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

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