A building analyst discovers a cracked heat exchanger in a forced-air furnace. Which action is REQUIRED before leaving the property?
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A
Tag the unit and advise replacement within the next heating season
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B
Notify the occupants of the risk and recommend they shut down the furnace immediately
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C
Seal the crack with high-temperature silicone and retest
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D
Note the finding in the report and include a photo for documentation only