Optimally humidified air is important for health and well-being. Humidifiers quickly improve the indoor climate, enabling you to breathe freely. Whether it is set up in the bedroom, lounge or office, a humidifier makes us feel more relaxed, more energetic and able to concentrate better. While there may be numerous tips and tricks for preventing room air from becoming too dry such as hanging up washing or introducing plants, if air really is dry, only a device for increasing the relative humidity can help. Find out below about the symptoms caused by dry air, why dry air even affects us and how humidity is measured. We will also show you which humidifier is right for you.


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Problem: dry air

If the relative humidity drops below 40%, then the air becomes dry. Dry air can lead to various symptoms: headaches, burning eyes, dry and inflamed mucous membranes, dry skin, an unpleasant scratchy feeling in the throat, poor sleep and increased susceptibility to colds or flu. The symptoms of dry air are intensified at night when we are asleep. However dry room air is not just a problem for us humans, it can also affect pets. Furniture, wooden floors and musical instruments cannot tolerate long-term exposure to dry air very well either.

Causes of dry air

In apartments or houses, dry air primarily occurs in winter when the humidity of the cold air outside is a lot lower than the humidity of the warmer air in spring and summer. When the central heating is turned on indoors during the cold season, this causes the air to dry out even more. The greater the difference between the temperature outside and inside, the lower the relative humidity indoors. Besides natural reasons for air being too dry, a ventilation system can actually exacerbate the problem in the case of passive or minimum energy houses. The cold outdoor air is heated to room temperature, resulting in a level of humidity which is permanently too low. A good indoor climate must be aimed for in order to prevent the above-mentioned side effects and to stop dry heating air from ever becoming a problem.

Optimal humidity

Relative humidity of between 40% and 60% creates a healthy and comfortable climate for humans and animals. This level is recommended by doctors and medical experts and helps us to stay healthy and feel comfortable in our home environment. The benefits of optimal humidity are many

  • Your nose, eyes and skin will no longer feel dry
  • You will have less risk of contracting flu
  • You will enjoy peaceful, deep and relaxing sleep
  • You will be able to concentrate better
  • Lower dust and pollen levels – ideal for allergy sufferers
  • Furniture, wooden floors and paintings are protected
  • Pianos, guitars, violins and other instruments will not go out of tune as much

Measuring humidity

The relative humidity in a room is measured using a humidity gauge, or hygrometer as it is known to experts. Hygrometers are available in analogue and digital versions, with or without additional functions. Stadler Form also offers air humidity measurement devices of this type: Stadler Form hygrometers. For measurement to be accurate, it is important for the hygrometer to be positioned correctly: Set up the hygrometer on a raised surface in the middle of the room, away from windows and doors. Wait a few minutes for the sensor to adjust to the room temperature. The relative humidity can then be read.

More about hygrometers



Humidifiers: the solution for healthy air

As a rule, if the level of humidity is too low, only a device for increasing the air humidity can help. There are many different designs to choose from such as vaporisers, ultrasonic humidifiers (nebulisers/atomisers), evaporators and air washers. However, the function they fulfil is always the same: to increase the relative humidity of the indoor climate by adding to the humidity (water) in the air. This can also be achieved to some extent by introducing houseplants or hanging up washing – however a good humidifier will also offer numerous features besides, such as hygrostats or automatic shut-off to facilitate and speed up humidification of the air.

10 Reasons to get a humidifier



Humidifier against the coronavirus

Humidifier against the coronavirus

A humidifier is in times of the coronavirus SARS-CoV-2 a very useful purchase. The perfect humidity level is between 40 and 60% relative humidity. Scientists found out, that viruses remain less viable on surfaces, when the humidity level is within this range. At the same time, the duration viruses remain airborne decreases. Which means that with a perfect humidity level, you can reduce the exposure to the virus in the air and on surfaces. Humidifiers create a healthy indoor air climate for you and help to reduce the lifetime of viruses in a room.

More about humidifiers and the coronavirus

Buying the best humidifier

When it comes to air humidifiers, there are many different models, shapes and designs to choose from – all with their pros and cons. Besides choosing the right system, other important factors include room size, water hardness, noise levels, positioning and the expected device features (e.g. hygrostat, automatic mode, pre-heating, remote control, etc.). A humidifier should be easy to use and quick and easy to clean. It should also demonstrate high humidification performance and consume as little energy as possible. Find out more about choosing your ideal humidifier in our blog post.

Buying the best humidifier



It is not a question of which humidifier is best but rather of which is the most suitable for my requirements. So I will need to know how big the room is, the current level of humidity, how hard my water is and which design I prefer. The blog post "Buying the right humidifier” contains numerous tips on the points to be taken into account when buying a device for increasing relative air humidity. We will also gladly provide you with personalised advice over the telephone or via e-mail or Twitter and help you to find the humidifier that is right for you and your home.