How to Repair a Furnace Flue If you notice your home is not heating properly, or your heating bill has recently increased, you may need to examine your furnace and flue. Your furnace’s exhaust stack, also known as the flue, vents fumes and carbon monoxide safely away from your home’s interior as you heat your home. Over time, the galvanized metal will rust and corrode. If you notice rust forming, this could be a sign that you need to replace your furnace flue. If left untreated, you can risk leaking smoke and dangerous gases into your home. Replacing a flue is a complicated process that should only be attempted by an experienced handy worker. A mistake during the replacement process could result in toxic gases entering in your home’s interior. ACT Heating and Cooling recommends using a licensed professional for the most critical and large-scale home improvement projects. However, if you are confident in your skill set, here is how to replace your furnace flue. What you need to know: How to Tell If Your Flue Needs to Be Replaced Before You Begin Your Flue Replacement: Removing the Old Flue Cut a New Piece to Length Push the Pipe [...]