In this episode of Taking the Temperature, Jorg flips roles and interviews Jamie and John about the “middle child” of HVAC: humidity. They unpack dew point, dry bulb vs. wet bulb, relative vs. absolute humidity, why 25°C can feel amazing or miserable, and how air conditioning, dehumidifiers, evaporative coolers, and chilled-water systems really manage hidden heat. Along the way, they share real-world stories—from fogged glasses and soggy shirts to freezing supermarkets and damp basements—and explain how poor humidity control can lead to discomfort, inefficiency, and even mold inside your walls.