What filters are installed in modern air purifiers and their features

Nowadays, keeping indoor air healthy and clean is a particularly hot topic. Here come to the aid of modern air purifiers equipped with various filters. This article will describe the types of filters, the appropriateness of their use in air purifiers and explain why they are so important for health.


  1. The need for air purifiers.
  2. The purpose of pretreatment filters.
  3. HEPA filters.
  4. What charcoal filters are for.
  5. Filter fabrics and their applications.

Modern air purifiers have recently become more and more popular. They are especially relevant in large cities with high levels of pollution. These devices help to improve indoor air quality and protect human health.

What filters are installed in modern air purifiers

It is recommended to install the air purifier in the homes of people prone to allergies or other respiratory diseases. The unit works according to the filtration principle.

The need for air purifiers

Why do you need an air purifier, what kind of impurities can modern models fight? These questions are of interest to everyone who wants to protect themselves and their loved ones from the harmful effects of impurities contained in the air. Buying this device, you will clean your home or office from:

  • large contaminants — animal hair, hair, dust or dander;
  • plant pollen;
  • mold spores;
  • various microorganisms (mites, bacteria and viruses);
  • unpleasant odors.

Air purifiers are equipped with filters, and they come in different types. The most popular types among users include:

  • mechanical;
  • charcoal;
  • HEPA;
  • ionizers.

For the most effective cleaning of the room, it is recommended to use a combination of several types of filters in one device.

The purpose of pretreatment filters

Any air pre-filter is capable of trapping large and small particles. The element helps to protect the unit from rapid clogging and significantly prolongs the life of the unit. In addition, it does not require regular replacement: it is sufficient to rinse or clean it twice a month.

HEPA filters

HEPA ventilation filters are highly effective devices for cleaning the room from small particles. It captures up to 99.95% of elements with a size of 0.3 microns and larger.

The fibers inside the HEPA form a maze-like structure. It captures and traps contaminants, letting only clean air through.

HEPA filter

These air filters are very effective at cleaning rooms, but they have a limited lifespan. Manufacturers recommend replacing the HEPA filter every 6-12 months, or more frequently in some cases.

What charcoal filters are for

charcoal filtersAir activated charcoal filters are often used in ventilation systems. They are mainly required for capturing various smells and gases. They contain specially treated activated carbon.

The devices are large in size and trap molecules of various odors. However, charcoal air purifiers cannot capture the smallest dust particles, so they must be used in combination with more efficient elements.



Filter fabrics and their applications

filter cloths

Another type of cleaning elements for ventilation and air conditioning can be referred to as filter cloths. They are composed of multi-layered materials that trap even the smallest particles.

Such fabrics are widely used in various fields, including air and liquid filtration, drug and food production, manufacturing of industrial and household appliances, etc.

The products are usually installed in cleaning systems such as air conditioners and ventilation systems to keep fungal spores, bacteria, viruses and dust out. In addition, fabrics are often used in the manufacture of preliminary, mechanical and charcoal elements.

It is important to remember that the productive functioning of cleaning systems depends on their condition and regular maintenance. It is recommended to periodically check the filters, change or clean them (as recommended by the manufacturer) to ensure maximum cleanliness of the room.

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