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Indoor air

This website provides information about how the City of Helsinki takes care of indoor air quality at its premises.

Good indoor air promotes good health. Prerequisites for a pleasant indoor environment are

  • correct temperature
  • appropriate humidity
  • neutral scents
  • good ventilation
  • no draught
  • good acoustics and low noise level
  • correctly selected materials with low emissions
  • cleanliness and ease of cleaning
  • good condition of structures.

Other factors that impact indoor air include the quality of outdoor air, cleaning detergents used, other chemicals, cigarette smoke and contaminants spread by users, such as perfumes or animal dander.

Extensive condition surveys are often needed to review indoor air problems so that repairs and other necessary measures can be planned and implemented correctly. Condition surveys are usually ordered especially if it is suspected that the problem is caused by certain structural damage to the building or notable deficiencies in ventilation.

Signs of moisture or an unusual smell in the indoor air, such as the smell of mould, may indicate structural damage. Sources of unusual smells may also include sewers, furniture, or other materials. Stuffy air may also be caused by insufficient ventilation or an excessive room temperature.

Some problems related to indoor air can be fixed by changing the ways the space is used or through building management measures, for example by adjusting the supply air temperature.

The City of Helsinki has an established operating model for investigating indoor air problems in buildings. The problems are tackled through multi-disciplinary cooperation.

The building owner has the main responsibility for the condition of premises. The Urban Environment Division is in charge of investigating the City’s buildings as well as for their maintenance.

19.08.2021 15:48