by Mark Hansberger on January 6, 2022December 21, 2021 Find Out Which Air Purification System Works Best in Winter In winter, we typically close up our home and turn on the heating system when temperatures drop. While this can help keep dust out, the indoor air quality may deteriorate due to lack of ventilation. Pollutants such […]Read More Filed Under: IAQ – Indoor Air Quality Tagged With: HEPA– ionic– UVGI