6 Humidifiers in test comparison 2022

HumidifiersIndoor air that is too dry can not only affect the health of adults. Mucous membranes react sensitively if the environment is not moist enough. How much low humidity affects baby and child is often reflected in health problems such as dry skin or asthma.

Published by Christina Post updated on 4. January 2022

Too dry room air can not only affect the health of adults. Mucous membranes are sensitive if the environment is not moist enough. The impact of low humidity on babies and children is often reflected in health problems such as dry skin or asthma. When natural measures like airing, planting and drying clothes aren't enough, especially in winter, parents can turn to technology and set up a humidifier. These devices nebulize, evaporate or vaporize water to keep the room air in the optimal range.

– Too dry room air promotes respiratory problems in babies, children and adults. – You achieve constant room humidification with humidifiers. – The devices work either with steam, nebulization or evaporation. – Not every humidifier is suitable for every room size. – Proper cleaning of the device is very important. – Information about a particular humidifier in the test provides the magazine okotest and Stiftung Warentest.

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6 humidifiers in test comparison 2022

The best humidifiers

Philips Humidifier HU4814/10

6 humidifiers in test comparison 2022

– More relaxed breathing: NanoCloud evaporation technology provides without heating the water for a. – Adjustable: 3 speed levels for humidification up to 200 ml/h in rooms up to 32 m². – Avoids wet spots, white dust and impurities: Our ultra-fine NanoCloud evaporation system. – Easy to use: switches off automatically when the tank is empty – convenient refilling through. – Scope of delivery: humidifier, humidifier filter

The Philips HU4814/10 humidifier works very hygienically as an evaporator. The manufacturer calls this technology, in which air is sucked into the device via a fan through numerous slots on the sides and humidified over the large surface of a filter, Nano-Cloud. The air then re-enters the room through a circular slot on the top of the device. In the center of the lid and thus easily accessible, is the display.

The humidifier manages a room size of up to 40 square meters with a humidification capacity of 300 ml per hour. Three speed modes are available to the user. One automatic mode available. The humidity to be achieved can be selected in three stages between 40 percent and 60 percent. A sensor measures when the humidity is reached. A timer is also integrated, which enables an operating preselection of one, four or eight hours. When the water is empty, the device switches off automatically.

The integrated water tank holds 2 liters. To fill, you simply have to remove the lid. Pour the water into the large interior space. From the outside you can see via a small window how high the water level is. With a noise level of 34 decibels, the device is quite loud, depending on how you feel about it. At night, a sleep mode should provide extra peace of mind. The model from Philips looks great in the two available colors of black. Looks like a bucket with integrated lid. With its size of 25 x 25 x 34 cm it stands out quite a bit in the room. A replacement water filter is not included with every purchase. May therefore need to be purchased separately. It is also possible to choose the water tank in double size (4 liters). The device is then a little higher.

The Philips 4814/10 is a device with simple technology that has a good humidification performance when used correctly. We like the function as an evaporator and that the humidified air is blown back into the room via a 360 degree outlet.

Can you add fragrance additives to the water?

The instruction manual does not recommend adding scented oils or chemical additives to the water. The filter could be damaged by them. No longer work properly.

How often do I have to change the filter?

Depending on how often the device is used, the filter should be changed every 3-6 months. For maintenance, it is sufficient to put it in cold water or a water-vinegar solution for one hour once a week and then squeeze it out well.

The Philips humidifier seems to have a predominantly positive effect on the mucous membranes and state of health of the user with its performance. Many customers praise the quiet night mode. Operate the device even during the day with it. The built-in hygrometer doesn't do so well, as it often shows a higher humidity than independent devices on the other side of the room. The humidification performance also gets criticism from some customers. However, the manufacturer strives with information. Advice on handling to help.

– As an evaporator very hygienic – Predominantly good humidification performance – Easy filling – Timer – Night mode – Automatic shut-off – Very low power consumption (18 watts)

– Integrated hygrometer not so reliable – Perceived as too large – Additional costs due to filter replacement and cleaning

Beurer LB 55 humidifier

6 humidifiers in test comparison 2022

– Good climate at home: the steam humidifier heats the water to over 100 ° C and brings the. – Humidifier Hygienic: By heating the steam is particularly hygienic, odorless and free. – Easy operation: steam humidifier has control LEDs. Choose at the room air washer. – Removable tank: the tank of the humidifier holds 6 liters and has a water level window. To. – No calcification: To prevent the water vaporizer from calcifying too quickly, the delivery includes 15.

