A house is a sizable investment that can have a lasting impact on your financial future. For any prospective homeowner, a house is a valuable investment because its value appreciates over time, meaning you can get considerable returns if you decide to sell it. However, this is only possible if you stay on top of maintenance and repairs, including your furnace’s flue.

The flue is a vital component of your furnace because it is responsible for venting harmful gases and smoke away from your home. If your flue is not adequately maintained, it can become clogged and corroded, which can cause dangerous fumes to enter your home and lead to health risks. By extension, your home will also become less energy efficient and may need costly repairs. Few people know how their furnace flue affects their home, so we will discuss the details in this article.

What Causes Flue Damage?

Flue damage can occur for several reasons. One of the most common causes is a buildup of creosote, a byproduct of burning wood. This can cause the flue to become clogged, reducing its ability to vent gases and smoke. Additionally, the flue can become corroded due to moisture and acidic gases, which can cause further damage and reduce the flue’s efficiency. The flue can also become damaged due to extreme temperatures, which can cause it to crack, warp, and even rust.

Signs of Flue Damage

The best way to determine if your flue needs repairs or maintenance is if there are signs of rust, corrosion, leaks or if the outside of it is black in color (not because it was painted black). Rust is a sign of moisture, corrosion, and leaks can indicate acidic gasses are not being removed properly. Additionally, you may notice smoke and odours from the flue, indicating a blockage or other damage. If the flue is damaged, you may also see smoke and soot accumulating around the fireplace or wood stove.

However, it is worth noting that not all signs of rust and corrosion are apparent at first glance, so it may take time before you can resolve the problem.

When to Call a Professional

Although replacing an exhaust pipe is relatively simple, you must remember that a professional should do the job. If done incorrectly, it can cause dangerous leaks in your home and damage your furnace and fireplace. It is best to call a professional to inspect your exhaust pipe yearly. Most company’s will do this when they are in your home for the annual maintenance program. Ensuring your home is safe to continue enjoying.


The furnace flue is vital to your home’s heating system, so it must be in good working order and regularly inspected. Because it is directly connected to the rest of the furnace or fireplace system, it must be properly installed and maintained to ensure your family’s safety. This way, the furnace can safely and efficiently heat your home.

4 Seasons Home Comfort provides top-quality services for furnace repair in Lethbridge. Our professional heating and cooling technicians are equipped with tools and knowledge to ensure your broken furnace is fixed properly. Call us today at 587 813 4421 to schedule a service!