While experts may argue over the most effective teaching methods, all educators agree that a quiet, comfortable environment is conducive to learning. Achieving the right climate in portable classrooms during winter is perhaps the toughest challenge.
Many schools solve the problem of stuffy classrooms by opening a window.
Simple, yes, but the practice wastes energy and the cooler air is unevenly distributed. The Test Two classrooms were compared. Waste heat from exhausted air is recovered by the HRV and used to preheat incoming ventilation air. The HVAC system was installed over the Christmas vacation and the two rooms were monitored from January to March. The Results After the three months were up, the HVAC unit was the clear winner.