As an evaporator, the Beurer humidifier is an efficient working device when the humidity needs to be increased as quickly as possible. In rooms of up to 50 square meters, this 35.5 x 27 x 38.5 cm model manages up to 400 ml per hour. For this purpose, the water is heated in the device. Blown into the room by a fan in the form of steam. Two operating modes can be selected.

The removable water tank of the Beurer humidifier is incredibly large at six liters, but it is also needed because the water is used up more quickly during evaporation. The filling level can be seen from the outside through a slit. If the tank is empty or the device threatens to overheat, the vaporizer switches off automatically. It is operated via two control knobs on the side of the housing. There is a power button. One on the choice of humidification performance. Due to the limited functions, the operation is almost intuitive.

Via the Beurer LB 55, air humidification is carried out selectively on the upper side, where there is a small outlet opening. The steam must first be distributed in the room. The shape of this white model is oval to rectangular. Included in the package are 15 anti-scale pads that slow down calcification.

With its huge water tank, the Beurer LB 55 delivers its performance without having to be refilled several times a day. The intuitive controls make it easy to select the desired level. We also like the fact that the water tank can be removed for filling.

How often does the device need to be cleaned?

Residual water should be removed daily. Depending on the lime content of the water used, weekly cleaning is necessary.

Can essential oils be added?

The device should only be filled with water.

Turns itself off when the humidity is reached?

No, the device does not have a hygrostat. It must be turned off manually when the desired room humidity is reached.

Despite the possible calcification of the device due to the heat, cleaning seems to be easy. Especially customers who care about bacteria-free humidification praise the Beurer and its humidification performance. Many customers operate the device even at night in the bedroom without the noise disturbing them. Negatively fall into the weight of the power consumption and the bulky size.

– Quick increase in humidity – Very large water tank – Anti-calc pads included – Hygienic due to strong heat – Easy to use – Easy to clean

– Power requirement 365 watts – Steam emission only selectively – No built-in hygrometer – Very large dimensions

Philips HU4811/10 humidifier

6 humidifiers in test comparison 2022

– Adjustable: 2 speed settings for air humidification up to 250 ml/h – 2-liter tank for. – Avoids wet spots, white dust and contamination: Ultra-fine evaporation provides. – Relaxed breathing: natural NanoCloud evaporation process provides without heating the water for. – Easy to use: switches off automatically when tank is empty – convenient refilling and. – Scope of delivery: humidifier, humidifier filter

Those who deal with the Philips humidifier also encounter the HU 4811/10 model. The white evaporator is similar to the HU 4814/10 in many respects. Design and size do not differ. This water tank also comprises 2 liters and the filter humidifies the sucked air through the Nano-Cloud technology described by the manufacturer. Filters are the same on most Philips models. On the champagne-colored lid of this model is no display, but a rotary knob, via which the two operating speeds "normal" and "quiet" can be set.

As for the functions, this humidifier from Philips is not so variable. It switches off when the tank is empty, but does not have an automatic mode, for example. The device also does not check and regulate the current humidity of the air. For this purpose, an external hygrometer is necessary. The power of the 4811/10 is high enough to humidify rooms up to 38 square meters. With 15 watts, the operation is in the energy-saving range. The humidifier can be ordered without or with a replacement filter. A filter change is due every three to twelve months, depending on the intensity of use.

A verdict of the consumer magazine okotest has this model from Philips already in the bag: it was test winner in the 2019 tested models with an overall line of VERY GOOD.

We trust the test criteria and reviews of okotest. Therefore, this model scores with its very good test rating, which praises especially the low germ load.

What material is the filter made of?

The filter is made of natural fibers, which visually come in the form of honeycomb. It is pliable and can be easily squeezed after being rinsed out.

Can be used aromatic oil?

The manufacturer advises against it. Aroma oils could get stuck in the FIlter. Its effect affect. The majority of customers are satisfied with the device. Certifies it is of good quality. From many reviews it reads that the filter reaches its full performance after a certain start-up time. Health complaints improve very well through the device. Since the housing and lid lie loosely on top of each other, users don't necessarily recommend it in a child's room. The noise in operating mode disturbs many customers. Is described as too loud. Some buyers also expected more from the performance. The Philips humidifier is therefore more suitable for smaller rooms.

