Napoleon, Barrie, Ont., introduces their virus-killing gas furnace system, which features their HomeShield technology. The HomeShield system is a unique UV-C sanitation system. The ultraviolet light does not occur naturally due to the filtering effect of the atmosphere. Germicidal UV-C light breaks down DNA, damaging and killing viruses and bacteria. The system produces the light within the furnace, to sterilize the air inside. It works silently 24 hours a day as the furnace is heating, cooling, or circulating air.