How Do I Know If My Furnace Heat Exchanger Is Cracked?

BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning provides expert advice on this common question for homeowners in Greater Vancouver. If you need professional service, our licensed technicians are available across the region.

When to Call a Professional for Help

While understanding the answer to this question is helpful, some situations require professional expertise. If you are uncertain about any step, if the problem recurs, or if you notice any signs of gas odour, carbon monoxide, or electrical hazards, contact BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning immediately. Our licensed technicians across Greater Vancouver can provide expert diagnosis and repair. We recommend professional service for any issue that involves gas, electrical components, or safety-critical systems.

Related Services from BC Wide

BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning provides comprehensive furnace service across Greater Vancouver, including diagnostic inspections, emergency repairs, scheduled maintenance, and system replacement. Our Red Seal certified technicians service all major brands and carry OEM parts in their vehicles. For emergency service related to this question, call (604) 330-3953.

Answer: How Do I Know If My Furnace Heat Exchanger Is Cracked?

A cracked heat exchanger is a serious safety concern because it can allow carbon monoxide to enter your home. Signs of a cracked heat exchanger include a distinct odour (similar to burning metal or formaldehyde), soot deposits around the burner compartment, visible cracks (detected by a professional inspection), a flame that flickers or rolls out when the blower starts, and carbon monoxide detected near the furnace registers. Some cracked heat exchangers are not visible externally and require a combustion analysis test or camera inspection to detect. If you suspect a cracked heat exchanger, turn off your furnace and call for professional inspection immediately.

Safety Reminder

If you smell gas, suspect carbon monoxide or believe there is an immediate danger, leave the property and contact emergency services or the appropriate gas emergency authority. Do not remain inside — exit the building immediately and call for help from outside.

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