Carbon dioxide danger levels in your home begain to reach threatening levels around 70 ppm, or parts per million, according to the U.S. Consumer Product Safety Commission.
The carbon dioxide, or CO level in households that contain gas stoves is 5 to 15 ppm, but this number may increase to over 30 ppm if the stove is not properly adjusted. Homes without gas stoves have CO levels of .05 to 5 ppm. A human can withstand prolonged exposure of up to 70 ppm before health problems occur, although heart patients may experience chest pain even at levels under 70 ppm.
When the CO levels in a home hit a dangerous level, or over 70 ppm, flu-like symptoms will occur, such as fatigue, nausea, headache, dizziness and shortness of breath. Unlike the flu, CO poisoning will not present with a fever. When these symptoms occur, you must exit the home, find fresh air, and contact your local fire or police department. CO detectors will alarm at this level.
If a human is exposed to indoor CO levels between 150 to 200 ppm for a prolonged period of time, intoxication can be deadly. Warning signs include mental confusion, loss of consciousness, muscular coordination problems, vomiting and eventually death. Installing a CO detector in every bedroom of the house and in all interior hallways that lead to bedrooms can help prevent exposure to these lethal levels of CO.
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