311i max air purifier | 1858 sq. ft. coverage in 60 mins | 929 sq. ft coverage in 30 mins | Pre FIlter | App connectivity |

Love this! I just started using this a month ago and it's already made a huge difference with the smoke from the wildfires. Prior to setting this air purifier up my home was filled with smoke on low to high air quality days. Now, I don't even notice the smoke until the air quality is high and then the smoke still does not bother me. I purchased this because of other smells from laundry, BBQ's, and dumpsters in the back lane and I seldom notice these anymore. I'm so glad I bought this Blue Air 311 purifier! I have had it on high and it is relatively quiet - almost soothing. I don't even notice it and it does not cause sleep disturbances. Easy to set up and maintain. Well worth it!

The Blueair Blue Pure 311i Max has been a game-changer for maintaining fresh, breathable air at home. It handles heavy pollen seasons effortlessly, cutting down allergy flare-ups noticeably fast. It is equally impressive in the kitchen, quickly clearing out lingering cooking smells and smoke before they spread to the rest of the house. ​The companion app is straightforward, intuitive, and provides accurate, real-time updates on room air quality so you always know exactly what you’re breathing. Between its sleek fabric pre-filter look, whisper-quiet operation on lower settings, and responsive performance. Highly recommended.

The Blueair 311i Max has been a great addition to our bedroom and has dramatically helped air quality having pets and as someone with typical seasonal allergies. Setup was easy and intuitive, and connecting it to the app was straightforward. The design is modern and clean, so it blends into the room instead of looking bulky or industrial. If you are researching air purifiers, it is important to understand how coverage ratings work. The large square footage number is typically based on running the unit at maximum speed and achieving roughly one air change per hour. In practical use, most people run these at lower speeds for noise and filter longevity. For meaningful air cleaning, around 4 air changes per hour is commonly recommended, and if you are more sensitive to allergens you may want even more. These units are designed to clean a room, not an entire home, so sizing appropriately is key. In day to day use, this model performs very well for particulate matter (PM) like dust, pollen, smoke particles, and general airborne debris. Auto mode responds quickly to PM spikes and adjusts fan speed accordingly. On lower speeds it is very quiet and unobtrusive in a bedroom. At higher speeds you will hear airflow, but it is smooth and not harsh. What is nice is that it has a power loss recovery where it will return to its last set mode when power is restored in case of a power outage. One thing that really stood out to me is how much dust, hair, and other allergens the pre-filter alone traps. It is honestly a little shocking and really puts into perspective how important a quality filtration system is. Even with consistent pre-filter maintenance, when I eventually replaced the main filter it was clearly very dirty with trapped particulate matter. That alone justified the investment. For maintenance, you can vacuum the worst of the trapped debris off the fabric pre-filter, but a proper wash is really recommended. Just slip it off, wash it, let it air dry or gently tumble on low, and put it back on. The app will remind you about filter life and maintenance, including pre-filter cleaning, which is helpful. When it was time for replacement, I switched from the standard filter to the Allergen version. I have been happy with its performance, although I did not notice a dramatic difference compared to the standard filter. Moving forward, I may go back to the regular filter depending on availability and cost. Blueair also offers a SmokeBlock option with a higher carbon density if VOC/ odor control is more of a priority. It is worth noting that this unit focuses primarily on particulate filtration. While it will help somewhat with Volatile Organic Compounds (VOCs) over time, serious VOC removal requires a significant amount of carbon or carbon zeolite media, which brands like Austin Air are known for. Something I am considering in adding to further improve home air quality. The app is well done and practical. It shows general PM trends, logs spikes, and allows manual control. Being able to adjust it from bed is a nice convenience. It has an auto mode, night (turns off less) and then 3 manual fan speeds as selectable options on the device. App will provide you with some additional timers options, smart location options to turn device off and on when you leave the home etc and gives a little more granularity to the fan speeds allowing you to dial in a speed that you like. I don't use these all I will usually leave it on Auto or manually set a speed. Overall, if you size it correctly for your space and expectations, this is a well-built, effective room purifier. It looks good, runs quietly, is easy to maintain, and delivers strong particulate performance. I would definitely recommend it for bedrooms or medium-sized living spaces where clean air matters. I am very happy with this purchase!

I purchased this air purifier to supplement a larger Blueair unit (211i MAX) have for cleaning the majority of our 1171 sq ft condo. This purifier sits in the main hallway to cover areas the larger Blueair unit does not. The setup was fast out of the box. Wi-Fi is enabled, so it was just a case of adding it to my BlueAir app on my phone and connecting it to my home network. The device provides detailed air quality readings on the app and can be programmed for on/off schedules, display brightness and air filter life; the latter is important to know when deciding to reorder new filters. Maintenance is quite easy: each month, I vacuum the outer pre-filter and open the unit (turn power off) to vacuum the filter chamber. The app will advise if the pre-filter needs cleaning. There is a geofence option [called 'Welcome Home', to turn the purifier off if you are away at least 3 km and turn it on within the radius. The unit is well-made and does the job and why I purchased a second unit.

I've only had the Blue Air 311i Max for a week but I am so impressed! it is whisper quiet, I can't even hear it and it's right beside me while I'm working on my computer. you can hear the fan on the highest setting but you wouldn't run that setting for long. Good for a larger room space I use it in my living room kitchen open concept and I do notice a difference, especially with the forest fire smoke. it is larger than I thought, I included a picture for reference.