Inspect gas furnace flue pipe
Why it matters
A disconnected or rusted flue pipe allows deadly carbon monoxide gas to escape into the home instead of venting outdoors.
Stop forgetting to do this.
Hearth generates a personalized maintenance schedule so you never miss another inspect gas furnace flue pipe.
How to do it
- 1
Turn off the furnace at the thermostat or breaker for safety during inspection.
- 2
Access your furnace room or attic to view the furnace exhaust flue.
- 3
Inspect the metal flue pipe for visible rust, corrosion, holes, or moisture damage.
- 4
Check that the flue connects securely to the furnace collar or outlet.
- 5
Verify the connection is sealed with furnace cement, not standard duct tape.
- 6
Look for any visible sag or downslope in the horizontal flue sections.
- 7
Trace the flue to the roof to confirm it extends above the roofline.