Passive House Podcast

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast co-host's Jay and Mary chat with Emily Mottram, founder of Mottram Architecture, about her architectural firm and her passion for building science and low-carbon residential architecture. Emily discusses her firm's focus on retrofits and new builds, explaining their approach to sustainable architecture using eco-friendly, bio-based materials. She shares insights on the complexity and importance of retrofitting existing structures, the challenges and benefits of panelized construction, and the holistic methods she employs to ensure the health and safety of building occupants. 

https://www.mottramarch.com/

Best of Retrofit: https://events.ringcentral.com/events/reimagine-buildings-retrofit/registration

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of The Passive House Podcast host Mary James meets with Katie Schwamb, Managing Director at Building Energy Exchange (BE-Ex) to  discuss emissions reduction and compliance with Local Law 97 in New York City.  Local Law 97, sets carbon emissions limits for buildings over 25,000 square feet to help achieve near-zero emissions by 2050. Mary and Katie cover the importance of strategic planning, financial incentives, and challenges building owners face in complying with the law. Katie highlights Building Energy Exchange’s array of resources aimed at advancing energy-efficient, decarbonized buildings, including case studies, retrofit playbooks, and their Local Law 97 calculator.

https://be-exchange.org/

Best of Retrofit: https://events.ringcentral.com/events/reimagine-buildings-retrofit/registration

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 efforts to a full-scale renovation, revealing significant energy savings and improved indoor air quality. The episode also touches on the challenges and successes of integrating sustainable building practices in Montana.

https://loveschackarchitecture.com/

See Andrea December 5th at Best of Retrofit: https://events.ringcentral.com/events/reimagine-buildings-retrofit/registration

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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; tackling the realities of partial retrofits; leveraging modeling for better design decisions; and exploring radiant cooling and geothermal systems. Together, they offer a grounded perspective on how builders and designers can communicate value, raise standards, and accelerate the movement toward better buildings for all.

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 navigating site-built versus panelized solutions, the importance of detailed building scans, and the evolving interest in deep energy retrofits among developers. The conversation also touches on technological advancements and the complexities of integrating new systems into old structures.

https://www.onionflats.com/
https://passivehouseaccelerator.com/events/101-deep-energy-exterior-retrofits?date=2025-11-05

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 background in residential architecture and on-site building, Ben witnessed first-hand the pressing need for better performance in homes. This inspired his transition into sustainability consulting and ultimately to launching ARKATA in 2023.

ARKATA’s mission reflects Ben's philosophy: “Uncover the power of sustainability” through a human‑centered lens, where efficiency measures translate into tangible comfort and wellbeing for occupants.

https://www.linkedin.com/in/ben-walsham-104188148/

https://linktr.ee/arkata.au 

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 scaling up Passive House projects. 

https://www.phius.org/phiuscon

Thank you to Ikon Windows for sponsoring this episode of the Passive House Podcast!  https://www.ikonwindows.com/

 Thanks to  Jennie Eber, Tom Bassett-Dilley, Kai Fast, Sayo Okada,  Beth Campbell, Beverly Craig, Kazumasa Tsushima, Daiji Sato, and Alexander Gard-Murray for joining us!

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 challenges and solutions, including government grants and their in-house subsidy pot. He also delves into the specifics of their Passive House projects, like Cherry Grove, emphasizing the goal of building homes that are affordable, energy-efficient, and environmentally friendly. The conversation concludes with insights into the future of housing in the UK, stressing the importance of sustainable construction methods and energy resilience.

https://www.stonewater.org/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 provides certification services for numerous federal and state programs. He further details the process of becoming a HERS and Phius rater, emphasizing the importance of early engagement in the project, thorough QA protocols, and consistent communication between designers and raters. The episode also highlights case studies, including a modular senior housing project and a panelized straw system, illustrating the complexities and benefits of these high-performance building standards.

https://www.phius.org/

https://integralbuilding.com/

https://collective.reimaginebuildings.com/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 Friday AMA. Speakers explore how to encourage clients to pursue Passive House certification, how to better condition and dehumidify hot and moist climates, ways to improve kitchen ventilation, some tips for using natural materials, and more!

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 evolving fields of green building, building science, and Passive House design. They also explore topics such as the importance of early testing in Passive House projects, challenges of ventilation systems in the Pacific Northwest, and the impacts of wildfire smoke on indoor air quality. Don't miss this engaging discussion on the latest trends and innovations in sustainable architecture and Passive House certification.

