Whether at home or at work: regular ventilation and appropriate heating help to improve the indoor air, prevent the risk of mould growth and create an overall healthier indoor climate. But what can be done if the air humidity remains too high despite regular ventilation? Experts recommend mobile dehumidifiers, that provide optimally humidified room air fully automatically and even clean it.
Excessive air humidity has many causes
A variety of activities lead to a continuous increase in air humidity throughout the day. Even simple breathing increases the humidity in the air, because breathing air contains water vapour. The more people there are in a room or building, the greater the influence of breathing air on humidity. Added to this is sweating in summer or under the cosy duvet. Cooking, washing, drying clothes, showering or bathing produce additional water vapour. The room air can only absorb these amounts of moisture to a limited extent. This is why moisture condenses on windows, mirrors and cold spots in the room. Moisture accumulates, which form an ideal breeding ground for mould and can lead to health problems.
It is therefore essential to take appropriate measures to reduce humidity in the house or flat. This blog will tell you how best to do so.
Ventilating correctly – this is how it works
To prevent high humidity from becoming a problem, the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety and Consumer Protection (BMUV) recommends ventilating several times a day with the windows wide open. This exchanges the excessively humid indoor air for fresh air from outside.
How often and for how long should ventilation be carried out?
As a general rule: the cooler the room temperature, the more often it must be aired out to prevent mould from forming due to moisture. The following recommendations apply to the duration of the ventilation process:
- Ventilate several times a day with the window wide open, preferably by opening opposite windows (‘’draught’’)
- In summer, ventilate for 20 to 30 minutes
- In winter, five to ten minutes is sufficient
Always ventilate when a large amount of water vapour is produced by cooking, showering or drying clothes, for example. Tip: turn down the radiators before ventilating so that expensive heat energy does not disappear unused into the open air.
Excessive humidity despite ventilation: expert tips
If the air humidity remains too high or rises again quickly despite regular ventilation, this can have various causes. Regular ventilation is ineffective for damp walls or leaking roofs, in which case, specialist companies and drying equipment must be used to eliminate the problems. The situation is different if the air humidity is too high due to low room temperatures. Warm room air can store more moisture than cold air. Those who save on room temperatures out of concern for heating costs should therefore ensure that high humidity does not become a mould problem in the home.
Dehumidifiers help to create a permanently healthier indoor climate
If regular ventilation does not lead to the desired result or if less ventilation is done in winter to save heating costs, experts recommend mobile dehumidifiers to lower the room humidity.
Dehumidifiers with built-in hygrostat monitor the air humidity fully automatically and only switch on the dehumidification technology when the humidity value threatens to exceed a preset target value. Therefore, dehumidifiers are comparatively economical in terms of power consumption, but all the more effective in creating a healthy room climate and preventing mould.
Comfort dehumidifiers such as the TTK 27 HEPA and TTK 64 HEPA from Trotec not only remove excess humidity from the room air fully automatically, which can become a health problem in the long run. The room air is also cleaned in the integrated HEPA filter and more than 95% of pathogenic viruses (influenza, RSV, corona), bacteria, mould spores, allergens and fine dust particles are removed. The beneficial effect of purified and optimally humidified room air can be felt with every breath.
Mobile dehumidifiers for all room sizes and living space situations are available in a large selection in the Trotec Online Shop. The right dehumidification performance for every application: Peltier dehumidifiers such as the TTP 1 E, TTP 5 E or TTP 10 E are recommended for keeping small rooms dry. Adsorption dehumidifiers of the TTK series impress with a variety of comfort functions that simply make life healthier in houses, flats but also in commercial environments.
