For our health



Air humidity in the comfort zone 40-60 %

That's why we stay healthy.

At a relative humidity between 40 and 60 %, our natural protective barriers are provided with optimal working conditions. Our mucous membranes in the nose and mouth protect us from the penetration of harmful foreign substances, bacteria and viruses that adhere to particles and would otherwise have free access to our airways. At lower air humidity our mucous membranes dry out and the protective mechanism only works to a limited extent.

Fortunately, viruses do not feel quite as comfortable in our comfort zone. This is because at an air humidity of 40-60% there are fewer particles in the air or "clump" together to form larger units. These in turn sink to the ground faster, thus reducing the risk of direct droplet infection via the indoor air.


Did you know that...

... the air humidification of rooms in office buildings has, according to a study, led to 18% less respiratory diseases?

Source: ASHRAE, 1981

Once the virus particles have reached the ground or surfaces, studies show that viruses are less stable at a humidity of 40-60% and therefore become inactive more quickly. This shortened survival time further reduces the risk of indirect smear infection.

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Best function of our natural protection

Optimal working conditions for our mucous membranes in nose and mouth. These protect us against the penetration of particles, bacteria and viruses into our airways.

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Transmission rate of viruses drops

The transmission rate of viruses via the air decreases because viruses form larger droplets at a humidity level of 40-60 % and thus sink to the ground faster.

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Shorter survival time of viruses

The survival time of viruses on surfaces is reduced at an air humidity of 40-60 %. Viruses with a fat cover (e.g. corona viruses) are most unstable under these conditions.

The optimum air humidity 40-60 %

Effects on the most important factors in our lives.



Comfort zone 40-60 %

The optimal air humidity for our areas of life.


Care and seniorsSchoolsUniversitiesOffice spacesNursery schoolsLaboratoriesHospitalsProduction facilities

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