 Join Greta this Wednesday:  https://passivehouseaccelerator.com/events/101-balanced-ventialtion?date=2025-10-01

https://collective.reimaginebuildings.com/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 Alter, Mark Attard, Rainger Pinney, and Mike Fowler.

https://collective.reimaginebuildings.com/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 London's recent commitment to building all new homes to Passive House standards, including the anticipated benefits for residents and the environment. The episode covers their methodical approach to training, research, and development to achieve Passive House certification, as well as their plans to begin delivering Passive House homes by 2029.

https://www.barratthomes.co.uk/new-homes/london/

Reimagine Building Massive Impact (Sept 19): https://events.ringcentral.com/events/reimagine-buildings-massive-passive/registration

https://ukphc.org.uk/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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. Listen as they discuss the integration of these standards, the challenges of retrofitting row homes, and the educational impact of their collaborative series. Discover key takeaways, innovative approaches to sustainability, and the surprising synergies between these certification programs. Tune in for an insightful exploration of how theory meets practice in sustainable building retrofits.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 electrification in New York City.

https://brooklynsolarworks.com/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 the challenges of getting builders and homeowners to adopt better practices. She highlights the relevance of Passive House standards and her involvement in promoting building science in Australia. 

https://www.linkedin.com/in/jessica-allen-esd/

https://www.climasure.com.au/

https://www.endurobuilders.com.au/

https://building-sciology-poddie.podcastpage.io/?v=lfcm

https://www.instagram.com/building.sciology/

https://www.instagram.com/building.sciology/

https://www.tiktok.com/@building.sociology

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 within the sustainability sector. This episode highlights the importance of engaging both the building community and consumers to promote high-performance, energy-efficient buildings. 

https://www.passivehousecanada.com/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

https://passivehouseaccelerator.com/articles/passive-house-helping-shape-state-energy-codes

https://passivehouseaccelerator.com/podcast/passive-house-podcast-ep-36-robyn-wark-bc-hydro

https://passivehouseaccelerator.com/podcast/passive-house-podcast-encore-ep-robyn-wark-bc-hydro

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 ecological measures taken on building sites. The episode also covers the need for public education on Passive House and previews an upcoming conference in collaboration with the Passive House Trust.

https://www.cairnhomes.com/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 spectrum of expertise shaping climate-ready buildings. Tune in for perspectives from Cameron Caja, Jacob Racusin, Josh Salinger, Jesse Thompson, and  Melissa Furukawa, and get inspired by a community working together to raise the bar for performance, resilience, and impact.

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 housing with a focus on energy efficiency, detailing their incremental improvements and the importance of sustainable design.

https://www.qlcht.org.nz/

Sian Taylor's appearances:
https://passivehouseaccelerator.com/podcast/passive-house-podcast-ep-25-sian-taylor-team-green-architectshttps://passivehouseaccelerator.com/articles/threepwood-passive-house-sian-taylor

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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 performance across Australia’s diverse climates. His work supports architects, builders, and certifiers in delivering Passive House and low-energy buildings that excel in comfort and resilience.
🔗
buildingphysics.au

https://www.linkedin.com/in/alslatz/ 

https://buildingphysics.au/

Elrond Burrell
 Elrond is a Director at via architecture, a specialist firm known for designing low-carbon, high-performance buildings. A seasoned advocate for Passive House in Australasia, Elrond brings over two decades of international experience, particularly in large-scale public and residential projects. He is a vocal thought leader on sustainable architecture and a mentor to many in the built environment sector.
🔗 
via-architecture.net

https://www.linkedin.com/in/elrondburrell/ 

https://via-architecture.net/

Ben Sinclair
 Ben is a co-founder of Basehaus, a practice focused on delivering energy-efficient, beautiful buildings through Passive House design. With a background in carpentry and design, Ben is hands-on in every stage of the building process. He champions a practical, collaborative approach that blends craft and performance to create healthier, smarter buildings.
🔗
basehaus.com.au

https://www.linkedin.com/in/benasinclair/ 

https://www.basehaus.com.au/ 

Kylie Mills
 Kylie is a sustainability advocate and Director at Blukube Architecture, with a mission to create homes and buildings that are people-focused and future-ready. Her work centres on promoting healthier indoor environments and low-impact living, drawing on both Passive House and broader sustainability frameworks. Kylie is a regular speaker and educator in the field of regenerative and sustainable design.
🔗
Blukube Architecture on LinkedIn

