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Finding cracks in furnance heat exchanger

Jim Mueller
Jim Mueller Member Posts: 8
in THE MAIN WALL
I would like to know what are all the proper ways to check a 20-year-old furnace heat exchanger for cracks? Consumers Energy sent a company (Greater Detroit Heating & Cooling) to check my furnace for a noise it was making from my blower motor. When he was looking at it, he decided that he wanted to check my heat exchanger for cracks. He poured a large amount 4(64oz.) bottles of cold water into a running, hot heat exchanger. Is this the correct way? Do you think doing this would damage or crack the heat exchanger? If you think it would cause a crack please explain WHY or HOW. Your response and any help in this matter would be deeply appreciated.

James M. Mueller

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