We make an annual reminder at the start of the cold season to have your furnace and heating sources checked to prevent chimney fires or carbon monoxide poisoning. We also remind you to check batteries in your carbon monoxide detectors when you change your clocks.
But we know sometimes things happen anyways. Would you know what to look for? What symptoms you might be experiencing to know you should call 9-1-1?
Be safe!
Original source can be found here.