In this episode of the Retrofit Podcast, host Ryan Shanahan talks with Allison Bailes, owner of Energy Vanguard, a company focused on teaching, HVAC design services, and consulting. You'll also recognize him from his regular posts at Green Building Advisor, the Energy Vanguard Blog, speaking at events, and his wonderful book A House Needs to Breathe ... Or Does It? Ryan and Allison get into the specifics of Allison's own house, the importance of climate zones, running ductwork in conditioned spaces, and so much more.