A combustion byproduct formed by incomplete combustion of carbon based fuels such as oil, propane, natural gas, and wood.
Carbon monoxide is produced by the incomplete combustion of fuels.
It occurs when there is not enough oxygen mixed with fuel. All fuel burning appliances have the potential to produce CO in varying concentrations. CO can result from improperly vented or malfunctioning combustion appliances such as furnaces, stove, and hot water heaters. After being inhaled, CO is absorbed into the bloodstream, taking the place of oxygen in the blood cells forming Carboxhemoglobin. Extended exposure to low or brief exposure to high levels of CO will lead to unconsciousness or death.