IKEA - FÖRNUFTIG

They are excellent. Very quiet, on low I can only hear it if I get close and listen carefully. I leave it on while sleeping, can't hear it in bed. Makes a big difference in dust levels and to my dust allergy. Wake up with clear airways instead of stuffed.

The IKEA ones are great from an upfront and running cost POV. FÖRNUFTIG will do a bedroom, it'll need to be on at least setting 2 to be effective. Similarly the 'COWAY' unit posted below is a long established company in this space, which means you'll not struggle for filter replacements in the future from either them or IKEA. As others' have said, letting in outside air is good for any smell that may be from damp - however, that isn't always the best idea depending where your apartment is - especially if you live near a busy road as you're adding different problems. Probably the very best thing you can do is buy an air quality monitor - birdie (copenhagen) do a great one that is a binary 'bad / good' air quality - [https://www.birdie.design/](https://www.birdie.design/) \- the gold standard (which also gives you detailed reports) is the AirThings linked to below as well. And work out what the actual issue is; VOC, CO2, PM10/2.5 If its VOC or CO2 - windows are the answer, if its PM10 (dust)/PM2.5 Pollution - air filters are the way forward.

Not much. Easiest explanation is this. So HEPA filters are tighter. Which ofc means that it catches more particles in one go, but EPA12 filters, because they are looser than HEPA, can pass more air through its filters. So for the same given power output, you are cleaning more air - and in each pass, EPA can also catch almost the same stuff that HEPA catches, but at lesser amounts (but it gets more passes of air for the same power output). There's quite a lot of discussion between HEPA and non-HEPA filters in this sub itself if you are interested in a more thorough reading, but the essense is, unless you are building a hospital style clean room, HEPA is probably overkill anyways. I own multiple units of the Uppatvind that I keep in multiple small rooms. They work great for small rooms, bringing the AQI way down. I also have one Starkvind for my living room since its bigger and it does the job. I don't have the table version though but its essentially the same thing - so if you want an airpurifier but anyways also want like a side table, then its a good idea. So if you are buying an Ikea air purifier, I'd either recommend the small uppatvind or the big starkvind and I'd recommend staying away from their mid size variant fornuftig. That one is in my opinion way too loud at the highest setting for what its worth.

I’ve had good results with the FÖRNUFTIG and a replacement ESPhome enabled circuit board. Seems to well enough for pollen and smoke particles, and with ESPHome it can be controlled remotely, including fan speed.

I’ve had great results so far using the IKEA FÖRNUFTIG purifiers with a replacement PCB running ESPHome. Low cost to set up, the units are visually unobtrusive, and integrates reliably into Home Assistant. They’ve been great in spring/summer for pollen and winter for smoke particles.

For microplastics, a standard hepa (preferably hepa 13) air purifier oversized for the room should suffice. Although not specifically designed for microparticles, hepa apparently does quite well against them anyway. The thing to keep in mind, however, is that no filament in molten state is "non-toxic". Although PLA is really only somewhat toxic with VOC emissions, when you use the printer in a smaller space like a bedroom, the VOC level can accumulate more easily, making it much less savory. To filter VOCs, you at least need a filter with a carbon basket instead of just a "carbon layer". Check out the ikea fotnuftig, Levoit Vital 100, or Winix has a few models as well that include a carbon basket filter. Here in my part of the US, Walmart carries the vital 100. It's like $130 or something, but it's a quick option that's probably sufficient.

If you are a tinkerer, embedding an ESP32 in an IKEA Fornüftig is pretty straightforward. It's also one of the best price/quality filters on the market and the replacement filters aren't particularly expensive. 

I have nom smart purifiers from IKEA (FÖRNUFTIG and UPPÅTVIND) connected to a smart power outlet. Works pretty well and losing the power doesn't lose the selected speed.

Just to conclude, I bought IKEA air purifier with Carbon Filter yesterday. I hope this will be good enough. Thanks

I like it. As with some PLA brands, occasionally my Air quality detector beeps occasionally as they give PM2.5 a bit more for some seconds and with this purifier running at 1st speed (silent completely) don’t let the detector beep anymore.

Yes I noticed for sure

I use an IKEA FÖRNUFTIG with the carbon filter installed.

IKEA FÖRNUFTIG. $60. Works. Next question.