What can be affected if exhaust fans fail to shut off during testing?

Prepare for the ABAA Whole-Building Airtightness Testing Level 1. Master the concepts with various study materials including flashcards and practice questions. Get ready to ace your exam effortlessly!

When exhaust fans do not shut off during testing, the pressure differential outcomes are significantly affected. During a whole-building airtightness test, maintaining the appropriate pressure differentials is crucial for obtaining accurate measurements of air leakage. Exhaust fans create additional air movement, which can skew the results by altering the pressure levels within the building. This interference can lead to incorrect assessments of how much air is leaking into or out of the building envelope, ultimately affecting the reliability of the test results.

While noise pollution levels, overall air quality, and temperature stability might be affected in broader operational contexts, the primary concern during the specific testing procedure is the impact on the pressure differentials. Ensuring the proper environment for the test to accurately measure airtightness is essential, and any uncontrolled variables like running exhaust fans can compromise this crucial aspect.

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