How to Inspect Your Flue Pipe

Knowing how to inspect your flue pipe is an important component of furnace maintenance every homeowner should know. The flue pipe is a component of a home heating system, both for space heating and water heating when gas is used. The flue pipe safely vents exhaust and combustion byproducts out of the home, ventilating operations.

The flue pipe’s function is for ventilation. It allows harmful byproducts to exit the home, preventing occupants from being exposed. The flue pipe works to prevent accidental fires from starting.

What is a flue pipe made out of?

Flue pipes are made from metal – metal is fire resistant. Flue pipes are often insulated. The flue pipe runs up to a chimney in most applications, allowing exhaust gases to travel easily to the exterior of the home.

How to inspect your flue pipe

  • Remove the flue cap to check for blockages such as debris or birds’ nests.
  • Replace and secure the cap tightly to the end of the flue pipe. This cap prevents birds, debris, and other items from moving into the flue, blocking it.
  • Look for signs of blockages by examining the pipe itself – water streaks or rust on the flue pipe may indicate a blockage, causing moisture to back up. Soot near the furnace is another sign of a flue blockage.

HVAC techs show you how to inspect your flue pipe

If you are unsure how to inspect your flue pipe, ask your trusted heating and cooling company for assistances. Your technician will inspect your flue pipe during seasonal preventative maintenance for your furnace – ask your technician to show you how to inspect your flue pipe for future reference, so you can do this step yourself between maintenance visits.