What are some common sources of carbon monoxide in the home or workshop?
Most carbon monoxide produced in homes comes from combustion of fuel for heating and cooking. CO may accumulate in the home when a blocked chimney, broken chimney flue, or damaged furnace heat exchanger allows gases to enter the home. It can also enter the home from the garage when an automobile, lawn mower, or other engine is in operation. Backdrafting chimneys and flues (common when ventilation fans are used in tightly sealed homes) may allow combustion gases, including carbon monoxide, to enter the home. Gas stoves and ranges can produce CO, which can present problems if the appliances are used for prolonged periods or if they are not operated properly. Gas ranges are not intended to be used to heat the home. Some other common sources of carbon monoxide include unvented fuel burning space heaters and indoor use of charcoal for heating or cooking.
