Investing in a decent air purifier is a good idea for those who suffer from allergies. The Coway Airmega 250S is an app connected air purifier that can remove 99.999% of nano-sized particulate matter down to 0.01 micrometers. It has a LED bar that lets you know how clean or dirty your indoor air is.
This air purifier has 7 fan modes, including sleep, and eco. It has a noise rating range of 22 to 54dBA depending on mode. The Coway Airmega 250S air purifier can cover a space of 930 square feet.