You want to make sure you are warm this winter if you live in Carterville and across Illinois. Southern Illinois winters can be brutal, so it can be frustrating if your furnace won’t turn on. It’s even more disappointing if you hear the furnace kick on but no warm air comes out.

Every furnace makes a little noise when they are on. It’s hard to tell the difference between good noises and bad noises. These are noises you will want to listen for this winter: