Indoor HEPA filters significantly reduce pollution indoors when outside air unhealthy, study finds

Outdoor air pollution is a major contributor to indoor air pollution -- but high-efficiency particulate air (HEPA) filters used in the home significantly reduce fine-particulate matter in the air compared with non-HEPA air filters, according to a new study.

from Top Health News -- ScienceDaily https://ift.tt/2QXxlev