Controlling Air Infiltration

All totaled, air leakage in homes accounts for between $13 and $15 billion dollars a year in energy losses from U.S. homes. This lesson outlines the specific impacts of air leakage on energy usage in homes, and details how that leakage can be effectively controlled.

Learning Objectives

At the conclusion of this lesson, you will be able to:

• Explain why a tight house performs better than a drafty house
• Identify the key details in a properly performing weatherization system
• Describe the benefits of a properly detailed weatherization system
• Evaluate the air-sealing performance of different wall systems
• Explain how to test the tightness of building enclosures and duct systems

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