Coroner's Finding: PEARCE Heather Diane

47y · Female·Carbon monoxide toxicity

A 47-year-old woman died from carbon monoxide toxicity while showering in a bathroom equipped with a non-compliant, unflued instantaneous gas hot water heater installed circa 1996. The heater, at least 45 years old when installed, lacked required hood, funnel and flue connections mandated by regulations. Testing revealed dangerous carbon monoxide levels (960-2880 ppm). The metal plate blocking the heater's exhaust opening prevented proper combustion and flue gas expulsion. Clinicians should recognize that carbon monoxide poisoning requires high clinical suspicion in unexplained collapse; post-mortem examination revealed the cause. Public education about gas appliance compliance, professional installation, and regular servicing is critical to prevention.