https://www.linkedin.com/in/kylie-mills-sustainabilityadvocate/

https://www.linkedin.com/company/blukube-architecture/about/

Elena Cazacu
 Elena is the Director of Evissa, a specialist provider of SIPs and high-performance building systems for Passive House and beyond. With a strong focus on prefabrication and building envelope innovation, Elena is at the forefront of the shift toward smarter, faster, and more sustainable construction in Australia. She is a passionate advocate for Passive House education and systems-based thinking.
🔗
evissa.com.au

https://www.linkedin.com/in/evissa-sips-passive-house/ 

https://evissa.com.au/ 

Linden Thorley
 Linden is an Architect and certified Passive House Designer dedicated to regenerative and climate-conscious design. Operating his own studio, Linden applies a holistic and collaborative approach that respects both people and place. He is a strong advocate for Passive House as a key tool in providing better outcomes for his clients.
 🔗
lindenthorley.com.au

https://www.linkedin.com/in/linden-thorley-8b448a308/ 

https://www.lindenthorley.com.au/ 

A big thanks to Andy Marlow and Talina Edwards from Envirotecture who made it possible for Matthew to attend this year’s conference in Melbourne, Australia and thanks to Cascadia Windows and Doors for sponsoring this week’s episode.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

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/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, Mary James speaks with Barry McCarron, Managing Director of Kore Retrofit, about Ireland’s bold retrofit efforts and Passive House leadership. Barry traces his journey from building the world's largest Passive House Premium project to leading cutting-edge retrofit initiatives through Kore’s one-stop shop model. He shares insights into his PhD research on radon in certified Passive House buildings, the significance of airtightness and ventilation, and Ireland’s ambitious retrofit targets. 

https://www.koreretrofit.com/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this ninth episode of The Reimagine Edit, host Zack Semke weaves together insights from the Reimagine Buildings 25 conference and a month of rich conversations inside the Reimagine Buildings Collective—including AMAs, Reimagine Tuesday interviews, and the post-conference after party. From the growing momentum behind high-performance prefab to timeless lessons in quality craftsmanship, scale, and impact, this episode captures the spirit of a community pushing forward together. Tune in for voices from across the industry sharing what it means to build better—at every level.

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

On this episode of the Passive House Podcast join Michael Ingui as he chats with the NYSERDA Buildings of Excellence Round Five Award winners. From groundbreaking Passive House projects in Manhattan, Buffalo, and the South Bronx to deep retrofits and adaptive reuse in Brooklyn and beyond, we hear from architects, developers, and engineers driving high-performance, low-carbon buildings across New York State. With a focus on community impact, design excellence, and climate resilience, this episode captures a pivotal moment in the evolution of sustainable architecture.

Buildings of Excellence Website: https://www.nyserda.ny.gov/All-Programs/Multifamily-Buildings-of-Excellence/

Project featured in interview excerpt #1 with Curtis + Ginsberg Architects: Kissena House

https://www.nyserda.ny.gov/All-Programs/Multifamily-Buildings-of-Excellence/Winners/Kissena-House

Project featured in interview excerpt #2 with Forward Development and Line 42 Architecture: 1707 Hertel Ave – buffalo

https://www.nyserda.ny.gov/All-Programs/Multifamily-Buildings-of-Excellence/Winners/1707-Hertel-Ave

Project featured in interview excerpt #3 with Alloy Development and Thornton Tomasetti: 475 State Street

https://www.nyserda.ny.gov/All-Programs/Multifamily-Buildings-of-Excellence/Winners/475-State-Street

Project featured in interview excerpt #4 with Curtis + Ginsberg Architects: Seneca West 110th Street

https://www.nyserda.ny.gov/All-Programs/Multifamily-Buildings-of-Excellence/Winners/Seneca-West-110th-Street

Project featured in interview excerpt #5 with Curtis + Ginsberg Architects: 77 William Street

https://www.nyserda.ny.gov/All-Programs/Multifamily-Buildings-of-Excellence/Winners/77-William-Street

Project featured in interview excerpt #6 with Ettinger Engineering Associates: Powerhouse Apartments

https://www.nyserda.ny.gov/All-Programs/Multifamily-Buildings-of-Excellence/Winners/Powerhouse-Apartments

