Coway is one of the better air purifier brands and has great filters but I had this earlier, moves the least amount of air in the entire Coway line-up. not recommended. Get airmega 150 atleast, can be bought for ~13k on deal. Also always record unboxing videos of anything remotely expensive (subjective). I have received used coway air purifiers from Amazon before.Coway AirMega Aim Professional Air Purifier for Home at 9k with Citi card. Lightning deal is 84% claimed but still.