Sure, let’s pull the fan curve and the static pressure spec at the inlet. A 0.5 °C lift at a 2 kW load is still within tolerance. If there’s sabotage, you’ll see a sudden pressure spike or a drop in flow—maybe a clamp or a foreign object. We’ll run a pressure‑drop test across the exchanger and log the thermistor data every minute so any anomaly shows up in the trend.