Heat Recovery Ventilation
In passive houses, it is extremely important to minimize losses of produced energy. Therefore, recuperation is used in ecological homes, which replaces traditional ventilation chimneys.
Also it has built-in filters that clean up the air, e.g. from smog.

Have you heard of mechanical ventilation with heat recovery before?
Do you think it is a good solution in the case of polluted air in many countries?
Building a better world. Together!
SAVAGAYA / Natalia Szyk-Trocha