Blueair - Pure 411

I have a 411 and it died (wouldn’t run, connect to anything, blinking red light). Their customer support was very bad, multiple times just stopped responding to me until it was out of warranty. Because I had old case numbers they eventually admitted it was broken and reported within warranty and replaced it, but I wished I’d’ve got it from Costco so I could just return it there instead. 

I love my BlueAir too. I have the 411 model, it works very well in my bedroom.

Another vote for Blueair. I’ve had a 411 and two smaller ones running continuously for a few years now and they help with dust, dander, and lessening mildew. The app is pretty cool. The soft white noise is perfect for sleeping. Plus I run HVAC filtration every hour.

Their CADR is in cubic meters per hour, where most purifiers specify CADR in CFM (cubic feet per minute). Multiple this by about .59 to change to CFM, so it's claiming \~250 cfm. (It's actually 264.) Most air purifiers at this price point (the blueair 411/511, the levoit core 200s) have a CADR of 100-150 CFM. 100 is actually sufficient for the room size (160 square feet) you're mentioning. If it's too good to be true and there's no information about them anywhere, then it usually is :)

I mean.... I mentioned the part about them having no reviews and being at a sketchily low price point of 1/2 to 2/3 the cost of everyone else. There are really only a handful of air purifier brands that have demonstrated reliability, affordability, and effectiveness over several years, and don't dabble in post-apocalyptic/steampunk decor -- coway, levoit, blue air, winix. If you want to pay more, there's iq air, alen air, and a few others. For $110, you could have bought a blue air 511 and almost a 411, a levoit 300, almost a Levoit Vital 100s, or a Winix a231. The winix 5500, the coway 1512, levoit vital 200, and the blueair 311 are all at this CADR, but for closer to $200.

Another vote for BlueAir. I particularly appreciate that it’s a toddler-friendly design (some models have child locks, all are lightweight with no pinchy controls) and that the outer filter is washable preserving the inner filter for not-dust. I have a mini and several 411 (older versions and one newer i+). Zero complaints after years of heavy use in a city with smoke season and plenty of traffic soot.

I have a BlueAir 411 in my bedroom and an Ikea one for my home office. We replaced an older Honeywell in the bedroom and noticed the BlueAir does a better job and cost much less overall for the filters. The Ikea one is admittedly pretty bad but it was really cheap (although the cost of the filters has gone up now and it's barely cheaper than the BlueAir).

I keep mine on 24/7, I have an older 'dumb' model and they recommend changing it every 6 months. The newer smart models say they can monitor the unit (via an app) and get the filter to last up to a year.

This. I have a winix 5500, two blue air 411s and two coway airmegas and the coway is my favorite by far.

I use two different ones: Winx C545 (Costco) and Blueair 411 (Amazon). The latter one served as the forced-air exhaust on my old DIY litter box.

I have a blue air 411a that i got for a steal. I've seen on here they can have issues later on but after a year, it's doing ok. It's pretty solid but you have to make sure to keep your home clean and dust free. I ended up switching back to a bagged vacuum and dust twice a week. An air purifier won't help if you aren't preventing dander build up too. Edit to add: i only paid $70 for it new. You'll probably want to invest in a better model that circulates air more often.

Blue Air is great. The nice thing is most of their residential models offer a washable outer layer and the box includes a second so you can wash one while using the other. This helps catch a lot of big stuff and I change the inner filter only annually. OP - no purifier removes all dust. Cleaning the source of dust is always the most effective. Still, an air purifier, especially oversized for the room and run at a good speed (I do max overnight and just a tad slower in the day) helps get the remainder.

We have the 211 Max and we also have the classic 405. I have a tiny 411 in my office.

I like BlueAir because they’re quiet and I can buy after market filters in bulk for cheap. Been running a 211 (kitchen/family room) and 411 (bedroom) continuously without turning them off since 2020 and both still operate as new. The air filter taped to the back of a box fan works really well too but is very loud even on the lowest setting. I’ve used this method before I got the BlueAirs when we were dealing with real bad wildfire smoke here in California.

I have a Blue Air 411. I was waking up with a sore throat for over a year. Had the idea to run the purifier in our room at night and my sore throat is gone!

BluAir (Swedish) is what we used in the middle east.