In this video, I'll be walking you through the essentials of using SketchUp to create building geometry specifically for blower door envelope calculations. You'll learn how to navigate the workspace, draw the building footprint, and model the envelope accurately. By the end, you'll have a solid foundation for using SketchUp to calculate your building’s air barrier, helping you achieve precise and efficient results in your blower door tests. Whether you're new to SketchUp or just need a refresher, this tutorial will get you up to speed in no time!