Coway are some of the best, and there are many dumb models without internet access at all
replyIf you don't mind the hum of fans, it's hard to beat a Corsi-Rosenthal box... there are kits from cleanairkits.com or cybernightmarket.com to build quiet PC fan based boxes that in my experience work excellent and can use off-the shelf filters and parts
I have a dumb model (1512HH) and it’s excellent.
replya box fan and a furnace filter.
replyIt works really well and even more - it works better than any purifier even if you just duct-tape the filter you have to a box fan.
replyTo people who think this is a joke, it isn't: https://en.wikipedia.org/wiki/Corsi%E2%80%93Rosenthal_Box
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