What standard specifies the fan pressurization method for air permeability determination?

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!

The standard that specifies the fan pressurization method for determining air permeability is ISO 9972. This standard outlines a procedure to assess the airtightness of buildings, which is crucial for energy efficiency and indoor air quality. It provides guidelines for using fan pressurization techniques to measure air leakage rates in various building envelopes.

ISO 9972 is internationally recognized and ensures consistency and reliability in measuring airtightness, facilitating comparisons across different buildings and construction methods. Its focus on the fan pressurization method aligns with current industry practices, making it a vital reference for professionals involved in airtightness testing.

In contrast, the other standards mentioned pertain to different methodologies or aspects of building airtightness or thermal performance, but they do not specifically designate the fan pressurization method as ISO 9972 does.

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