BLUEAIR Air Purifiers for Bedroom, HEPASilent Air Purifiers for Home, Air Purifiers for Pets Allergies Air Cleaner, Smart Air Purifier, Small Room Air Purifier, Virus Air Purifier, Blue Pure 411i Max

I purchased two of these Air Purifiers in April of last year (currently February, ~10 months later) and am extremely pleased with the results and effectiveness of the product.I live in Brooklyn, NY in a railroad style apartment (one side facing street near-ish a busy road, the other side facing an interior courtyard) and I purchased two 311i Maxs. One is in the the threshold between the kitchen/living area and bedroom area and the other is in the main "bedroom" that faces the street. The threshold between rooms is high traffic, so lots of dust and particulates get swept around when I walked between the rooms of the apartment. Immediately I noticed that the dust accumulation in the living and bedroom area became much more gradual. The purifier itself also traps a TON of dust clumps on the cloth outer filter that needs to be cleaned periodically but I am happy to know that it is certainly doing its job. The bedroom purifier also is doing well, but its a much lower traffic area of the apartment so it doenst need to be cleaned as often.The advertised filter live is 6 months. However, after 10 months the high traffic air purifier's filter is just about at 15% and I purchased a replacement. For context, I run it constantly at its lowest setting and have it automatically adjust to a medium high setting for two hours each evening from 5-7pm (this is usually when I am cooking and honestly, not even sure if this is necessary). I am extremely impressed with the durability of the filters in this capacity.Noise wise, I couldn't be happier. They certainly have gotten marginally louder over time (likely due to filter age) but really not bad at all. My (aging) refrigerator's cool cycle is louder than these things. I'm an audio engineer so I use my ears for a living and am particularly sensitive especially when I am working or trying to go to sleep. Not only is the purifier's noise imperceptible from more than 10 or so feet away, but I have on running all day in my studio where I work and I don't have to turn it off except to record exceptionally quiet sources. To be fair, this is all on the lowest setting. The higher settings are certainly noticeable, but about the same volume as my Mideas air conditioner.The app also works great. When there was renovations happening in the apartment below mine, I was able to periodically check in on the particulate levels while I was out for work and adjust the purifiers intensity as needed to make sure no unwanted drywall or wood dust settled in my apartment. The indicators on the units are helpful as well to see the air quality change when cooking or lighting...erm "incense" and know that the purifiers are doing their job and keeping the house clean and odor free. You can have the filters auto-set depending on particulate levels but honestly, they work so fast at the lowest setting I rarely find myself manually upping the intensity of the fan unless there is a serious cooking/smoke mishap or something similar. You're probably better off just keeping them on low 90% of the time.Recommend these to folks all the time as I do to you, dear reader.

We've had multiple versions of the 400 series Blue Air Filters over the years, and while they have continuously updated the product, this latest version was a substantial improvement. They added an app which is actually very well designed and provides useful controls and additional info (versus many product apps which simply do the same thing as the controls on the product itself). It works very well with Alexa. Finally, they clearly listed to customer feedback. One frustrating aspect of much earlier models was the fact that there was a light on the product that you could not turn off when it was on (I placed a large coin on it every night to block the light). It was annoying in a bedroom where you wanted total darkness. More recent versions of the 400 series had the light turn itself off after a few seconds - presumably folks had complained and to their credit they made an obvious improvements. This newest version finally gives you full control over the light (not just on/off, but full 1-50 intensity variation). I don't usually write product reviews, but I was really impressed with how much an already good product was improved upon - all for pretty much the same price adjusted for inflation as when I bought it a few years back. Highly recommend this product.

Based on the amount of dust that my home gets in just a few days, I always wondered if that is one of the reasons one would get sick or maybe just congested. For peace of mind plus thoughts of unknown air toxins, I purchased this air purifier. So far, I only once saw the gauge hit 2% and that was while I was using a blow dryer near it as I dried my hair. Other than that, it remains on 0% whenever I glance at it. It is located right next to my bedroom door, so I glance at it multiple times a day. Outside my bedroom door is a hallway with 3 other bedrooms plus a bathroom and a flight of stairs going to the lower level. This air purifier seems to be doing its job on the top floor of my home. The filter is also hanging on to 80% and I've had it for 3 months. If I calculate this correctly, I might have to change the filter 1 time a year; give or take! I also like that it has a low volume hum which is not annoying and actually is comforting when going to sleep! It is a good buy and I do recommend it, for at the least, giving you peace of mind!Update: 5 months later...2 things occurred since purchase... 1. Somehow, I couldn't re-establish the wifi, but eventually, I figured it out and reconnected.2. This one is the most important....I was downstairs cooking short ribs for a large family gathering. Haven't used my oven for a while and I opened it to check the ribs and a medium puff of smoke came out from cheese at the bottom of the oven that was slowly burning. I didn't think anything of it, until a 1/2 hour later when I went upstairs for something, the Blueair was churning at a much higher number then the normal 0%!! I thought there was something wrong with it! Then realized, the smoke had traveled from one corner of the house to the total opposite side going up the stairs and into my bedroom. It was not visual, but apparently the Blueair could "see" it and it was churning away until the area was purified, once again! Even our smoke alarms didn't go off, so it was really a minimal amount of smoke, but Me and Hubby were really impressed! Recommend this to anybody and everybody!!