Did you know?

  • Even if the act of airing is almost instinctive for most people, it is also a fact that the level of ventilation in the average house is often inadequate.
  • An average person consumes 2 kg of food and water a day, but breathes 15 kg of air a day (12,000 litres).
The quality of indoor air is clearly important.
However, many factors have influence on the air quality.

When aiming for the best indoor climate,
some things are good to know

The quick facts


The air in children's rooms contains chemicals from all the plastic toys and electronic equipment.

Children are particularly vulnerable to poor air quality.

A high level of humidity and too low indoor temperatures can cause condensation on cold surfaces, which can lead to mould and fungus.

The number of people suffering from asthma and allergy has grown rapidly over the last 30-40 years, partly due to people spending more time indoors.

Condensation and mould typically appear where furniture is placed against a cold outer wall.

Mould can cause allergy symptoms and asthma and be the source of tiredness, headaches and respiratory problems.

A high level of humidity provides the perfect environment for dust mites, which can cause allergy problems.

The moisture production from a typical family is 10 L/day.

The pollutants of indoor air are numerous and include: humidity, odours, gases from materials, tobacco smoke, mould, allergens and radon.

The normal domestic activities like breathing, cooking and showering pollute the air of the home with humidity and other pollutants. Poor indoor air quality in meeting rooms and classrooms impedes learning ability and reduces our ability to concentrate.