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3 Words You Don’t Want to Hear about Your Furnace: “Cracked Heat Exchanger”

Ok, we may be a little overdramatic with our headline, but there are some repairs (thankfully, not many), that are problems that need immediate resolution because they can affect you and your family’s safety. A cracked heat exchanger is one of them. The good news is that should you have a cracked heat exchanger in your furnace, the pros from Express HVAC Service can help resolve the problem with expert furnace repair for your home in Georgetown, TX!

What It Is

The heat exchanger is a critical component of your heating system. It resides at the center of your furnace, and is the element heated by the burner so that your home has heat. But the heat exchanger serves a very important safety function as well: it keeps the toxic combustion byproducts generated by your system from entering your home’s air by funneling them directly to your flue and out of your house. But, a cracked heat exchanger will compromise this process.

Why It Happens

The heat exchanger in your furnace expands and contracts hundreds of times throughout its lifespan. It is made of metal, so at some point, after much usage, it isn’t unusual for a crack or cracks to develop. The problem is that even the smallest crack can give the toxic gases inside the heat exchanger, including carbon monoxide, a direct ride right into your living spaces. This is because the warm air that is blown into your home is the hot air on the outside of the heat exchanger, not the inside of the heat exchanger. But a crack will allow toxic gases to mingle with the air that does get blown into your home, and this is why it is critical to replace a cracked heat exchanger right away.