Ventilation with heat recovery for efficiency
Ventilation units with heat recovery are key in terms of energy savings, as they ensure that the warmth carried by the exhaust air is not wasted, but first transferred to the incoming fresh air without the two air streams ever physically mixing. In extremely hot conditions, heat exchangers can also work in reverse so that the heat carried by the incoming air is transferred to the exhaust air and thus pre-cooled before entering the rooms. These systems should also be equipped with automatically controlled bypasses, thus allowing the incoming air to bypass heat exchange, for example, during the night at times when days are warm and nights are cool.