The heat exchanger in the furnace has two jobs: work with the burner to generate heat and separate toxic byproducts of combustion and vent them out. When it becomes cracked or damaged, it fails to perform these jobs, which can be dangerous to those who live in the home.
Knowing there’s a cracked heat exchanger can be difficult, but there are some signs homeowners can keep an eye out for.
- Difference in Flame
A normal flame in the furnace will be steady burning and blue in color. A damaged heat exchanger can make the flame dance around and be more orange or yellow in color. If this is observed, call Diamond Heating and Cooling right away.
- Metal Cracks
With a damaged heat exchanger, cracks can appear in the metal. While a flashlight can detect larger cracks, it is best to have a professional inspect the metal with proper equipment. It could also have excess corrosion or rust developing on the unit.
- Soot Buildup
If the furnace is working properly, there shouldn’t be any soot on or around the furnace’s cabinet. If it begins to build up and discolor the metal, there’s a chance the heat exchanger is cracked.
In some instances, a damaged heat exchanger will manifest itself in a strong, unpleasant odor similar to the smell of formaldehyde. It can cause headaches, and is a good indication there is something wrong in the furnace.
- Carbon Monoxide Presence
A damaged heat exchanger leaks carbon monoxide, which is a byproduct of the combustion process. If the carbon monoxide detector in the home goes off, the heat exchanger might be broken. Call for help immediately and evacuate the home.
Call Diamond Heating and Cooling at 208-378-6624 if any of the five signs listed above are noticed. Whether the furnace has a cracked heat exchanger, or another problem, Diamond Heating and Cooling can make the necessary repairs.