Tuesday, July 22, 2025 @ 3:00 PM

In the quest to build super-insulated, airtight, energy-efficient homes, we may have unintentionally introduced a new challenge: airflow issues so subtle they go undetected - leaving even top HVAC and home performance professionals scratching their heads. The result? Stress, discomfort, and inefficiencies that compromise building durability and occupant health.
This webinar explores the often-overlooked impacts of airflow in, through, and around a home. From bath fans to complex HVAC systems, the mechanical systems we rely on to control indoor environments can actually contribute to pressure imbalances, poor ventilation, and "MAD AIR" - a hidden culprit behind energy waste and comfort complaints. We’ll share insights from a 26-home study, exposing the role of fans, interior doors, and ductwork in disrupting indoor air dynamics.

Learning Objectives:

1. Identify the three primary forces driving air leakage and pressure differences in homes.
2. Analyze real world research on how MAD-AIR affects the homes we service in all the areas of energy use, comfort, building durability, and indoor air quality.

About the Instructor
John Tooley is an award-winning Home Performance and Energy Efficiency Expert who has been involved in the building science world for 40 years. He has been honored with some of the most coveted awards in our industry receiving the EEBA Joule Award for Excellence in Advancing Energy Efficiency in 2006 and being inducted into the Building Performance Institute's Hall of Fame for lifetime commitment and dedication to the Home Performance Industry. He was the 2013 recipient of the Tony Woods Award for Excellence in Advancing the Home Performance Industry.

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