Coway Airmega 150 vs Coway Airmega 250

“Damn, I literally got the Airmega 250s yesterday from Amazon and found this exact issue with the fan. I am also debating whether to return it or not (Amazon does not offer to replace it for some reason, only return is possible and price went up today by like $100). In level 1 and 2 speed, all is fine, no vibration at all. Though at level 3, it does vibrate/shake slightly but nothing out of ordinary. I am a bit sensitive to noise so always run it at level 2 max I guess. Do your guys think it will really cause issues in the long-run? The warranty is 3 years. P.S. Just want to avoid the hassle of packing everything up again and maybe get a replacement that has the same issue :/”

“So the bad news here is that the AirMega 150 moves around half the air of the other two. It has no onboard ionizer (which many consider a good thing), and it has green-HEPA medical grade filter with antimicrobial properties, so that's a plus, but it DOES move less air. It's quieter and looks nicer, but the CADR doesn't lie. In this case I'd advise to get the Levoit. I'm NOT a Levoit fan - in fact, I think they're generally a garbage company. But in this case it's CHEAPER, moves more air, has quite a good HEPA filter, and a carbon grid (which neither of the Coway models here do). HOWEVER, turn off the stupid smart features and cover the light when you get it. The air quality meter is a lie, the smart features just make it work worse. Turn it on, leave it on, and it'll be fine.”