Project featured in interview excerpt #7 with ZH Architects: Building 10 Bio-Based Passive House

https://www.nyserda.ny.gov/All-Programs/Multifamily-Buildings-of-Excellence/Winners/Building-10-Bio-based-Passive-House

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, hosts Mary James and Ilka Cassidy sit down with Kristina Held, principal and founder of Held Architecture. Kristina shares her fascinating path through architectural education in Serbia, Germany, and the U.S., and how that global experience shaped her approach to Passive House. From humidity challenges in the Carolinas to adaptive reuse and detailing with precision, Kristina offers deep insight into designing for performance, comfort, and climate resilience.

https://www.heldarch.com/

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of The Passive House Podcast, Mary James sits down with Parlin Meyer, Managing Principal of BrightBuilt Home, and Chris Lee, Head of Design & Development at Backyard ADUs, for a deep dive into the growing world of accessory dwelling units (ADUs). Together, they explore how prefabrication, modular construction, and progressive policy shifts are reshaping the housing landscape in the Northeast and beyond. From multigenerational living to zoning reforms and cost challenges, Parlin and Chris share insights from the front lines of ADU design and delivery—what’s working, what’s not, and where this crucial housing type is headed.

https://www.brightbuilthome.com/

https://backyardadus.com/

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, Jay Fox and Mary James talk with Lisette Wong and Jack Esterson of Think! Architecture & Design to explore the award-winning Malcolm Shabazz Harlem Plaza project. Learn how this project blends community heritage with Passive House sustainability in Harlem. Lisette and Jack share their journey to Passive House, the project’s innovative design features—including advanced HVAC, daylighting with large operable skylights, green roofs, and PV systems—and the deep community impact of creating year-round space for market vendors and residents alike.

https://www.think-arc.com/

Reimagine Buildings '25 https://passivehouseaccelerator.com/events/reimagine-buildings-25

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this eighth episode of The Reimagine Edit (TRE) series of the Passive House Podcast, host Zack Semke shares selected clips of insights from Ed May (bldgtyp), Nakita Reed (Quinn Evans), Tessa Bradley (Artisans Group), Bev Craig (MassCEC), Mike Steffen (Walsh Construction), Lisa White (Co-Executive Director of Phius), and Jonsara Ruth and Allison Mears (leaders of Healthy Materials Lab).

Quotes:

Jonsara Ruth:
 "If everybody knows a little bit more, we actually have the ability to steer things in the right direction."

Alison Mears:
"We have to be hopeful. We have to be vigilant. And we have to use our practice for good."

Ed May:
"These things are really hard to disentangle... they work together as a whole system."

Nakita Reed:
"We’re on the same team, but here’s what we’re trying to go forward."

Tessa Bradley:
"You're making the rules of your own game."

Bev Craig:
"The more educated and experienced they were, the lower the premium was."

Mike Steffen:
"We're doing it to create room in the budgets… to pull the better buildings off."

Lisa White:
"We’re trying to be… a shield and a sword against climate change."

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast Mary James and Jay Fox chat with Sarah Lewis, Research and Policy Director at the Passivhaus Trust. They explore Scotland’s groundbreaking push toward mandatory Passive House standards for new buildings.  Sarah dives into the motivations behind the proposed legislation, lessons from Germany and Brussels, and the vital role of embodied carbon. She also explores the practical implications—from fuel poverty and ventilation standards to supply chain readiness and the challenge of scaling EnerPHit retrofits. With clarity and passion, Sarah unpacks how policy can drive meaningful change in the built environment.

https://www.passivhaustrust.org.uk/

Reimagine Buildings '25 https://passivehouseaccelerator.com/events/reimagine-buildings-25

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, Matthew Cutler-Welsh talks with Sharon Robinson of Smart Living Spaces. Sharon shares her journey from standard design work to advocating for high-performance, affordable housing. She talks about how rethinking client communication, redefining “standard plans,” and focusing on building science fundamentals like heat recovery, passive design, and smart construction systems can shift the industry.

https://www.smartlivingspaces.nz/

Reimagine Buildings '25 https://passivehouseaccelerator.com/events/reimagine-buildings-25

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast Architect Nat Madson and structural engineer Lauren Piepho of HGA join us to talk about Barry Mills Hall and the John and Lile Gibbons Center for Arctic Studies—Bowdoin College’s first mass timber buildings and the first of their kind in Maine. They share the story behind the design and construction, from early ideas sparked by the college’s pine-filled campus and carbon neutrality goals, to navigating mass timber systems, embodied carbon, and the buildings’ architectural dialogue with campus history.