– Energy-saving evaporator – All-round outlet for humidified air – Very easy to use – Easy to fill – Automatic switch-off – Easy to clean – Works hygienically – Test winner okotest

– Humidification performance partly unsatisfactory – Limited functions – Operation display quite bright

Medisana UHW ultrasonic humidifier

6 humidifiers in test comparison 2022

– Ultrasound: The ultrasound technology improves the air quality and prevents the dehydration of the. – Infinitely adjustable: the humidifier transforms water into the finest mist through vibrations. Innoative: Thanks to the low-noise. Energy-saving ultrasonic technology, the UHW is ideal for. – Modern design: The device impresses with its simple and flexible handling and its modern. – For large rooms: thanks to the large water tank with a volume of 4.2 liters, the humidifier is.

From the field of ultrasonic technology comes this Medisana humidifier for rooms up to 30 square meters. At 4.2 liters, the capacity of the water tank is larger than most. The nebulizer increases the humidity steplessly, it is regulated by hand via a knob on the side. In a size of 26.5 x 20 x 33 cm, the silver-colored piece stands nicely in the living room or bedroom. The fine mist is blown out at the top.

In this model, the water tank is visible from the outside, so you can always see when the water is running low. In case of doubt, the device switches off automatically when the tank is empty. With a maximum output of 230 ml per hour, the humidifier from Medisana can run in continuous operation for up to 18 hours with one tank filling. With a consumption of 32 watts, it is consumer friendly. The German medical technology manufacturer Medisana recommends thorough cleaning every three days. Thus, the effort is somewhat more intense than other models.

Additional features such as timer or hygrometer are unfortunately not available. For this purpose, a night light is integrated. Who would like, can also buy a hygrometer from the same manufacturer in the set in addition. You should do without the addition of fragrance oils.

With this device, we like that the water level is visible at a glance, as the transparent water tank is on the outside. So you can also check from the other side of the room if there is still enough water in the tank

Can the device be controlled by a timer?

Yes, it is possible. When the device is disconnected from the power, the setting is retained. As soon as then again current flows, the equipment starts the activity. This distinguishes it from digitally controlled humidifiers, which are only in standby mode when power is restored.

How to fill the tank?

The water tank must be removed from the unit and turned upside down. There is the inlet for fresh water.

The humidification performance is predominantly described as very good – especially in view of the good price. Customers with health problems. Also their houseplants benefit from the use. The filling is described however by many as awkwardly around complicatedly. Some customers report problems with water leaking from the unit. However, Medisana's customer service reliably offers an exchange for defective devices.

– Experienced German manufacturer of medical technology – Control via timer possible – Water tank and filling level clearly visible – Night light – Automatic switch-off – Long operating time with one tank filling

– Cleaning effort – water refill somewhat cumbersome – precipitation around the device possible

Wick Compact Cold Mist Humidifier

6 humidifiers in test comparison 2022

– Compact cold mist humidifier (no risk of burning) – Whisper-quiet ultrasonic technology – Suitable for use in babies' and children's rooms – For use with WICK VapoPads Menthol or Rosemary& Suitable for lavender* – Optimal steam output due to alignable and adjustable spray nozzle

The manufacturer Wick, known for cold products, provides with this ultrasonic humidifier a device that is especially suitable for small rooms up to 15 square meters. The water tank of 1.8 liters capacity is sufficient for operation for at least 20 hours. The Wick humidifier CoolMist is the mini among lower presented products: The dimensions are a compact 21 x 22 x 24 cm. The CoolMist humidifier is almost egg-shaped. Has a small outlet on the top for the mist. You control the intensity via a rotary knob. Below this control is a slot for the corresponding Wick fragrance pads, which add the desired fragrance to the mist. One sample pad is included, others have to be bought separately. Except for the automatic shutdown when water is scarce, the device offers no additional functions, but can be combined with a timer. The operating mode is maintained.

For filling, the transparent water tank is removed and turned upside down. At the bottom you will find a very generous opening for the fresh water.

A small part with a big effect in small rooms. We can recommend the Wick humidifier if size is an ie. The compact size of the nebulizer does not take up much space, especially in small rooms.

How loud is the device?

The airborne sound emission is 40 dB. However, customer opinions are divided. For sensitive ears the noise can be disturbing.

The CoolMist from Wick is described as a chic little humidifier. In case of an irritating cough or a cold, it is a popular choice. Can also score with a good performance. As a disadvantage, the high maintenance effort is perceived, which users should perform weekly according to the operating instructions. The noise level can also cause sleepless nights. Children are usually less bothered by the volume.

– Compact and space-saving – Humidifier can be used with fragrance – Very wide opening for filling – Automatic switch-off – Transparent water tank

– Not suitable for large rooms – No additional functions – Operating noise can be disturbing – Maintenance requ.

