended max room size in hopes of the best efficiency. This is my second Blueair air filter and I’m a fan for life. If you’re unsure of air filters, please be rest assured that it DOES work and DOES make a difference. If you’ve a space that’s a little stale, a little smelly, or needs the air to just be a bit cleaner for your health, you owe it to yourself to check out the Blue Pure 511iMax!

I am a big fan of the BlueAir purifiers. They really do a great job. My home office is always locked when I am not using it for security. It becomes musty and stale. This is the perfectly sized air purifier for my space. My office space is completely refreshed in 12 minutes on the high setting. The unit is always on auto setting unless I want a quick refresh. It runs quietly on low and you can dim the lights to a low setting. The app will also indicate filter life and you can control the fan speed on the app or the unit itself. There is also a welcome home feature that can track you and adjust your purifier based on your scheduled arrival. I have used that feature in the past but don’t like the tracking permissions. The HEPA filtration system works well. The activated carbon filter lasts about 9 months. That is pretty standard with all of the BlueAir purifiers I have owned. The pre-filters (fabric dust cover) really help extend filter life. They sell 3 different colors of pre-filters that are fairly neutral. They used to have vibrant colors and I miss them. I am deducting a point because they should include an extra pre-filter in the package. It is nice to swap one while washing the other. You can really smell cleaner air with this unit. Highly recommended.

Since 2020, I’ve come to believe that keeping my air clean is the single most effective thing I can do to stay healthy and reduce the spread of germs. I’ve tried a few different air purifiers over that time, and they all have their pros and cons. I was optimistic that the Blue Pure 511i Max would be a good one, in part because of good reviews from HouseFresh.com . I was not disappointed. My previous air purifier had my particulate sensor at a baseline of around 8 μg/m³, and within a few hours of plugging in the Blue Pure 511i Max it went to 0. Two main things I personally want to see in a purifier: (1) Is it quiet enough that it isn’t annoying to have it running all the time? and (2) can I get replacement filters at a relatively low cost? This purifier is among the best for both criteria. On the lowest setting, this purifier is very quiet, almost silent. It additionally has a very nice air quality sensor built in that facilitates an automatic mode that adjusts the fan speed depending on the presence of impurities to be removed from the air. It works very well, and even on higher fan speeds this purifier is quieter (and effective!) compared to other purifiers I’ve tried. As of now, replacement filters can be ordered for about $25. Blueair actually has a few different filter options available, which is interesting. More advanced filters (e.g. more carbon) are available at a slightly higher cost. The basic filters are among the lowest cost I’ve seen for a purifier this size, which is fantastic. One reason for this is that the purifier is built in such a way that the disposable filter is separated from any plastic frame or support, so there’s the added benefit of minimal plastic waste. The only parts that need to be replaced are the filter fabric itself and the carbon mesh. Additionally, there’s a washable fabric outer filter that helps keep larger dust particles and lint out of the paper filter fabric, which I’m sure will help the filter last longer before it needs to be replaced. In setting up my unit, I had an occasion to contact customer support. They responded within a day and were friendly and helpful. I noticed that some reviews of Blueair purifiers complained that they contain an electronic ionizer that cannot be controlled separately (it cannot be turned off). The Blue Pure 511i Max is the same way. There’s a concern that ionizers can produce ozone, which is not particularly healthy for people and can cause irritation. I felt better about this particular purifier when I saw that it is certified by the State of California indicating that it does not produce a significant amount of ozone. The ionizer seems to be a built-in part of why this purifier does such a good job at keeping the air clean. One final point: this purifier does NOT have a built-in voice assistant. I cannot say anything about its compatibility with Google or Amazon home automation systems since I don’t use them. It does integrate with HomeKit. Normally I would prefer HomeKit compatibility, but when this purifier is set on automatic mode there’s really no need to adjust it ever, manually or through home automation.