Sources of CO

It’s not just your furnace. Many Ontario households have, on average, 4-6 fuel-burning appliances that produce carbon monoxide.

Most of these sources are associated with malfunctioning fuel-burning equipment and appliances – and poor venting and confined spaces, like a furnace room, garage, cabin, tent, RV, boat cabin or camper.

While carbon monoxide doesn’t have an off-season, it certainly has a major presence in the summer, when many of us are dealing with certain fuel-burning equipment that we use on a seasonal basis.

Of course, the cooler seasons often keep us indoors, and confined spaces, poor venting or limited air-flow also contribute to the CO hazard.

Common sources of Carbon Monoxide

Most Ontario households have, on average, 4-6 appliances that produce carbon monoxide. Can you name a few?

? image of a gas fireplace
image of a gas fireplace

Gas Fireplace

Have your gas fireplace properly installed and inspected to avoid potential fire and CO hazards.

? image of a propane grill
image of a propane grill

BBQ

Never use a gas or charcoal BBQ in the garage. There's always a risk that carbon monoxide will leak into the house, even if the garage door is open.

? image of a clothes dryer
image of a clothes dryer

Gas Dryer

Ensure your dryer's air exhaust vent pipe is not restricted and its outdoor vent flap will open when in use.

? Furnance
Furnance

Furnace

Have your furnace inspected annually by a certified technician to ensure efficient and safe operation.

? image of a hot water tank
image of a hot water tank

Water Heater

Ensure your water heater is inspected annually for safe operation.

? image of a white car
image of a white car

Car

Do not leave your car running in attached garage, even with the garage door open.

Poor maintenance/improper venting

Poor maintenance of these appliances, damaged or blocked venting, or inadequate airflow can cause dangerous levels of CO to build up inside your home, garage, cottage – virtually any enclosed space under certain conditions.