Designed for Mini Split and PTAC HVAC units without any required modification thereto,, QUAD-MS™ produces charged ions in occupied space of homes and commercial buildings. System can connect to any suitable 120, 208, or 240 Vac source and has divergent mounted quad ion emitters. Reducing dust particles, bacteria, smoke, allergens, viruses, mold spores, and related odors, production of negative and positive ions causes particulates to clump together and drop from air.