Dehumidifiers and humidifiers

In short: Dehumidifiers lower humidity in overly damp rooms, while humidifiers increase it in overly dry indoor air. Both devices aim to reach a healthy humidity of roughly 40 to 60 percent.

In more detail: Excessively high or low humidity can equally strain health, furniture, and building structure.

In detail

• Condensation dryers: Cool the air so water vapour condenses and is collected in a container.
• Adsorption dryers: Use a desiccant that binds moisture and work efficiently even at lower temperatures.
• Evaporators: Simple humidifiers let water slowly evaporate across a large surface.
• Ultrasonic humidifiers: Produce a fine water mist through high-frequency vibrations, acting faster than evaporators.
• Hygiene risk: Humidifiers must be cleaned regularly, otherwise germs can multiply in the water tank.
• Mould prevention: Dehumidifiers in basements or bathrooms can prevent mould growth caused by excess humidity.
• Measurement: A hygrometer shows current humidity and helps use the devices purposefully rather than by feel (richtig-lueften-und-schimmel-vermeiden, raumklima-und-luftfeuchtigkeit).