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The Building Science Podcast

by Positive Energy

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Latest episodes

Thermal Truths

October 22, 2026 · 1 hr 9 min

Homes and buildings are more than just boxes filled with air at the right temperature; they are complex thermodynamic environments deeply coupled with our bodies, minds, and emotions. We are lucky to be alive during this time of change in…
The Progress Paradox: How Codes Create Carbon

July 22, 2026 · 1 hr 1 min

An interview with Kelly Alvarez Doran Why do our building codes encourage carbon pollution? How have we landed in a "progress paradox," where older buildings often outperform new ones in both operational and embodied energy? In this…
Demystifying Decarbonization: Data Driven Design

June 18, 2026 · 1 hr 2 min

In this episode, Kristof sits down with sustainability expert Josh Jacobs to demystify the ins and outs of Life Cycle Assessments (LCAs), Environmental Product Declarations (EPDs), Product Category Rules (PCRs) and ISO Standards that are…
Perspectives on Hydronics in the Real World

April 25, 2026 · 1 hr 15 min

An interview with Robert Bean and Lance MacNevin In this episode we unpack the rapidly transforming world of hydronic heating and cooling. We are joined by two seasoned veterans of the industry, Robert Bean and Lance MacNevin. With many…
(Un)Healthy Homes

April 8, 2026 · 1 hr 16 min

An interview with Dr. Eva King Our homes are indoor environments of our own making. These environments exist to make our lives better but often unintentionally expose us to contaminants—chemical and microbial—that harm our health and…

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Our Second PSA, The Humid Climate Conference in Austin May 4th & 5th!

March 23, 2026 · 17 min

The Humid Climate Conference (HCC) is officially back in Austin this May 4th & 5th, and we have a fantastic line up of speakers and topics for our 10th anniversary. It’s time to step away from the Zoom screen and have some live 3D human…
Our Hidden Roommates

February 12, 2026 · 1 hr 4 min

An interview with Dr. Sarah Haines The Indoor Microbiome is the complex, invisible world of trillions of microorganisms living within indoor environments. Its residents include bacteria, archaea, fungi and viruses. We live immersed in this…
Hydronics: The OG HVAC - Part 2

January 27, 2026 · 1 hr 22 min

An interview with Benjamin Jewell. This is Part 2 of our latest series to familiarize our industry with the world of hydronics systems and air-to-water heat pumps. In Part 2 we’re rejoining the conversation to look at controls - the…
Buildings as Habitat: Biodiversity-Informed Investments in Public Health

January 20, 2026 · 1 hr 17 min

An interview with Helena van Vliet. “First we shape our buildings, thereafter they shape us.” - Winston Churchill (attributed) The natural world is humanity's original habitat. This habitat supports our physiological energy efficiency…
Hydronics: The OG HVAC - Part 1

December 23, 2025 · 1 hr 24 min

An interview with Benjamin Jewell. In this episode we are once again diving into the world of hydronics systems and air-to-water heat pumps. These systems are poised to transform how we heat and cool homes and buildings in the US. In this…
Beyond the View

December 1, 2025 · 1 hr 31 min

An interview with Andrew Dryden. Windows are pivotal to the lived experience of a home. They impact the basic aesthetic and provide natural light, views, ventilation, and safety. However, they are also nearly always the largest single…
Cementing Carbon

October 31, 2025 · 1 hr 1 min

An interview with John Mead. This is a crossover episode with the Spring Street Passive House education and advocacy series. Welcome to a pivotal conversation on the future of our built world. The concrete industry, indispensable for…

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About the show

The Building Science Podcast is a show hosted by MEP engineering firm Positive Energy principal Kristof Irwin. The show covers everything from the basics of building science to adjacent scientific disciplines to more fully understand how the built environment shapes our lives as human beings on planet earth.