In this episode, Passive House Podcast co-host Zack Semke interviews Kimberly Llewellyn of Mitsubishi Electric Trane HVAC US, a founding sponsor of Passive House Accelerator.  An engineer by training, Kimberly spent 5 years with Positive Energy, a highly regarded engineering and consulting firm that specializes in Passive House work as part of a broad portfolio. Zack and Kimberly discuss her journey to Passive House, the "in the dirt" training she received while in the field at Positive Energy, and her pivot to Mitsubishi Electric, where she works to accelerate a virtuous circle of Passive House-friendly product development, Passive House adoption in North America, and consequent increased demand for Passive House mechanical equipment by the marketplace. After the interview, Zack and Matthew reflect on the interview, attempt to explain the science behind heat pumps, and share upcoming Passive House events from around the world. For event details, reference last week's Week In Preview article on the Accelerator website.

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