How does air collect dust?

Filter out dust with an air purifier - finally take a deep breath ?!

House dust is a real health problem for allergy sufferers. However, the high levels of particulate matter in our environment bothers all of us. So does it make sense to use an air purifier to filter dust out of the air at home? Which air dedusters are especially suitable for this and what do you have to consider?

Dust is a constant companion wherever we go. It cannot be avoided. House dust in itself is not a problem for most of us. Dusting is annoying and we might get a coughing fit if we stir up too much dust while tidying up in the basement. For others, however - mainly allergy sufferers - dust causes severe health problems. Itching and difficulty breathing are just two examples.

Illnesses or allergies from dust and bad air increase more and more. There is usually little we can do about the causes of dust. In the meantime, however, numerous technical aids and devices are offered that are intended to improve the indoor air in our apartments. With you we should finally take a deep breath and supply our body with clean, healthy air can.

Is it really necessary and useful to use an air purifier to filter dust from the air in closed rooms? Which device models are suitable for whom? And what do you have to consider if you want to buy and operate an air purifier? We answer these questions for you in this article.

The exposure to dust and fine dust is increasing

Normally, regular ventilation is the best way to keep your home away from too much dust. Unfortunately, the outside air is no longer really clean in many areas. The high levels of particulate matter in our cities is not only present in the news, we can literally smell it too. The health damage to the heart and lungs, for example, caused by fine dust is well known.

If you live on a busy street, ventilation does not improve the air in your room; you only get more dust into your apartment. In winter we rarely ventilate, sometimes we spend the whole day in closed rooms without a breath of fresh air.

The dangerous thing about fine dust is that it settles in the lungs and can no longer be breathed out so easily. If you constantly inhale fine dust, the lungs are "dusted" layer by layer. The lungs can only regenerate and break down the accumulated dust if they repeatedly get a “breathing space”. An air purifier against dust is definitely one for each of us sensible investmentto improve the air in his home or office and protect his health.

By loading the video, you accept YouTube's privacy policy.
Learn more

Load video

What is dust anyway and how is it created?

Although dust usually looks the same to the naked eye, dust consists of many different particles. It is not possible to make a precise distinction between house or coarse dust and fine dust. The transitions are fluid, there are dust particles of every size.

  • Natural dust particles are created by the erosion from rock, sand, other minerals (for example from mountains or deserts) or through volcanic ash.
  • Dust can too of vegetable, animal and human origin and consist of plant pollen, fungal spores, microorganisms, hairs and flakes of skin.
  • Dust is created in the combustion All kinds of substances, forest fires, but also fires in open chimneys and wood heaters (and candles!) cause large amounts of fine dust. In the same way, cigarette smoke is a bad producer of fine dust.
  • A significant proportion of the fine dust pollution is exhaust gases from the Car, air and ship traffic attributable to. In addition to the exhaust gases, a lot of dust is also created by the abrasion of tires and brake pads on the road. It is no coincidence that cities with lots of traffic jams and stop-and-go traffic (such as Stuttgart) have the highest levels of particulate matter.
  • Industrial companies and power plants blow masses of dust into the air we breathe through their chimneys.
  • Building materials, paints and chemical substances on and in buildings decompose to dust, some of which is highly polluted.
  • We also produce dust in our own apartments, for example when cooking and roasting. Lately it has been known that specifically Laser printer can cause extremely high levels of particulate matter in the room air.

Every tenth German is allergic to house dust

Most of us have only started thinking about dust since the public debate about particulate matter. For a special group of people, however, normal house dust has been one for a very long time Threat to health and quality of life: For House dust allergy sufferers. You constantly have to struggle with a blocked and runny nose, itchy and watery eyes, sore throats and headaches and rashes. Severe allergies can even trigger asthma.

Strictly speaking, house dust allergy sufferers are not allergic to dust at all, but rather to the excrement of mites, which are preferably found in house dust and feed on dead skin cells, for example. That is why the house dust allergy must correctly be called house dust mite allergy.

According to the German Allergy and Asthma Association e. According to V. around every tenth German suffers from it. For those affected, it is of particular importance to keep their own home and the room air as dust-free as possible. How effective is it to fight dust with an air purifier at home? Are air purification devices a suitable means of providing relief from house dust mite allergies?

Air purifiers against dust are for allergy sufferers a Step to improvement

In all fairness it has to be said that the majority of dust mites are not floating around freely in the air. Mites live in the home mainly in home textiles such as bed linen, on table surfaces and carpeted floors. That is why air purifiers are no universal solution with house dust mite allergy. That alone will not get the problem under control. Allergy sufferers cannot avoid using special bed linen, for example, and washing them regularly. You have to constantly wipe and vacuum clean all surfaces in the apartment from house dust.

Nevertheless, air purifiers are by no means useless against dust. Anyone who is allergic or knows one knows that even small improvements can make a big difference. First of all, air purifiers remove a large part of the dust that is suspended in the air. First of all, this dust is no longer inhaled. Second, this dust can no longer settle on floors or furniture and serve as food for the mites.

So it is a good measure to use an air purifier to filter dust out of the room air. Together with the other necessary measures, you can combat house dust in your room air and feel comfortable in your home.

Filtering out dust with the air purifier - which models are best?

