It's an industry standard: if a furnace has a cracked heat exchanger, it gets replaced. The American Gas Association has even put this in writing - they say "Any visible crack or hole is reason for ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DENVER — Over 400 people die every year in ...

Although the combustion analyzer doesn't measure them, proper ventilation/infiltration air, sufficient combustion air, and a safe heat exchanger are critical to ...

Let us begin by saying there is absolutely no known technique for finding a crack 100 percent of the time. Probably the best is to visually locate a crack. However, particularly in modern 80 percent ...

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