In this episode of The Passive House Podcast, Matthew Cutler-Welsh speaks with Andreas Gertz about building the Wunderbar Passive House in Orewa, about 40 minutes north of Auckland. Originally from Germany and motivated by comfort and health, Gertz pursued Passive House despite local challenges, choosing a simple rectangular ICF design with imported European triple-glazed windows and integrated exterior shutters to manage overheating without mechanical cooling. The home uses whole-house ventilation, achieved near 0.6 ACH50 airtightness, has low power bills, and added solar projected to pay back in four years, while also earning Homestar V5.

https://wunderbar-passive-house.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.

In this episode of The Passive House Podcast, Ilka Cassidy and Jacob Racusin are at the BuildingEnergy Boston 2026 Conference (Sponsored by New Energy Works).

Ilka and Jacob recap day 2 of the conference including a keynote by Melissa O’Mara and Kevin Stack, “Unstoppable Inner Resilience and Generational Leadership,” which guided attendees through a meditation connecting to ancestors and future generations, highlighting accountability, leadership, and the “knowing-doing gap” via the Inner Development Goals. Ilka then interviews architect Phil Kaplan about a deep energy retrofit of a mid-century Acorn Deck House involving unexpected conditions, major structural changes, and questions about cost and embodied carbon versus rebuilding. The day’s highlights also include sessions on tools and strategies to balance operational and embodied carbon, evaluate deep versus moderate retrofits, and push manufacturers toward healthier, lower-impact materials.

Episode with Rachel White & Michael Hindle: https://passivehouseaccelerator.com/podcast/building-energy-boston-with-rachel-white-michael-hindle

Meditation that is similar to the one described in the episode: https://podcasts.apple.com/us/podcast/the-long-time-academy/id1589516917

Episode with Melissa O'Mara and Kevin Stack: https://passivehouseaccelerator.com/podcast/180-inner-development-goals-idgs-and-buildings-with-kevin-stack-and-melissa-omara

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.

In this episode of The Passive House Podcast, Ilka Cassidy and Jacob Racusin are at the BuildingEnergy Boston 2026 Conference (Sponsored by New Energy Works).

Ilka and Jacob speak with:

• Gregory Smith, Architect at Moody Nolan
• Clay Tilton, Existing Buildings Program ManagerBuilt Environment Plus (BE+)
• Arlen Li, Fitwel Ambassador, Planning PrincipalHGA
• Anthony Michetti, Director of Sustainability, Cell Signaling Technology
• Julie Newman, PhDDirector of SustainabilityMassachusetts Institute of Technology (MIT)
• Steve Hessler Building Systems Specialist at New Energy Works | Certified Passive House Consultant at Holzraum System
• Bryan Bleiere, Director of Offsite Construction at New Energy Works
• Luke Winston-Almanzar CEO, Co-Founder Reservoir

They discuss the conference mood amid political and economic headwinds, the theme “Don’t Stop Us Now,” and a keynote on “The Cost of Pausing” featuring MIT and Cell Signaling Technology, emphasizing business cases and co-benefits for maintaining climate goals. Conference co-chairs Clay Hilton and Greg Smith highlight curation, community-building, and student participation. Trade-floor interviews feature Reservoir’s smart heat-pump water heater with predictive controls and recirculation, and New Energy Works’ timber/panelization work and foam-free assemblies.

https://nesea.org/conference/schedule/50140

https://newenergyworks.com/

https://passivehouseaccelerator.com/articles/component-spotlight-rethinking-domestic-hot-water-intro...

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.