Basic Fundamentals of HVAC

Early modules lay down the physics cleanly without fluff, which helped frame everything that follows. The psychrometric chart walkthrough in Chapter 2, especially the example tracing mixed air at 55°F and 60% RH, stuck because it's exactly what comes up when reviewing HVAC specs. Explanations map well to day-to-day arch and infra conversations, like translating load calcs into duct sizing choices you can defend in a PR or design review. It’s beginner-friendly but doesn’t talk down, though I wished there was a bit more on controls logic and how it shows up in obs once systems hit prod. Some slides lingered on terminology, and a few diagrams could be tighter, but that’s a minor gripe. After finishing, I’m quicker to make HVAC calls and sanity-check arch tradeoffs without bouncing everything to a specialist.

Feels like annotated notes from someone who's been in the field, aimed at getting a team aligned fast without fluff. The psychrometrics section where he walks a mixed-air example step by step, then sanity-checks humidity against comfort bands, stuck with me. As a TeamLead watching budget, it's mostly practical, though I wasn't sold on the brief controls overview and wished there was more on commissioning checks across the system arch and building infra. Still, the way it calls out oddball cases: shoulder-season short cycling and undersized returns, helps avoid mistakes that show up later.

The psychrometric chart walkthrough in Chapter 3 clicked for sizing airflow; it's mostly clear, though I wished for a quick field calc example.