Indoor Environments Association Podcast
Presented by the Indoor Environments Association (IEA), The Indoor Environments Project is the podcast that takes you beneath the surface of radon, vapor intrusion, and indoor air quality. We explore the science, stories, ethics, and standards shaping the built environment—from homes to workplaces and everything in between.
Each month, we sit down with leading experts, seasoned professionals, and sharp thinkers to tackle the industry's most pressing challenges, uncover historical milestones, and imagine what’s next for indoor environmental health.
Whether you're a seasoned professional, policy advocate, or just curious about the air you breathe, this podcast delivers insight, practical knowledge, and a few surprises along the way.
📅 New episodes drop the 4th Wednesday of every month.
Subscribe today and join the conversation on the spaces we live, work, and thrive in.
#IndoorAirQuality #Radon #VaporIntrusion #IEApodcast
Indoor Environments Association Podcast
Beyond the Manometer: Inspecting Radon Mitigation Systems
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Beyond the Manometer: Inspecting Radon Mitigation Systems
A radon mitigation fan is running. The manometer shows pressure. The post-mitigation test came back low.
So, is the system good?
In this episode of The Indoor Environments Project, host Diane Swecker is joined by Bruce Snead, instructor for the NRPP Soil Gas Mitigation Compliance Inspector course, and Greg Johns, a professional home inspector and certified Soil Gas Mitigation Compliance Inspector, to look beyond whether a mitigation system simply appears to be working.
The conversation explores what professionals evaluate during a mitigation system inspection, common deficiencies found in the field, system labeling and monitoring, exhaust and moisture considerations, active versus passive systems, and the important distinction between radon reduction and standards compliance.
Bruce and Greg also discuss how specialized training and mitigation system inspections can support homeowners, home inspectors, mitigation contractors, state radon programs, and the continued improvement of the radon industry.
Earn 1 NRPP CE Credit
This episode is approved for 1 hour of NRPP continuing education credit for NRPP-certified professionals who are IEA members.
After listening, log in to your IEA account, visit Free Education and Exam Study Guides, click COURSES, and select this episode to complete the requirements for your CE credit.
Continue the conversation in Norfolk!
Join us October 4–7 for The Indoor Environments Symposium 2026 in Norfolk, Virginia. Learn more and register at IndoorEnvironments.org.
Guests: Bruce Snead and Greg Johns
Host: Diane Swecker
Producer: Daisy Rezende
Technical Support: Holly
Content Review: Myca Bruno and Duane
The Indoor Environment Project is brought to you by the Indoor Environments Association—advancing science, policy, and professionalism in radon, vapor intrusion, and indoor air quality.
📬 Got feedback, questions, or a story to share? Email us at info@indoorevironments.org!
💡 Subscribe to stay updated on future episodes—and don’t forget to leave a review if you enjoyed the show!
🌐 Learn more about our work at indoorenvironments.org.
Because better air starts with better professionals.
Diane Swecker
Host
Daisy Rezende
Producer
Holly Tabano
Editor
Myca Bruno
Editor
Bruce Snead
Guest
Greg Johns
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