Air Exchanger: Air Purification, Humidity Control, and Energy-Saving.
Any new construction and any home that increases its surface area by 50% must now be equipped with a heat recovery air exchanger. Using air ducts, this system sends stale air outside while bringing in fresh air, which it has preheated. Thus, it improves the quality of ambient air, which could otherwise remain trapped in a room for too long.
Please note that installing an air exchanger in older homes is also possible if necessary.
Flexibility, simplicity, and efficiency.