2 January 2020
When your gas furnace heats up your home, it creates byproducts of combustion that are routed out of your house through a vent pipe called the flue. These gases can be harmful if they accumulate in your home. One of the gases created by your furnace is carbon monoxide. Since it's vented away, the gas doesn't pose a danger, but if there's a leak in the flue, dangerous carbon monoxide could accumulate around the furnace and spread through your home.