Your ducts are hiding disaster—ammonia you can’t ignore

Mon, 04 May 2026 03:45:47 +0000

Your Ducts Are Hiding a Disaster: Ammonia You Can’t Afford to Ignore When it comes to your home’s indoor air quality, ductwork plays a far bigger role than most homeowners realize. Often buried behind walls or ceilings, air ducts circulate air throughout your space—but what happens when that air carries a silent contaminant? One of the most dangerous yet overlooked threats lurking in your HVAC system is ammonia. ### Why Ducts Are a Breeding Ground for Ammonia Contaminants Your air ducts are designed to move air, not detect toxins. Over time, moisture buildup, improper ventilation, and cleaning deficiencies create the perfect environment for ammonia to form or accumulate—especially in cooling systems where biological growth thrives. Ammonia may originate from: