25i

The "not Hepa" thing is really not that important, and I think some technicality. As Levoits still do an excellent job filtering the air. It just might take a few seconds longer or some such. As even running it on different speeds can sometimes determine if it's officially that threshold or not. If

Here In US we don't have Phillips so much, so I've never had one, although they do some popular/common in posting in here and are probably OK. I have multiple Levoits though and love them. As for being quiet in sleep mode you might want to look at th Levoit unit sprout, that is more for a nightstand

Hmm, but you didn't explain any of that in your main post ? As it sounds like smoke/VOCs are a bigger issue than your main post indicated. So firstly, I would look at the vents. As you are sharing air via vents in an apartment. (Mine is an older place with a smelly carpet...but no charges vents/no s