6 Signs That Your Furnace’s Heat Exchanger Is Bad
The heat exchanger in a gas furnace is what transfers the heat that the unit produces to the air that is drawn through it. A heat exchanger is a series of metal tubes that run between the combustion chamber and the exhaust flue. When the unit burns gas, it produces hot combustion fumes that travel through the heat exchanger. These fumes cause the metal to become extremely hot, and this heat then flows out into the cooler air that is forced over the exchanger. A clogged, cracked or broken heat exchanger is the most
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