A single 5-minute +700 W spike moves the room's thermal response by at most 0.2 kW and leaves the baseline at the persistent load. In calm air the wind terms vanish while natural ventilation remains. Extended and ventilation coefficients and heat-source baselines survive a restart unchanged (no hour of baseline re-learning), and enabling an extra ventilation term later keeps everything learned for the others. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>