Any fuel-burning appliance that is not adequately vented and maintained can be a potential source of carbon monoxide, including:
- Gas appliances (furnaces, ranges, oven, water heaters, clothes dryers, etc.)
- Fireplaces, wood and coal stoves, space heaters
- Charcoal grills, automobile exhaust fumes, camp stoves, gas-powered lawn mowers, and power tools
The most common sources of carbon monoxide accumulation in the home include:
- Blocked chimney opening
- Improperly operating fuel burning appliances
- Disconnected, corroded, or blocked appliance vent pipes
- Cracked furnace heat exchangers