BLUEAIRBlue Max 3450i Smart WiFi Air Purifier Alexa,HEPASilent Combination Filter Up To 103m2 Rooms Removes 99.97 Percent Pollen,Dust,Mould,Bacteria, Viruses,Large Rooms

Very pleased with the quietness of the 511i Max and with its comprehensive app functionality. I wanted a quiet air purifier (my previous Vax was too loud) and did plenty of research before buying. It is delightfully quiet! Hard to hear at all on night mode and on speed 1, audible on speed 2 but sounds like a pleasant breeze rather than the annoying hairdryer-like sound some fans make. Even speed 3, whilst much louder, is not terribly annoying. And the excellent app gives a fully adjustable slider to control the fan speed, not just three settings, so you can effectively set fan speed to 2¼ or 2½ to better control the noise. The app's schedule feature is also excellent, allowing full control over the times and days the purifier will automatically turn on and off, and the mode/speed it will use when it does. The purifier looks very smart and minimalist too, though changing the filter will be more awkward than some air purifiers due to the fabric cover. Overall, really pleased with it and would happily buy again.

I bought this to see if it would help with issues with my eyes and ears. It has more than met any expectations I had. It is easy to set up, quiet on the auto mode and the night mode is so quiet you can hardly hear it - the first night I had it on I though we had left the window open since the air was so clear. I will probably end up buying another one so I don’t need to move it around the house.

Bought it as an Amazon warehouse deal and got a nice unit. Looks pretty in grey fabric. Very quiet on setting one which I normally use overnight and can barely hear it. I used to cough at night - maybe allergy related or dust but since using it the cough is so much better though I can’t prove the two are connected.Little light on the front which changes colour depending on pollutant level. Mine is almost always on blue, the lowest pollution setting.Filter will need changing after a year or so which maybe a problem as I can’t find the correct filter on Amazon or eBay.

Great, instant fresh air. I like the app too where I can see data about inside and outside air quality and set the purifier accordingly.

turned up today, works straight out the box. and on its lowest setting is very very quiet. little to no power usage. bought because we have a Labrador with allergies. its not intrusive in our lounge like some of the other brands could be. filters can be expensive

If you smoke then this is a must ! Best air purifier ever but you need a spare cover I change my one once a week. Covers are easy to wash. Love this as I smoke and it really makes a huge difference my house smells great can’t recommend enough

Bigger than I thought it would be, but works amazingly. ~I've kept it on all the time and the light has always been blue so I wondered how good the indication on air quality actually way - until today when I was cooking downstairs with the doors open and when I came upstairs to where the air purifier was it was working harder (I have it on automatic) and the light was showing green to indicate that the air quality wasn't quite as good as it should be. Definitely worth the money

I used to have a blueair 211, the square one which worked fairly well for about 4yrs until it started making a high pitched whine and the fan blades were clogged with dust with no way to get in there to clean it. So I bought this one. Very lightweight but also had an annoying high pitched sound from the start especially noticable on the first speed.I quickly noticed within days this is useless at keeping dust at bay. My surfaces were thick in a few days whereas my 211 had kept it down despite running on a low speed all the time and this one at speed 2. I suspect the thicker prefilter on this may be the suspect. My nose was still stuffy all the time unlike with the 211.Whenever I needed to reboot my router this purifier would not connect with the app meaning I had to delete it and reset it up again. There's no way to just reconnect in the app itself. At the 3 month mark it refused to connect with the app, it also started having power problems. Suddenly and repeatedly the fan speed would stop for a few seconds with a flashing white light then come back on again. Thankfully Amazon were fabulous and let me return for a refund. I will be purchasing a different brand and I doubt I'll be coming back to blueair anytime soon.