Register For This Free Webinar

Understanding the Ventilation Puzzle

Register for this July 15, 2026 | 2:00 PM ET webinar.

"Build tight and ventilate right" has long been a guiding principle of building science. As homes become tighter and more energy efficient, proper ventilation becomes essential to maintaining healthy indoor air quality, occupant comfort, and building durability.

Yet ventilation remains one of the most misunderstood aspects of residential construction.

Join building science expert Daran Wastchak of Learning Edge for a practical deep dive into residential ventilation systems, indoor air quality, filtration, code requirements, and performance verification. You'll gain a better understanding of how to balance energy efficiency and healthy indoor environments while meeting today's building standards.

You will learn:

  • Why indoor air quality (IAQ) matters and what homeowners expect.
  • The difference between ventilation and air filtration.
  • How to select and size air filtration systems.
  • Determining proper ventilation rates for homes.
  • Air changes per hour and why they matter.
  • Common ventilation strategies for single-family and multifamily buildings.
  • IECC and IRC ventilation requirements.
  • ENERGY STAR, LEED, Indoor airPLUS, and Zero Energy Ready Home requirements.
  • Ventilation testing, inspection, and verification best practices.

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Daran Wastchak 500x500

Daran Wastchak is the President of Learning Edge, LLC, a firm that specializes in residential energy efficiency training and building science consulting. Daran was a key implementer of the EPA’s ENERGY STAR for Homes program for more than 20 years. He has helped solve warranty issues for hundreds of homes that did not properly heat or cool, had high utility bills, poor indoor air quality, and/or were uncomfortable. Daran has trained thousands of individuals on the basics of building science, energy efficiency for buildings, energy efficiency programs, and the international energy conservation codes.  He holds a bachelor’s degree in construction and master’s and doctoral degrees in Public Administration and Policy from Arizona State University.

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