Barry Mills Hall and the John and Lile Gibbons Center for Arctic Studies: https://hga.com/projects/bowdoin-college-barry-mills-hall-and-center-for-arctic-studies/
Bowdoin College’s case study of the project: https://www.bowdoin.edu/news/2020/pdf/furthering-mass-timber-construction---hga---consigli---bowdoin-college-22.pdf

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the hosts Mary James and Jay Fox sit down with Vincent Bergeron, an architect with Equipe A Architects in Quebec, to explore The Monarch—a groundbreaking social housing project in Sherbrooke. With 134 units guaranteed affordable for 35 years, this high-rise development is notable not only for its scale but for its ambitious pivot toward Passive House principles. Van shares how a tight timeline, a challenging site, and a collaborative team led to innovative choices in prefabrication, envelope design, and energy efficiency. Hear how a late-stage decision to pursue Passive House certification helped shape a healthier, more resilient living environment for low-income families, all while keeping costs in check.

https://equipea.ca/

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this seventh episode of The Reimagine Edit (TRE) series of the Passive House Podcast, host Zack Semke shares selected clips of insights from Jessica Grove Smith (Joint Managing Director of Passive House Institute), Mark Attard, Rainger Pinney, John Loercher, Galen Staengl, Mike Fowler, Cait Eggers, Sean Velez, Nidhi Shaw, and Lloyd Alter.

Quotes:

"Walking off the ferry in Seattle and ashes falling out of the sky—that changes your perspective. The same thing with the heat dome and with COVID. These events over the last seven to eight years have reshaped how I think and approach design and architecture, and now my focus is on resilience." — Mike Fowler

"If you touch any one single component, make sure you go all the way. That’s the only way you’re going to future-proof your building and have a long-lasting carbon emission impact." — Jessica Grove-Smith

"It’s very clear that what typologies get built follow where there’s grant money. Developers are happy to build anything as long as it comes with a little extra funding—that’s a powerful lever we can use to shape the built environment." — Rainger Pinney

"In Passive House buildings, humidity changes very slowly. That just observation applies in any climate—you’re less affected because the air isn’t running through your building like it does in most buildings." — Galen Staengl

"We should be retrofitting schools rather than demolishing them. Roofs, windows, and wall cladding can be replaced; we don’t need to demolish the whole school to make it better." — Nidhi Shah

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast we are joined by Mark Anderson a Registered Master Builder, Licensed Building Practitioner, and Certified Passive House Tradesperson based in Wanaka, New Zealand. Mark founded MA Building in 2013, driven by a commitment to craftsmanship, sustainability, and innovation in residential construction. Growing up on building sites alongside his father, Mark developed a deep respect for the trade, which he now channels into creating high-performance, architecturally designed homes. His passion for Passive House principles stems from a desire to build healthier, more energy-efficient homes for future generations. 

Connect with Mark Anderson:

Website:mabuilding.co.nz

Instagram:@mabuilding_wanaka

PHINZ Directory:M A Building Wanaka

Resources Mentioned:

MA Building Blog:Why I Chose Passive Homes: The Real Story

Passive House Institute New Zealand:passivehouse.nz

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

This week on the Passive House Podcast, Jay and Mary welcome Shannon Pendleton, of Source 2050 and Sanderson Sustainable Design, to share her insights from the massive International Builders Show (IBS) in Las Vegas. From electrification trends to American-made high-performance windows, Shannon breaks down where the building industry is headed and how Source 2050 fits into the evolving landscape of sustainable building.

Source 2050 -https://source2050.com/

What is Good Wood?(article) -https://passivehouseaccelerator.com/articles/what-is-good-wood-form-follows-forest

RB25 - https://passivehouseaccelerator.com/events/reimagine-buildings-2

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, Mary James and Jay Fox dive into passive leisure centers and indoor pool design with Jessica Grove-Smith, Senior Scientist and Joint Managing Director of the Passive House Institute. Jessica shares the story of how PHI began exploring high-humidity building typologies, the unique challenges of designing ultra-efficient recreation centers, and the lessons learned from pioneering projects in Germany and the UK—like the groundbreaking St. Sidwell's Point. From airtightness to evaporation reduction, this is Passive House design at its most dynamic.

https://passivehouse.com/

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this sixth episode of The Reimagine Edit (TRE) series of the Passive House Podcast, host Zack Semke shares selected clips of insights from Carmel Pratt (Massive Passive AMA); Graham Irwin and Silas Patlove (Duck Curve Friday AMA); Lloyd Alter (Sufficiency First AMA); Sara Kudra, Bev Craig, Rainger Pinney, Kristof Irwin, and Alexander Gard-Murray (BuildingEnergy Boston Recap); Ilka Cassidy and Greg Leskien (PH Panelization AMA); and Andrew Peel (Passive House Modeling AMA).

