So let's start the journey towards more awareness!

Did you know…

…that we spend 90% of our time indoors?

  • On average we spend 21.6 hours indoors each day (and on average 628 992 hours in a life time).
  • We spend 58 years of our life at home - 27 of those years are spent in the bedroom.
  • You breathe around 8 to 10 liters of air every minute. You breathe 6 liters of air per minute when you rest, and around 100 liters when you work out.
  • You could live 3 Weeks without food, 3 days without water, but just 3 minutes without air.
  • Indoor air can actually be up to 5 times more polluted than outside air.

…how much indoor climate affects health and comfort?

  • Poor indoor air often causes headaches, loss of concentration, and other short-term effects such as eye, throat and skin irritation. Long-term effects can be allergies, respiratory disease and cancer.
  • Sick leave can decrease by up to 50% by improving the indoor climate.
  • Most people experience comfort when the temperature is between
    20-24 degrees C.
  • How you experience the indoor climate depends on quite a few variables; choice of clothing and activity, temperature, air speed, humidity of the air, as well as the temperature of the surrounding surfaces.
  • When the air in a room is moving at 0.2 m/s we already experience a draught.


…that a good indoor climate has huge effects on our cognitive skills and productivity?

  • Your ability to understand and use information can increase by 172% in a good indoor environment.
  • Your ability to handle crises can increase by 97% in a good indoor air environment.
  • Studies have shown that in "green" certified buildings employees were treated 30% less for headaches and respiratory problems than employees in regular office buildings. This combined with a 26% increase in performance, and better sleep at night.
  • Investing in clean air for employees pays off quickly. New research suggests that spending around $ 40 per person per year on indoor air quality results in a productivity increase of $ 6500.

…that indoor air quality is affected by humans, furniture and building materials?

  • 5,000 different types of pollutants (VOCs) in our indoor air come from humans and building material (too high VOC levels might increase risk of cancer and liver, kidney and nerve damage)
  • Another type of pollution is particles. They vary in size (from PM1, PM2.5 to PM10) and harmfulness. With the right type of filters in the ventilation system these particles can be removed.
  • Too high levels of CO2 often headaches and loss of concentration.
    • An occupied conference room without ventilation reaches a too high CO2 level in 10 minutes. (recommended maximum level equal to 1000 ppm)
    • A single office room without ventilation reaches the recommended maximum level of CO2 in just 15 minutes.

If you want to dig into the world of science when it comes to indoor air quality and indoor climate we have gathered reports, publications and references here.