Passive House Podcast
Interviews with the leaders, practitioners, and change-makers in the global Passive House movement. A production of Passive House Accelerator.
Episodes
In this episode of The Passive House Podcast, host Jay Fox talks with Andrea Michael, an architect from Love Schack Architecture in Bozeman, Montana. They discuss Andrea's comprehensive home retrofit, aimed at improving energy efficiency and comfort. The retrofit included air sealing, adding insulation, installing a heat pump, ERVs, solar panels, and more. The conversation highlights Andrea's journey from initial DIY effor...
In the twelfth episode of The Reimagine Edit series of the Passive House Podcast, host Zack Semke shares selected clips of insights from Jake Bruton, Ben Bogie, Michael Ingui, Ed May, Kristof Irwin, and Ashley Wisse.
This episode explores how practitioners across the Reimagine Buildings Collective are evolving the language and practice of high-performance building—shifting the focus toward health, comfort, and durability; t...
In this episode of The Passive House Podcast, host Mary James speaks with Kara Haggerty Wilson, Design Director at Onion Flats. Kara discusses the company's focus on scaling up deep energy retrofits. She highlights their journey from initial projects in Pennsylvania to more extensive work in Massachusetts, including the challenges and successes of projects like the 130-year-old Hano Homes retrofit. Kara shares insights on ...
This week on the Passive House Podcast we welcome Ben Walsham, the founder and director of ARKATA, based in Brunswick, Victoria. Trained in architecture and now a registered NatHERS Accredited Energy Efficiency Assessor, Ben empowers architects—as well as homeowners, builders, and developers—across Australia to create homes that are not only energy‑efficient, but comfortable, healthy, and resilient
With a backgroun...
In this episode of the Passive House Podcast, Ilka Cassidy and Kristof Irwin are at PhiusCon 2025, highlighting key sessions and interviews with industry experts. The conference explored a variety of themes including performance, purpose, and the power of community in the Passive House movement. Key takeaways included insights on air tightness, ventilation, innovative financing models, and the challenges and successes in s...
In this episode of the Passive House Podcast, Matthew Cutler Welsh talks with Matthew Crucifix, Director of Development at Stonewater, they discusses the organization's efforts in providing affordable and sustainable housing in the UK. Crucifix outlines Stonewater's expansive reach, managing around 40,000 homes, and their current focus on retrofitting existing homes to improve energy efficiency. Highlighting the financial ...
In this episode of the Passive House Podcast, Mary James and Ilka Cassidy interview Tony Lisanti, managing director at Integral Building and Design and QA/QC Manager for Phius. The discussion delves into various rating systems for high performance and passive houses, focusing on the HERS rating method, its standards, and applications. Tony explains his extensive experience in the energy and engineering fields and how he pr...
In the eleventh episode of The Reimagine Edit host Zack Semke strings together some pearls of wisdom from leading Passive House experts across three continents and include Martín Comas, Ed Ettinger, Lindsey Love, Joe Lstiburek, Tomas O’Leary, and Shefali Sanghvi. Each gem is selected from a conversation that took place inside the Reimagine Buildings Collective, either during one of the Reimagine Tuesday interviews or a Fri...
In this episode of The Passive House Podcast, join Jay Fox and Mary James as they dive deep into sustainable building systems with Greta Tjeltveit, a Building Science Consultant at 4EA Building Science and Board President of Passive House Northwest. Greta shares her inspiring journey from researching post-Katrina rebuilding efforts in high school to her current role, discussing her experiences and insights into the evolvin...
In this episode of The Passive House Podcast, join Ilka and Jay for their in-depth discussion with the members of the Reimagine Buildings Collective's innovative Summer Labs. The episode showcases the experiences and insights of various industry professionals who participated in these member-led groups. Featuring Paul Heron, Randall Anway, Lauren Shadid, Valerie Amor, Sandra Lester, Fabrizio Maso, Buck Moorehead, Lloyd Alt...
In this episode of The Passive House Podcast, Mary James interviews Az Rashid Head of Design at Barratt London. Az shares details about Barratt London's focus on large-scale, mixed-use, residential-led regeneration projects within London, and their collaboration with Transport for London (TfL) to develop properties near transit lines. He discusses his journey from architecture to his current role and explains Barratt Londo...
In this episode of the Passive House Accelerator Podcast, Ilka Cassidy and Mary James are joined by sustainability experts Amy Cornelius, Paul Thompson, and Joe Messier as they delve into a groundbreaking retrofit project in Philadelphia. This six-part demonstration series, hosted by Green Building United, examines a project aligning with the new Phius REVIVE standard and the Living Building Challenge core principles. List...
In this episode of the Passive House Podcast, co-hosts Jay Fox and Mary James speak with Gaelen McKee, Founder of Brooklyn Solar Works. They dive in to the company's origins, current projects, including work with co-ops and commercial buildings, and their plans for expanding into ground-mounted solar installations. Galen also touches on the impacts of tariffs, permits for residential batteries, and the future of whole-home...
In this episode of the Passive House Podcast, Matthew Cutler Welsh interviews Jessica, a high-performance building consultant at Climate Shore in Adelaide. They discuss Jessica's transition from energy efficiency compliance to specializing in high-performance building with a focus on mitigating moisture risks. Jessica emphasizes the importance of proper construction practices and ventilation in preventing mold, touching on...
In this episode of the Passive Hosue Podcast, Zack Semke welcomes Michael Quast, the new CEO of Passive House Canada. Michael shares his diverse background in construction, business development, and media, emphasizing his passion for sustainable building. They discuss Michael's journey to Passive House Canada, his experience with straw bale construction, and his focus on fostering collaboration and breaking down silos with...
In this episode of The Passive House Podcast, Mary James interviews Stephen O'Shea, head of Sustainable Construction at Carin Homes. Steven discusses the company's focus on large-scale residential projects, their commitment to Passive House standards, and the significant benefits for residents. He shares his journey from architecture to sustainable design, training strategies for implementing these standards, and the ecolo...
In this tenth episode of The Reimagine Edit, host Zack Semke weaves together insights from a month of dynamic conversations inside the Reimagine Buildings Collective—including AMAs and Reimagine Tuesday interviews. From practical moisture control strategies to the latest in embodied carbon policy, from the efficiencies unlocked by design-build to the evolving role of materials in Passive House, this episode showcases a spe...
In this episode of the Passive House Podcast, Matthew Cutler Welsh sits down with Arthur Lee to discuss his background in architecture and his work in promoting energy-efficient buildings in New Zealand. Arthur shares his experience with passive house design at Tim Green Architects and his current role at Queenstown Lakes Community Housing Trust. Lee highlights the trust’s mission to provide affordable, high-quality housin...
In this episode, Matthew shares a compilation of voices from the recent THRIVE 25 Passivhaus Conference held in Melbourne
Alex Slater
Alex is the founder of Building Physics Pty Ltd, where he combines deep technical expertise with a passion for climate-responsive design. With a background in engineering and years of experience in thermal and hygrothermal simulation, Alex is committed to improving building performanc...
In this episode of the Passive House Podcast Jay Fox talks with Ace McArleton of New Frameworks about building with straw-insulated prefab panels, creating inclusive workspaces in the trades, and launching the Seed Collaborative to scale low-carbon construction through shared knowledge and collective action.
https://www.newframeworks.com/
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