UVGI (Ultraviolet Germicidal Irradiation) air purification systems are designed to improve indoor air quality by using UV-C light to inactivate or eliminate organic contaminants. Sterilization in UVGI air purifiers works by drawing air into a sterilization chamber using high-CFM fans, exposing the air to the UV-C light. This light can penetrate and disrupt the DNA or RNA of microorganisms, including bacteria, viruses, and mold, rendering them inactive or eliminating them altogether.