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All Ontario Residences that contain at least one fuel burning appliance, device, fireplace or an attached garage are required by law to have a Carbon Monoxide Alarm installed. Fuels are natural gas, propane, heating oil, kerosene, coal, charcoal, gasoline, wood or other bio-fuels. Some examples of fuel burning devises: home furnace, space heater, decorative fireplaces, wood stove, kitchen stove or grill, gas/charcoal barbeque, hot water heater, automobile or lawnmower.

Proper placement of a CO alarm is important. The CO alarm must be located adjacent to all sleeping areas of the home to increase the likelihood that sleeping occupants will hear the alarm. Unlike smoke, which rises to the ceiling, CO mixes with air, therefore CO alarms may be installed at any height. However, combination smoke /CO alarms must be installed on or near the ceiling.

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