Project Description: HVAC duct cleaning and disinfecting involves physically removing built-up dust, debris, and allergens from your heating and cooling systems using high-powered vacuums, followed by applying chemical biocides or sealants to kill remaining mold or bacteria and prevent future microbial growth. Inspect, clean, and sanitize ventilation systems. It outlines specific requirements to remove dust, mold, and pathogens, ensuring optimal indoor air quality and system efficiency.