😷 Potential Biological Hazard Found During Inspection During one of our recent inspections, we observed what appeared to be biological growth inside an air handler — a sign of possible mold, mildew, or microbial buildup. This can happen due to moisture, poor ventilation, or lack of regular maintenance, and it can affect indoor air quality and even occupant health. 💡 Tip: Have your HVAC system and ductwork inspected regularly and keep humidity levels in check to prevent microbial growth. At Hud