ilmanvaihtojärjestelminenseen

Ilmanvaihtojärjestelmä, often shortened to ilmanvaihto, is the Finnish term for ventilation systems in buildings. It refers to the mechanical or natural processes that exchange indoor air with outdoor air. The primary purpose of an ilmanvaihtojärjestelmä is to maintain good indoor air quality by removing stale air, pollutants, moisture, and odors, and introducing fresh, clean air.

There are generally two main types of ilmanvaihtojärjestelmä: natural ventilation (painovoimainen ilmanvaihto) and mechanical ventilation (koneellinen ilmanvaihto). Natural ventilation relies on differences in temperature and air pressure to create airflow through windows, doors, and dedicated vents. Mechanical ventilation uses fans to actively supply fresh air and/or exhaust stale air. Many modern buildings utilize a combination of both, often referred to as hybrid ventilation.

A common type of mechanical ventilation in Finland is mechanical supply and exhaust ventilation with heat recovery (koneellinen tulo- ja poistoilmanvaihto lämmön talteenotolla). This system not only ventilates the building efficiently but also recovers heat from the outgoing exhaust air to preheat the incoming fresh air, thus saving energy. Proper design, installation, and regular maintenance of the ilmanvaihtojärjestelmä are crucial for ensuring optimal performance and occupant comfort.