Why use a Humidifier?

Optimal humidity is important for your health and well-being. If the air is too dry, humidifiers improve the air quality and ensure a healthy environment.

A relative humidity of 40 – 60% is recommended for a pleasant atmosphere in the areas we live and work in. Air can become dry, particularly with central heating in winter, when room humidity can often drop below 30%. You can use a hygrometer to measure air humidity (such as Selina from Stadler Form). Typical symptoms resulting from dry air include dry skin and eyes, sore throat, headache and diminished performance.

You can choose between four different humidifier systems: evaporators, humidifiers, air washers and nebuliser humidifiers.

Our award winning Stadler Form range of HUMIDIFIERS are designed in Switzerland and are attractive, appealing and offer class-leading performance with numerous innovative features to ensure optimal air humidity in a healthy environment.

Medical professionals recommend a relative humidity of between 40 – 60%. If the air is dry, we suffer from burning eyes, dry skin, irritated mucous membranes, we do not sleep as well and are more susceptible to catching a cold or the flu.
Building materials and interior furnishings made of wood or fabric (e.g. curtains or carpets) absorb lots of moisture. If the air in a room is dry, cracks can form (wood) or an electrostatic charge (fabric) can develop. Musical instruments made of wood can go out of tune if the wood dries out.

Cold air contains less moisture than warmer air. For this reason, humidity in interior rooms often drops below 30% in winter. The greater the difference between outside and inside temperature in winter, the dryer the air in the room is. It is easiest if you measure relative humidity with a hygrometer. Position the hygrometer in the centre of the room, away from windows and doors, and simply read the humidity on the display (e.g. Selina by Stadler Form). You need a humidifier if the humidity is below 40 %. If the humidity is above 60 %, using a dehumidifier is recommended so as to prevent mould formation.

All systems have the same goal: to add water to the air and thereby increase the relative humidity. A distinction is made between two fundamental humidification principles: passive and active air humidification.

With passive humidification, the air absorbs only as much moisture as it needs at the current temperature. This involves applying the self-regulating evaporation principle. In the evaporation process, the dry air from the room is guided over an evaporation filter (evaporator) saturated with water or via moistened evaporator discs (air washer). In this context, the air absorbs only as much water as it needs. The moistened air is blown into the room by a ventilator.

With active air humidification, the current temperature and room humidity are irrelevant. Active humidification systems are vaporisers and nebulisers. The vaporisation principle brings water to the boil and then distributes the hot steam into the room air. The nebulisation system splits water into tiny droplets with oscillations of the ultrasonic membrane, and distributes these as mist into the room air. These humidifiers are extremely powerful and distribute moisture into the air until the air is saturated.


The dry room air is guided through the moist evaporator cassettes by a ventilator and absorbs only as much moisture as it needs at the current temperature. The air is optimally moistened and blown into the room.


The water is brought to the boil by means of a heating plate. The hot steam is distributed into the room air.


Air washer

The humidifier discs rotate through the water and absorb it in the process. The dry air is drawn in by the ventilator and guided over the discs. In the process, the air is enriched with moisture and freed from impurities (such as dust, pollen, pet hair and mites) in a natural way.



  • Your nose, eyes and skin will no longer feel dry: You will feel more comfortable at home.
  • The risk of catching the flu is reduced: The influenza virus survives for less time in rooms with optimum humidity.
  • The risk of infection is considerably reduced at higher humidities. There will be less stress on your mucous membranes and less chance of you falling ill.
  • You and your family will sleep better: dry air is not good for you. Enjoy better and more restful sleep when the humidity is optimal.
  • You will be able to concentrate better: you will feel less listless and tired and your ability to concentrate improves.
  • Dust and pollen exposure will be reduced: even allergy sufferers can take a deep breath, moist air binds dust particles and pollen.
  • Furniture, wooden floors and paintings will be protected: cracks and deformation will be avoided.
  • Instruments will not de-tune: you do not need to frequently retune pianos,  guitars and violins.