Carbon Monoxide Awareness Week

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Carbon Monoxide Awareness Week

November 1 - November 7, 2022

As part of Carbon Monoxide Awareness Week, happening November 1-7, the Township of South Glengarry and Emergency Services Department is reminding residents about the risks of carbon monoxide and the important steps to take to avoid exposure in their homes. Carbon monoxide alarms are required in all Ontario homes that have a fuel-burning (wood, oil, natural gas, propane) appliance, fireplace or an attached garage.

This includes appliances that produce carbon monoxide such as furnaces, water heaters, stoves, dryers, barbeques, portable heaters and generators. All fuel-burning appliances should be inspected regularly by a certified technician to check for leaks and ensure there is no build-up of carbon monoxide.

Symptoms of exposure to carbon monoxide may be similar to the flu but without the elevated temperature. Known as the “silent killer,” exposure to carbon monoxide can cause headaches, nausea, dizziness, breathlessness, collapse, loss of consciousness and death.

What is CO?

CO is known as the silent killer because it is an invisible, tasteless and odourless gas that can be deadly.

CO is produced when fuels such as propane, gasoline, natural gas, heating oil or wood do not burn completely in fuel-burning appliances and devices such as furnaces, gas or wood fireplaces, hot water heaters, stoves, barbeques, portable fuel-burning heaters and generators and vehicles.

Prevent CO in your home:

  • Ensure fuel-burning appliances, chimneys and vents are cleaned and inspected annually. Visit to find a registered contractor near you.
  • Check that all outside appliance vents are not blocked.
  • Gas and charcoal barbeques should only be used outside, away from all doors, windows, vents, and other building openings. Never use barbeques inside garages, even if the garage doors are open.
  • Portable fuel-burning generators should only be used outdoors in well-ventilated areas away from windows, doors, vents and other building openings.
  • Ensure all portable fuel-burning heaters are vented properly, according to manufacturer’s instructions.
  • Never use the stove or oven to heat your home.
  • Open the flu before using a fireplace for adequate ventilation.
  • Never run a vehicle or other fueled engine or motor inside a garage, even if the garage doors are open. Always remove a vehicle from the garage immediately after starting it.

Know the symptoms of CO:

Exposure to CO can cause flu-like symptoms such as headaches, nausea, dizziness, as well as confusion, drowsiness, loss of consciousness and death.

If your CO alarm sounds, and you or other occupants suffer from symptoms of CO poisoning, get everyone out of the home immediately. Then call 911 or your local emergency services number from outside the building.

If your CO alarm sounds and no one is suffering from symptoms of CO poisoning, check to see if the battery needs replacing, or the alarm has reached its "end-of-life" before calling 911.

Know the sound of your CO alarm:

  • Your CO alarm sounds different than your smoke alarm. Test both alarms monthly and make sure everyone in your home knows the difference between the two alarm sounds.
  • Don’t be confused by the sound of your CO alarm’s low-battery warning. Follow your CO alarm manufacturer’s instructions so you know the difference between the low-battery warning, the “end-of-life” warning and the alarm alerting you to the presence of CO in your home.

For more CO safety tips, visit the Office of the Fire Marshal and Emergency Management’s website and

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