InnoBeta Waterdrop Ultrasonic Humidifier

– Stress-free& Free replacement without questions! We offer a 60-day money back guarantee. – Quiet and calm: with the ultrasonic technology, which avoids disturbing noise, you can. – Stable& long-lasting: the 2.4-liter water tank allows the humidifier to remain stable for 12 hours. – Delicate design: water drop-shaped with 7-color LED lights& Adjustable. – When relaxing& Enjoy: The aroma diffuser function lets you enjoy the scent of your essential.

The manufacturer Innobeta aims to make everyday life easier with helpful devices. Part of the range is this ultrasonic humidifier in the form of a raindrop, which is suitable for rooms up to 35 square meters. The size is not too bulky at 21 x 21 x 30 centimeters. The design makes the 2.4 liter water tank look quite slim. At the upper tip, the delicate water mist escapes specifically in one direction. When setting up, you should therefore make sure that no wall and no piece of furniture is targeted. The spray direction can be adjusted by turning the nozzle horizontally.

The center part has LEDs in 7 colors and glows in the dark. So it can serve as a night light in the children's room at the same time. The light can also be turned off. If the level of water in the tank drops too low, the device switches off automatically. The strength can be adjusted via a regulator in the lower part of the humidifier. Inside a stone filter provides additional cleanliness.

To fill with water, you have to partially disassemble the humidifier. Turn the middle part to remove the filter. This place is the inlet for the fresh water. Energy consumption (15 watts) and the low decibel level of 35 suggest that the device can be used without interruption even at night. Who would like, can the ultrasonic nebulizer a smell beisetzen. For this purpose, there is a separate aroma bowl in the lower part, which then distributes the fragrance with the mist in the room.

This small device is our design favorite. The water drop optics with the changing colors appeals not only to children's eyes. We consider the possibility of adding essential oils or other aromas to be a well solved additional option.

How often do you have to change the filter?

The filter should be changed after about 500 hours of operation. This corresponds to a period of about two months, if the device is operated daily and only at night for 8 hours.

Design and performance score well in customer reviews. The air humidity is noticeably improved. Especially children sleep more calmly with cough or other respiratory problems. Many customers find cleaning and refilling water too cumbersome, as well as the volume disturbs sensitive sleepers. Partial problems with escaping water. However, the manufacturer is here very anxious to solve problems to the satisfaction.

– Chic design – Night light included – Low energy consumption – Automatic shut-off – Powerful

– Sprays specifically in one direction – filling with water a bit complicated

Advantages and disadvantages of humidifiers for baby and child

Humidifiers are definitely a helpful device when you take a look at the benefits. If the air humidity is not in the healthy range, especially in winter due to heating, you can use such a device to increase the humidity in a controllable way and keep it constantly in the optimal range. You will notice that the mucous membranes and eyes are less dry. In this way, you not only promote the body's own defenses, sleep can also be calmer – especially for babies, who react most strongly to air that is too dry. Depending on the model, filters also remove dust. Pollutants are removed from the air.

Like every additional device in the house, nebulizers, vaporizers or evaporators cause acquisition and follow-up costs. Some more, others less. You can tell especially by the electricity bill. It may also be time-consuming to clean the appliance properly. But if you don't do this, the little helper can become a germ slinger. Thus, the humidifier not only poses a health risk, it also poses a risk of injury, for example, if a child plays with it. In addition, it can be a problem for noise-sensitive people if the humidifier works too loudly.

– Increases the humidity controllable – Provides a healthy indoor climate – Keeps humidity constant – Prevents dehydration of the body – Promotes the immune system – Effect on good baby sleep – Purifies the air – Especially effective in winter

– Cost-intensive – Incorrect hygiene favors germs – Electricity consumption – Causes noise – Cleaning effort – Source of danger

Is a humidifier useful for babies??

If the air in the room is too dry, it can affect the well-being of everyone in the room. May cause problems with the respiratory tract, voice or eyes. Since the youngest children are particularly susceptible in this respect, a humidifier in the children's room makes perfect sense – especially during the winter, when heating is increased and the air in the room dries out easily. If the baby also suffers from dry skin, sufficiently humid air is especially recommended.

Since a baby's immune system is still very vulnerable, you must pay particular attention to hygiene when using a humidifier. Poorly cleaned equipment or a water supply that is too warm could spread germs in the ambient air. Not every type of device is equally suitable for the children's room. Some generate heat. Could become a source of danger.