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, Mary James sits down with Hugh Pearce, architect and Passive House lead at the UK-based firm Architype. Known for trailblazing sustainable educational design, Architype is behind landmark projects like the UK’s first Passive House secondary school. Hugh shares insights into the London Docks Secondary School—an ambitious, airtight, biodiversity-rich oasis in the heart of London’s urban density. Tune in for a deep dive into Passive House design for schools.

https://www.architype.co.uk/

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast Ilka is at McGill University for the Reconstruct Workshop, a workshop bringing together students, researchers, and industry leaders to tackle the future of deep energy retrofits. Ilka sits down with emerging voices from architecture and engineering to unpack prefab innovation, the Single Integrated Manufacturing (SIM) model, and real-world pilot projects aimed at decarbonizing existing buildings. It's a behind-the-scenes look at how the next generation is shaping retrofit strategies that are scalable, sustainable, and socially impactful.

https://aeechair.research.mcgill.ca/en/initiatives/the-reconstruct-initiative

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast Matthew Cutler-Welsh sits down with Joseph Lyth an Associate Registered Architect, Certified Passive House Designer based in New Zealand. Joesph walks Matthew through his decision to build a passive house to create a healthier environment for his family.  Believing that healthier, lower energy and affordable buildings are possible for everyone in New Zealand, at standard budgets. 

Lower Saddle Passive House Tāhekeroa: https://nzgbc.org.nz/case-studies/lower-saddle-passive-house-t%C4%81hekeroa

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this special episode of the Passive House Podcast Ilka Cassidy is joined by Kristoff Irwin of Positive Energy at NESEA's BuildingEnergy Boston '25.

Ilka and Kristoff are joined by the following inspiring speakers and organizers of NESEA 25:

They dive in to the conferences main take aways, lessons learned, and calls to action.

Speaker links:

https://www.newframeworks.com/

https://carbonleadershipforum.org/

https://www.vtrural.org/

https://www.prismdesignlab.org/

https://positiveenergy.pro/
https://positiveenergy.pro/building-science-podcast

Ilkas call to action resources:

https://www.echo-project.info/

https://www.greencommons.net/peer-networks

https://www.climateheritage.org/

https://www.mep2040.org/

https://nesea.org/about-buildingenergy-bottom-lines

http://massdesigngroup.org/work/research/bio-based-materials-collective

https://www.buildersforclimateaction.org/

https://se2050.org/

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this fifth episode of The Reimagine Edit (TRE) series of the Passive House Podcast, host Zack Semke shares selected clips of insights from Ryan Abendroth (how to get into PH consulting), Michael Ingui (how to sell Passive Hosue), Kristof Irwin (paradigms in high performance building), and Tom Bassett-Dilley (retrofits and embodied carbon).

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, Mary James and Jay Fox sit down with Tonje Wold-Switzer, Executive Director of the Santa Cruz County Long Term Recovery Group. Tonje shares her personal journey of losing her home, navigating the recovery process, and advocating for fire-resilient, sustainable rebuilding solutions—including Passive House design. Tune in for insights on disaster response,  and how communities can prepare for future wildfires.

How This Family Rebuilt Their Home Stronger after Wild Fire video: https://youtu.be/becjK7WMNXA

Santa Cruz County Long Term Recovery Group:https://www.santacruzcountyca.gov/OR3/Recovery/LongTermRecoveryGroup.aspx

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this fourth episode of The Reimagine Edit (TRE) series of the Passive House Podcast, host Zack Semke shares selected clips of insights from Andrew Michler (fire hardening), Tim Lock (designing beyond Passive House), Ed May (modeling), and Michelle Jacobson and Maria Lomanto (healthy interiors).

