sisäilmanvaihtoon

Sisäilmanvaihto, or indoor air ventilation, refers to the process of exchanging air within a building. This exchange is crucial for maintaining a healthy and comfortable indoor environment. The primary purpose of sisäilmanvaihto is to remove stale air, which may contain pollutants such as carbon dioxide, moisture, odors, and volatile organic compounds (VOCs) emitted from building materials and furnishings. Simultaneously, it introduces fresh outdoor air, providing necessary oxygen and diluting any remaining indoor contaminants.

There are several types of sisäilmanvaihto systems. Natural ventilation relies on passive air movement driven by wind pressure and temperature differences, often facilitated by open windows and doors. Mechanical ventilation, on the other hand, uses fans to actively control the airflow. This can include exhaust ventilation, which removes indoor air; supply ventilation, which brings in fresh outdoor air; or balanced ventilation, which both exhausts and supplies air. Heat recovery ventilation (HRV) and energy recovery ventilation (ERV) are advanced mechanical systems that preheat or precool incoming fresh air using the outgoing stale air, thus saving energy.

Proper sisäilmanvaihto is essential for preventing various indoor air quality problems, such as mold growth due to excessive moisture, occupant discomfort, and potential health issues like headaches, fatigue, and respiratory irritation. The effectiveness of sisäilmanvaihto depends on system design, installation, maintenance, and occupant behavior, such as the regular cleaning of filters and ventilation grilles. Adequate ventilation is a key component of healthy building design and management.