Humid room air is like the delicate skin of a baby: It only needs help from the outside when something is wrong. That's why a humidifier makes sense for babies when the conditions in their room deviate from the optimum.

When to use a humidifier for children?

Especially in winter, it happens quickly: One heats neatly, so that the little ones have it comfortably warm. Because it is too cold outside, some people prefer not to ventilate regularly. Or it is better to do without plants in the children's room. Throws such a natural air balance out of the race. There are many reasons why the air in a child's room is too dry.

If the air in the room is still too dry, even at a temperature of around 20 to 22 degrees and regular airing, you should look for a humidifier. Especially if children are often in their room to play, their bodies can react to dryness with many symptoms: Dry eyes, irritated cough or itchy skin are not uncommon. The child itself will usually not even notice that something is different than usual. And even if, very few tell the parents.

With regular humidification in the children's room or bedroom, you can ensure that the room climate is ideal for your child – regardless of whether he or she is sleeping or playing. The guideline for the optimal humidity in residential-. Working rooms are in the range of 40 to 60 percent relative humidity. In children's rooms, the air humidity should be at least 45 percent, because the bodies of the youngest have a comparatively higher water content and therefore react more sensitively to dry room air than adults. Problems can arise with sleeping or the general state of health.

Excessive humidity in a child's room can also have negative consequences. In addition to possible mold growth and damage to furniture and wallpaper, the body reacts here with excessive sweating, whereby the body's own temperature balance no longer functions properly. In damp rooms, fungi or mites also have optimal conditions to thrive.

With the help of a hygrometer, the value in the children's room can be determined daily. It should be as constant as possible. The room temperature also plays a role in the measurement. For sleeping, experts recommend a temperature of approx. 18°C. When playing, it should be a few degrees more (20°C – 21°C). The appropriate humidity level is in an ideal range for babies if it is between 50% and 55.

What should a humidifier for baby and child be able to do?

A humidifier should provide the room air with the desired moisture content. It goes without saying that this is not automatic. It depends above all on the external conditions whether a certain model is suitable for your household. With children, moreover, variable functions, safety and cleaning effort are also important.

Of course, the design and price of a humidifier are also of interest. Depending on the technology and size, the prices are well into triple digits. Most devices have a simple design. Do not attract further attention in the apartment. For the children's room, aspects such as colors, lights and animal figures are tempting, such as the InnoBeta Waterdrop humidifier. More important than the design, however, is the functionality of these little helpers. And the following aspects are important.

Size and capacity

With the size of the device also grows the space for the water tank. Accordingly, you need to refill the container less often. Mini humidifiers are sufficient if the children's room is not particularly large or if the air humidity does not deviate greatly from the ideal condition. Most devices are around 30 centimeters high. They are conspicuous by their size in the room. The capacity of the water tank varies considerably: The six humidifiers in our comparison range from 1.8 to 6 liters.

Room humidifier performance

With its power, a humidifier can only cope with a certain size of room. So when choosing a device, the square meterage plays an essential role. A humidifier for 15 square meters does not manage to noticeably increase the humidity in a 30 square meter room. The positioning in the room also has an influence on humidification: standing against the wall, the unit distributes the humid air more slowly in the room than if it is placed in the middle of the room. If you want to treat large rooms with a humidifier, you have to pay attention to the specifications already when you buy it.


A humidifier in a child's room can also be used during sleeping hours. It must therefore not work too loudly. Some devices have a sleep function that reduces the volume. With the Philips HU4814/10 this is the case. If the volume permanently exceeds 50 decibels, this is not only a potential sleep disruptor, it can also go on your child's ears over time. In this respect, ultrasonic humidifiers are particularly well suited for children's rooms, as they hum relatively quietly. A circumstance that could even promote the sleep of your baby.

Energy efficiency and consumption

Devices with low energy consumption are particularly advisable if they are to be in constant use. An automatic switch-off function, as soon as there is no more water, reduces unnecessary energy consumption. The evaporators consume by far the most electricity. Ultrasonic nebulizers and evaporators do not make as much of a difference here.


An electric humidifier brings a more or less long cable into the nursery, which can easily become a tripping hazard. It also invites small children to play and explore. Ideally, you should place the device in such a way that your children cannot easily reach it. Devices that generate heat are not suitable for a child's room, as there is a risk of burns for a curious child's hand. This applies not only to the hot steam, but also to hot water. It could leak if your child knocks the device over. In this case, it is also very good if the water tank can not open immediately. Devices in which filling with water is somewhat awkward, thereby bring a higher degree of safety.

