ilmavaihto

Ilmavaihto refers to the process of exchanging indoor air with outdoor air. This can be achieved through natural ventilation, where air moves through openings like windows and doors, or mechanical ventilation, which uses fans and ductwork. Mechanical ventilation systems are often employed in modern buildings to ensure consistent air quality and thermal comfort. These systems can be designed to pre-heat or pre-cool incoming fresh air, reducing the energy load on heating and cooling systems.

The primary purpose of ilmavaihto is to remove pollutants from the indoor environment, such as carbon dioxide, moisture, volatile organic compounds (VOCs), and odors. Adequate air exchange is crucial for maintaining a healthy indoor atmosphere, preventing the buildup of contaminants that can lead to respiratory problems, allergies, and general discomfort. It also helps to control humidity levels, which is important for preventing mold growth and protecting building structures.

Effective ilmavaihto is a key component of building design and operation. The rate of air exchange is typically measured in air changes per hour (ACH) and is determined by building codes and occupant needs. Modern ventilation systems often incorporate heat recovery, known as heat recovery ventilation (HRV) or energy recovery ventilation (ERV), which transfers heat or coolness from the outgoing stale air to the incoming fresh air, thereby improving energy efficiency. This process is essential for creating healthy and comfortable living and working spaces.