"What we're looking for is when you look at these joints here. We're looking to make sure we don't see rust or soot that might be blowing back into any of these joints," explained Lt. Matthew Hertzfeld with Toledo Fire and Rescue. "At our vents, we want to make sure we don't see any soot, which could mean we could have a problem with our furnace, in addition to any missing panels in our furnace."
Carbon monoxide comes from the combustion of fuels. So if a gas appliance in your home is improperly vented, it can lead to the deadly gas seeping into your home.
"Carbon monoxide issues can also arise with your stove. We don't use stoves for heating, so that's where we will run into a problem if someone is trying to use it for heating," said Hertzfeld.
Fire officials strongly advise installing a carbon monoxide detector in your home. They recommend placing it by bedrooms, where it can wake you if you're sleeping.
"The number one defense to prevent carbon monoxide in your home is to have those regular inspections and services by a company that specializes in that work," said Hertzfeld.