Features and accessories

A humidifier for the baby, which checks its own performance with an integrated hygrostat, saves you an additional device. It measures the current humidity. Decreases or increases the working capacity of the humidifier if necessary. The Philips HU 4814/10 works in this way. In addition, features such as a timer for temporary operation. A sleep mode for the time during naps very helpful. The Beurer LB 55 comes with additional anti-limescale pads, which prove their worth with particularly limescale-laden water. If spare parts and consumables are already included in the purchase of the product, this will save you money for the time being. However, do not underestimate the follow-up costs.


How easy it is to refill the water? The more often you have to do this, the easier the mechanism should work. If you don't like to study instruction manuals, the device should be largely intuitive to use. You can't go far wrong with the Wick cold mist humidifier, for example. It can be easily switched on and off via a rotary knob. For this you do without additional functions.

Hygiene and cleaning

If you want to clean your humidifier, a complicated setup is counterproductive. If the parts to be cleaned are easy to remove or even dishwasher safe, it makes the work much easier. To ensure that bacteria don't stand a chance with the humidifier, the water tank should be at the top of the cleaning list. It is not enough to just replace the water. As a breeding ground for germs or fungi, the humidifier quickly becomes a health hazard. You should clean the tank regularly with a cleaning agent and, if it is suitable, rinse it with hot water.

If you use tap water, lime deposits can become a problem. They affect the performance. Also provide a good breeding ground for germs. It can help here to use only distilled water from the outset – which in turn goes into the money.

Hygiene in connection with a humidifier also includes keeping an eye on the room air. It should not permanently rise above 60 percent due to the operation of the device. In rooms that are too humid, mold can form more easily.

Evaporate, vaporize or nebulize

Not all humidifiers are created equal. The devices make use of different technology to provide the room climate with humidity. Water nebulizers increase humidity via tiny droplets. Vaporizers work with heat. Evaporators regulate the room humidity particularly gently.

A humidifier comparison shows that not all methods are suitable for a child's room. For a quick overview, we have compiled the most important features for you here. We take a more detailed look in the following sections.


A classic water evaporator makes use of the transition of water from a liquid to a gaseous state. The water is heated until the boiling point of 100°C is reached and the liquid enters the room as vapor. This very quickly increases the humidity in the room air.

Where such heat is generated with electricity, the energy costs are always increased. Therefore, electric vaporizers are quite expensive in operating costs. If the water is also very calcareous, residues can settle in the device. This in turn can lead to the water no longer being heated properly. Residues should therefore be removed as quickly as possible.

It is precisely the heat with which a vaporizer scores as a humidifier: the high temperatures kill germs before the steam reaches the ambient air. The device is therefore far ahead in terms of hygiene. However, the escaping steam also poses a risk to a child in whose room the device is placed. In the immediate vicinity could be scalded by the steam. A vaporizer that does not have an integrated hygrometer could also quickly do too much of a good thing: Once the humidity has reached the threshold of 60 percent, the device should not produce any more water vapor.

– Fast humidification of room air – Effective even in large rooms – Hygienic due to heat – Small heating effect

– High power consumption – risk of over-humidification – heat source poses potential danger to children – limescale deposits impair function

You cannot operate a vaporizer in a child's room without supervision. Not only the curiosity of the little ones can be their undoing, but also a lack of caution can lead to a child getting hurt. Since the device also quickly provides more humidity in small rooms, the content in the air does not really remain constant, but fluctuates again and again. As a humidifier in the children's room, evaporators are therefore only suitable to a limited extent. The vaporizer from Beurer should therefore be purchased immediately with a suitable knife for the humidity and not be operated without supervision, even if it is suitable for the nursery according to the manufacturer.

Ultrasonic humidifier

An ultrasonic nebulizer uses a technique that creates tiny water droplets from water. These droplets are then blown into the room air via a fan and distributed there. Such devices are available in many sizes and power levels, so provide you with a suitable solution for every child's room. The Medisana humidifier, for example, covers up to 30 m². In any case, they should also measure the current humidity and be able to react to it to avoid overhumidification.

Since the water is only transported directly into the room air in a different form, bacteria and germs can also get into the room air via humidifiers with ultrasonic technology. One of the features of an ultrasonic evaporator is that a fine precipitate can be found in the vicinity of the device. It should therefore be positioned in a place where direct humidity does not cause problems.

