What is the primary purpose of performing a 'duct leakage to outside' test rather than a 'total duct leakage' test?
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A
To determine leakage from supply ducts only, excluding return ducts
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B
To measure only the duct leakage that directly affects energy loss to unconditioned spaces
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C
To calculate the maximum duct airflow capacity
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D
To identify which specific ducts require replacement