Steve and Randy Williams explore advanced diagnostic tools used in modern home construction and renovation. Randy showcases a range of devices including thermal imaging cameras, electronic smoke testers, window performance analyzers, and ultrasonic leak detectors. Each tool helps identify issues like air leaks, moisture problems, and energy inefficiencies. Randy emphasizes their practicality in real-world settings—especially in colder climates like Minnesota. The session highlights the importance of accurate data over assumptions, urging professionals to integrate these technologies for better diagnostics and improved building performance. It's a gadget-packed deep dive for builders and architects who want smarter ways to analyze homes.