– Available in many sizes and strengths – Energy consumption quite low – Comparatively quiet

– Distribution of bacteria and germs possible – Regular cleaning necessary – Increased humidity in device environment possible

Aroma oils can be used with this technology. What can be very pleasant for adults, may cause problems for the smaller inhabitants of the house. Whether an aromatizing humidifier is the right choice for babies remains to be considered. However, the device itself is suitable for use in the children's room: Ultrasound, unlike the vaporizer, does not cause heat.


Whoever reaches for an evaporator may be surprised by the low power compared to other devices. The room air does not become more humid as quickly as with vaporizers or ultrasonic devices. However, water evaporators are very favorable in terms of energy consumption. There are even passive devices that do not need electricity at all, because they are coupled to another heat source (for example, the heater). However, these are usually simple containers filled with water. If the water evaporates slowly, it is a breeding ground for bacteria and germs. However, these do not become dangerous in the room air: the water does not enter the room air directly in a gaseous state along with its germs.

The electric variety offers water to the room air on a humidified surface, and the air absorbs moisture as it circulates. A fan helps with this air exchange. Carries the humidified air back into the room. At the same time it sucks in still dry room air.

With an evaporator, it is not possible for the room to become too humid because the unit is set to too high a capacity. The laws of physics play out their advantages: At some point the air is saturated. The air in the room, if it has already reached an appropriate level of humidity, cannot absorb any additional moisture. Because of the advantages, evaporators are the most suitable devices for a child's room.

– Energy consumption low – Can not humidify too much – Also possible without power supply – Germs do not get into breathing air

– Humidification performance lower in comparison – regular cleaning essential

Not clearly can be assigned a further effect with the evaporators. The fan causes the temperature in the room to drop. This can be a positive side effect, but may be unpleasant in winter when the ambient air becomes cooler while playing.

Humidifier or air washer

Unlike a humidifier, the primary purpose of an air washer is not to increase the humidity of the room. The device is rather aimed at freeing the air from particles and pollutants. For this purpose, the air in the room is sucked in and passed by a rotating unit, which is covered with a film of water. The particles in the air remain there. Are washed away by water. The clean air exits the device again. The fact that it contains more moisture than before is a pleasant side effect if the air in the room is too dry.

How these special devices work exactly, you can read in our article about air purifiers and air washers. As an alternative to a humidifier, it comes into consideration especially if your child benefits enormously from clean air as an allergy sufferer or due to a respiratory disease.

Set up the humidifier correctly

A good place for humidifiers is out of reach of children. This may not be so easy to achieve in a child's room when the child grows up. Therefore, it should be taught from the beginning that only an adult should touch the device. Some places in the room are not as suitable for placement as others. On the windowsill or on the floor, depending on the device, precipitation could occur, which then causes the window to mist up or puddles to form. This can have unpleasant consequences for wooden floors, laminate or carpet.

When steam or mist from the device flows into the air, the humidifier should not be too close to a wall. The baby's sleeping area should also be sufficiently distant. So that the power cable does not become a tripping hazard, the device should be set up in the immediate vicinity of a power outlet. You can also take these tips to heart if you are buying an air washer.

Which humidifier is best to buy?

The disadvantages of one system are the advantages of the other – and vice versa. Therefore, ultrasonic humidifiers are not generally preferable to vaporizers or not. Depending on the system, a humidifier is also not exactly cheap to buy and operate. Nevertheless, you should take a close look at the quality and decide whether you would rather dig a little deeper into your pocket.

The humidifier should not be missing the automatic shut-off and a good cleaning option. Hairline cracks and manufacturing defects are also taboo. You should make sure when buying that there is no liquid leaking anywhere where it doesn't belong. Before buying, it is best to think about the following criteria:

– Which Room size I want to humidify? – Does the Power consumption an important role? – How important is the Cleaning effort? – Needed Additional functions like timer and fragrance? – Are my children sensitive to the Volume? – I like to invest a few minutes in Handling? – How important are results from a independent humidifier test?

Safety in the children's room also requires a suitable installation location, regardless of which technology you choose.

Humidifier under test

In May 2019, the magazine okotest last conducted a room humidifier test. Among the eight devices tested were one vaporizer, two evaporators and five ultrasonic nebulizers. The result was particularly poor for two ultrasonic humidifiers: They pollute the room air too much with germs. The Philips 4811/10, on the other hand, performed very well. It was test winner – among other things, because hardly any germs get into the air and the device provides quiet as well as effective humidity.

For okotest, the test criteria for humidifiers included the maximum output per hour, the operating instructions, the material and the emission of bacteria and mold into the air. The latter was cleaned strictly according to the instructions in the user manual. Devices were devalued if they measurably threw too many bacteria into the air or if water precipitation accumulated on the floor.