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this third episode of The Reimagine Edit (TRE) series of the Passive House Podcast, host Zack Semke shares selected clips of insights from Skylar Swinford (modeling); Ed May, Lois Arena, and Marine Sanchez (Passive House consulting); and Mary James and Steve Quarles (fire resilience).

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this second episode of The Reimagine Edit (TRE) series of the Passive House Podcast, host Zack Semke shares selected clips of insights from Dan Whitmore of Blackbird Builders and Sara Bayer of Magnusson Architecture and Planning.

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, we welcome Barry Cope, Group Managing Director of the Building Compliance Testers Association (BCTA). Barry shares insights into airtightness testing, certification, and how the UK became a leader in 100% blower door testing for new buildings. He discusses the role of ATTMA, the evolution of the industry, and how airtightness impacts building performance, moisture control, and energy efficiency. 

The Building Performance Hub: https://www.bcta.group/tbph/
The Building Performance Hub Podcast: https://www.bcta.group/tbph/tbph-podcasts/

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, Matthew Cutler-Welsh sits down with Kirstie Wulf of Shelter Building Design. Based in Australia’s Blue Mountains, Kirstie shares how she built her own hempcrete home, the benefits of this natural material, and how it stands up to fire, floods, and extreme weather. If you’re curious about sustainable building, passive house principles, or just love a great career change story, this one’s for you!

https://shelterbuildingdesign.com.au/

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, we sit down with Chef Chris Galarza—founder of Forward Dining Solutions, co-founder of EcoChef, and author of Understanding the Green Industrial Revolution—to explore the powerful intersection of food, sustainability, and energy efficiency. Chris shares his journey from skeptic to advocate for kitchen electrification, highlighting how induction cooking transforms commercial kitchens by improving air quality, reducing costs, and boosting efficiency. We dive into his groundbreaking cooking demonstration for the U.S. Congress, the hidden economics of electrified kitchens, and how chefs can lead the charge toward a more responsible and sustainable future.

https://forwarddiningsolutions.com/ecochef

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, Mary James and Ilka Cassidy sit down with Michael Marsh, Principal of Sidekick Architecture in Los Angeles. Michael shares his journey into architecture and Passive House design, discusses the challenges of promoting energy efficiency in California’s mild climate, and explores the intersection of fire-resistant construction and sustainable building. From innovative ADUs to rebuilding fire-damaged homes, Michael provides insights on designing for the future while balancing aesthetics, cost, and performance.

https://sidekickarchitects.com/home-1

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast, we chat with Nick Sowden of Sowden Building Solutions about the electrification of homes in Sydney, the shift away from gas, and deep energy retrofits. Nick shares insights on insulation upgrades, solar adoption, and how heritage homes can be transformed into high-performance, energy-efficient spaces. Plus, we discuss Australia’s growing incentives for electrification and why the transition to clean energy is becoming easier than ever.

https://www.sowdenbuildingsolutions.com.au/

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this episode of the Passive House Podcast Ilka Cassidy and Mary James sit down for part 2 of their deconstruction roundtable with Megan Stringer of Holmes, Eric Law of Urban Machine, and Katrina Lund & Imani Hamilton of Ramboll.

In Part 2 of our series, we dive deeper into the role of structural engineering in deconstruction and material reuse. They discuss overcoming industry hesitations, innovative connection technologies, and real-world applications of design for deconstruction. And also explore Urban Machine’s groundbreaking robotics, which automate lumber reclamation, making reused materials more accessible and cost-competitive.

https://www.ramboll.com/

https://www.holmes.us/

https://urbanmachine.build/

https://www.allforreuse.org/ecosystem-map

To register for our Reimagine Buildings: Best of Retrofit online conference on Friday, December 5, 2025, visit https://passivehouseaccelerator.com/

In this first episode of The Reimagine Edit (TRE) series of the Passive House Podcast, host Zack Semke shares selected clips of insights from Ed May of bldgtyp and Lois Arena of Steven Winter Associates.

The Reimagine Edit is a special series of the Passive House Podcast that shares curated insights from our Experts-In-Residence at the Reimagine Buildings Collective, our membership community of building professionals stepping up to tackle climate change. Learn more about the Reimagine Buildings Collective at https://www.reimaginebuildings.com

Thank you for listening to the Passive House Podcast! To learn more about Passive House and to stay abreast of our latest programming, visit passivehouseaccelerator.com.And please join us at one of our Passive House Accelerator LIVE! zoom gatherings on Wednesdays.