There are plenty of affordable air purifiers on the market. The problem is, they are often of dubious quality or too small to perform in a medium-sized room. The BlueAir Blue Pure 411i Max is a ...
your air purifier should be equipped with a High Efficiency Particulate Absorbing (HEPA) filter. "These filters can remove up to 99.97% of small airborne particles, including dust, pollen ...