So far, Stiftung Warentest has not yet put humidifiers under the microscope. However, it quotes the results of the Swiss test magazine Saldo. It gave evaporators the best balance – especially with regard to germs in the air. Here, too, the Philips 4811/10 scored "very good", together with a model from Boneco.

Is it allowed to use distilled water?

Distilled water is formed when normal water evaporates and that vapor subsequently condenses. In contrast to the original liquid, distilled water contains hardly any trace elements, ions, salts, organic matter and microorganisms. For the body, excessive consumption is not advised – in the humidifier, however, it can be a good alternative.

Since it has already been heated, it is largely germ-free and thus helps with the hygiene of the device. However, it is often equated with demineralized water, which can be purified by other processes (e.g., water purification).B. mineral removal by an ion exchanger) has been treated. This liquid is not really germ-free. However, lime is also removed from the water – and this is ideal for your appliance, especially if your tap water contains a lot of lime. Since distilled water for humidifiers would be quite expensive if used constantly, you can also freshly boil your tap water before putting it into the device to support hygiene, however.

Alternative room humidification

There are some alternatives in room humidification that can definitely solve the problem of dry air. This is how houseplants with large leaves particularly contribute to a good indoor climate. But in children's rooms they not only take up space, they would also be at the mercy of your child's love of experimentation. You can provide a short-term remedy by placing the clothes drying rack in or in front of the child's room. But you don't achieve a long-term effect with it. Leaving the doors open when showering or bathing can also temporarily provide a little more humidity – but only if these rooms are not too far from each other.

If you're building a new house or renovating, you can score with low-temperature heaters: They dry out the air less. Building materials such as clay plaster also ensure constant air humidity. For those who can't necessarily resort to structural changes, humidifiers without electricity might help.

Humidifiers for heating

A small jar hanging from the radiator – you may already know this from your parents' or grandparents' households. It is a simple way of humidifying the air, which used to be almost part of good manners.

The advantages are obvious: it is a very inexpensive, easy to clean and simple to install type of humidification. It does not cause noise. Can be filled very quickly. You simply place or hang the small vessels on your radiator. Provided there is one in the nursery. With today's proliferation of underfloor heating, this is likely to become a problem for one household or another.

6 humidifiers in test comparison 2022

Radiator humidifier: simple and cheap

Another disadvantage is that humidification cannot be controlled well in this way. In addition, the function is linked to the heating: If it is not on, the air is not humidified. Then the water should not stand too long, because it can attract insects or promote the formation of germs. This in turn is very unfavorable if your child decides to take a closer look at the device. Humidifiers for the fireplace or the heater therefore belong rather in the common rooms of the adults.

Aroma humidifier

In connection with ultrasound devices, we have already pointed out that the use of aromatic oils is not recommended indefinitely. Your baby might react to the fragrances with an allergy that you didn't know about until now. In addition, the sensitive sense of smell can be easily overwhelmed if the concentration of the scent is too strong.

Where adults can enjoy a very specific scent, it's simply not necessary for babies – just as you shouldn't over-season their food. They have a lot to discover with their senses anyway. These additions are rather something for adults or for special occasions. For example, an essential oil can help during sleep when the offspring has a bad cold. Very importantly, it must be specifically approved for children. This is not the case with all eucalyptus, camphor or peppermint preparations.

If you care about a diffused aroma humidifier, like the InnoBeta Waterdrop, you should rather use it in rooms where your child does not spend most of his or her time. It can certainly serve your own relaxation, if you allow yourself a little baby time out. If your device can also be used with aroma oil, you can find out best from the description. Some humidifiers are already advertised as aroma diffusers, where the pleasant scent is one of the main features.

Conclusion – for an ideal room climate

Humidifiers provide a pleasant room climate in the children's room and in other rooms when the air is otherwise very dry. Eyes, skin and mucous membranes are grateful for the extra moisture, which, however, should not exceed a certain level. If used excessively, humidifiers can cause mold in the room because the humidity is constantly too high. A hygrometer will help you keep a balance. In terms of energy consumption, warm humidifiers perform worse than their cold counterparts in the test. Therefore, consider how often and where you want to use them.

If you follow the instructions for use, a suitable device can bring soothing moisture into the house and children's room. Baby benefits from the humidifier especially if he otherwise reacts strongly to too dry air. With sufficiently moist mucous membranes can survive especially the winter healthier. Especially sick children are grateful for the extra humidity.

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