Almost all air purifiers work in a similar way to a vacuum cleaner: They draw air into the device electrically via a fan, so that dust and other particles get caught in the air purifier. They can basically be divided into three types: Air purifier with filter system, air washer and ionizers. Some models combine these technologies. Which device you choose depends on your goal, how complex the operation of the devices can be and how much money you want to spend.

Air purifier with filter systems

The filter systems of air purifiers are very diverse. Most devices use a combination of different types of filters: For example, coarse pre-filters, activated carbon filters and HEPA filters. Special HEPA filter are highly effective filters that prevent even the smallest particles from passing through. When the air purifier filters dust from the air, it simultaneously frees the room air from many pollutants, mold spores, odors and even bacteria and viruses.

From cheap to extremely expensive, the available range offers something for everyone. The big, unfortunately unavoidable disadvantage of such air purifiers is the high running costs for the replacement filter. Depending on the model and intensity of use, you will have to replace individual filters or the entire filter system after a few months. Some of the filters cost more than 50 euros.

In terms of filter performance, such air purifiers are the ultimate. If you not only want to keep your apartment dust-free, but also all around germ-free and pollutant-free air Value should you choose a filter-based air purifier model.

The ultra-quiet HEPA air purifier from Marreal for rooms up to 60 square meters has received excellent customer ratings on Amazon.

Marreal AP3001B HEPA air purifier up to 60m², ultra-quiet, with fine dust sensor, particle display, ...
  • Air purifier AP3001, white, cleans your room air with 6 filter systems of pollen, bacteria, fine dust and bad ...

Air washer

Air washers are also suitable as air cleaners against dust. They act like a permanent downpour that washes the dust out of the air. Inside there is a roller that is permanently moistened with water. The room air is directed past the roller. Coarse dust particles - also animal hair or pollen - stick to the roller and are washed off in a water basin. The passing air becomes additional moisturizes.

Fine dust or pollutants, however, are not bound well in the water and go back into the air. The water in air washers must be changed every one to two weeks to prevent germs from developing. You don't have to change or buy filters for this. Some air washers also have a pre-filter in which coarse dust particles or hair get caught. This way the water stays clean a little longer. Air washers are therefore recommended if you only want to roughly filter your room air and humidify your room air and you do not mind regular cleaning.

Air washers are not recommended, especially for those with house dust mite allergies, because too high humidity (> 50%) promotes the reproduction of mites.

A popular model is the LW 220 air washer from Beurer, which is suitable for rooms up to 40 square meters.


Ionizers (sometimes called ionizers) are one relatively cheap solution to fight dust with an air purifier. They charge the room air and the dust particles and pollen it contains electrically. As a result of the charge, these particles combine to form “lumps” and, due to their higher weight, fall to the ground.

If you don't vacuum regularly or move around the room a lot, the dust is easily kicked up again. Some models therefore attract the charged dust particles via a metal plate and trap them in a container. Ionizers are very easy to maintain, you only have to empty the dust container every now and then.

Ionizers as air purifiers against dust are, however controversial. Ozone is created as a by-product of the electrical charge. In high concentrations it can irritate the respiratory tract or cause headache. It is therefore essential to find out more about how to use an ionizer against dust correctly.

The Tevigo air purifier / ionizer for rooms up to 45 square meters is currently one of the best sellers.

Buy air purifiers against dust: You should consider this beforehand

The selection of air purifiers against dust is huge, you can lose track of it. To find out which device is really best for you, ask yourself the following questions:

  • Is the performance of the device sufficient for mine Room size?
  • Is the filter suitable to reduce house dust?
  • How often do I have to change filters?
  • How much do the replacement filters cost?
  • How high is that Power consumption?
  • How loud is the device in operation? Can I sleep while the air purifier is on?
  • Does the device offer a good price-performance ratio?
  • Which service-Services does the manufacturer offer? (Guarantee, maintenance, advice)

With this information you can make a small selection of suitable devices and finally decide on your favorite. Thanks to the right of withdrawal for online orders, you do not take any risk - if the air purifier does not remove dust as you expect it, you can exchange or return it.

Where should you place the dust extractor?

The best model with the most effective filtering effect is of no use if you place it in the wrong place and the dust simply steers clear of it. That is why we are giving you some tips on where to ideally place the air purifier against dust.

  • Close to the polluterto catch the dust directly at the source: For example in the washroom (clothing fibers), in the kitchen or next to a laser printer in the office.
  • In the bedroom: You sleep more restfully and wake up fit because you can breathe freely and your lungs can regenerate.
  • In rooms in which you spend a lot of time: They prevent dust from being constantly blown up.
  • Place as freely as possible in the room: Do not place the air purifier behind a sofa or piece of furniture so that the air circulation and the filtering effect are not impaired.

Filtering dust out of the air with an air purifier: a conclusion

In times of increasing air pollution and high levels of particulate matter, healthy air has become a scarce commodity. However, our home should be a place where we can take a deep breath and relax. For house dust allergy sufferers in particular, it is very important that the room air is as dust-free as possible.

An air purifier against dust is therefore an effective means of creating a good climate in our four walls and promoting our health. Air purifiers help allergy sufferers to relieve their symptoms and achieve a higher quality of life. With the tips from our article, you can make an informed decision as to whether you want to buy an air purifier and which device is best for you.

Worth reading from the magazine:

Helpful technical advice: