A flue pipe costs $400 to $800 depending on accessibility and the overall length. The flue carries carbon monoxide and any leftover combustion gases out of your home.
How do you replace a furnace vent pipe?
Access the furnace through the door on the furnace closet. Loosen the clamp where the lower end of the vent attaches to the furnace using the screwdriver or nut driver. Pull off the end of the pipe from the flange. Tap the pipe with the hammer, if necessary, to dislodge it and pull it off the flange.
How do you seal a furnace vent pipe?
- Brush away any dirt or dust from the area around the furnace vent that you will be sealing.
- Cut the tip of a caulk tube with a utility knife. ...
- Inject the silicone caulk into the gap between the vent and the side of the house or foundation. ...
- Brush the area to be sealed with a stiff bristle brush.
Why is my flue pipe rusting?
These gases are pushed through the furnace flue pipes and exhausted from the home. When your furnace isn't burning gas as efficiently as it could, there may be more byproducts being created in your furnace than you realize. These byproducts have chemical reactions with your exhaust pipes, causing them to rust.
How do you replace a flue pipe?
- Look over the section of flue pipe you want to replace. ...
- Unscrew the sheet metal screws from the section of flue pipe you wish to replace. ...
- Measure the length of the flue pipe and prepare a replacement piece by cutting a piece of flue pipe to the correct length using your snips.
Why is my furnace exhaust pipe leaking?
It could be that the exhaust pipe is the incorrect size. This could lead to the furnace exhaust cooling down within the pipe, condensing and becoming water vapor, causing a condensation leak. ... Long-term exposure to water vapor can cause corrosion in your furnace exhaust pipe, so it's important to fix any leaks ASAP.Sep 18, 2021