Air Leakage

Air leakage accounts for the majority of moisture problems in homes. This lesson explains how air carries moisture through wall systems, and outlines the impact of climate differences and HVAC systems on moisture transport.

Learning Objectives

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

• Explain how moisture moves with air
• Summarize how HVAC equipment affects air leakage
• Identify the common pathways of air infiltration in a home
• Distinguish between vapor pressure and air pressure

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