As more HVAC contractors recognize the importance of building science and home performance, many are exploring how to incorporate these practices into their businesses without completely reinventing their operations. In this interview, Dominick Guarino, president and CEO of the National Comfort Institute (NCI), discusses how contractors can get started through education, incremental investments in diagnostic tools, and partnerships with home performance specialists. He also shares insights from NCI's annual Summit on the importance of company culture, explaining why implementing high-performance HVAC requires a shift from focusing on equipment sales to delivering comprehensive, customer-focused solutions.