The dangers posed by combustion appliances are nothing new. People have suffered the consequences caused by improper combustion since people began utilizing fire for warmth and cooking. It's easy to forget -- heating systems and other combustion appliances located indoors need to be installed properly, maintained properly, and vented properly. Our home energy auditors are no strangers to carbon monoxide. We've tested combustion appliances for excessive carbon monoxide levels in hundreds of homes during our home energy audits and the results might surprise you. Excessive levels of CO are more common than you might think, and combined with atmospheric and temperature changes or construction defects that might affect your chimney's ability to exhaust this poisonous gas, potentially more dangerous.
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