Virus-free room air in schools and educational facilities
  1. Applications
  2. Air cleaning dust – viruses
  3. Bacteria- and virus-free room air in schools

Virus-free room air in schools and educational facilities

Trotec high-frequency air cleaners maintain the room air in classrooms reliably free from viruses with H14 high-performance filters

A sustainable new start of regular school life makes a hygiene concept that is shown to be effective indispensable to provide for virus-free air in classrooms. The coronavirus SARS CoV-2 is a huge challenge for teaching staff, cleaning staff and headmasters. Even using spraying and wiping agents in a regular manner does not provide any protection against this virus which not so much spreads by smear and droplet infection, but rather directly via the room air. The protection of pupils and teaching staff therefore requires measures that are demonstrably effective, in order to reliably reduce the airborne infection risk.

Ensuring safe presence at school requires guaranteed virus absence

Real face-to-face teaching requires personal closeness, immediate feedback via gestures, behaviour, questions and answers. Therefore, teachers can actually not do without the direct contact on site in order to perform their educational task in a realistic fashion.

However, this direct contact always carries the risk of an infection with airborne diseases. In best case, this could be flue, in times of corona it could be Covid-19. Not only since Corona times it has been highly recommended to take additional hygiene measures in addition to the regular ones: The air in the room and particularly the air for breathing must be kept as clean as possible and free from viruses or bacteria. This serves to protect the teaching staff, but also the pupils.

Clean air in the classroom protects teachers and students

Pathogenic viruses and bacteria are an invisible danger in every school. The pathogens can survive in the room air for several hours, presenting a potential health risk with every breath. Current studies prove that e.g. the Sars-CoV-2 virus can stay in the air for several hours while remaining infective.

The virus gets into the room air by means of aerosols that are emitted when breathing and speaking. Infectious viruses adhere to these tiny particles and the virus-carrying aerosols waft through the air due to their light weight and are inhaled unnoticed by other persons in the same schoolroom, for instance by fellow pupils or teachers.

Dividing school classes into two groups does not offer protection against virus-laden air

It is an elementary component of hygiene concepts to reduce class sizes in times of spreading epidemics. But no matter how small the groups are into which the pupils are divided: it does not prevent the virus from spreading through the air. Even using protective masks for mouth and nose does not entirely offer protection against direct ‘virus drizzle rain’ caused by “juicy” talking. Protective masks definitely do not offer protection from germ-loaded aerosols that are released into the room air while talking and breathing, where they will continue floating in the form of aerosol accumulations for several hours.

Any person talking loudly is sufficient to have thousands of aerosols spreading into the room air per minute. The number even increases when care workers and children sing. Indeed, protective masks are a first important approach to reduce the risk of a direct droplet infection with the SARS-CoV-2 virus. However, this measure does not protect from a far greater danger of infection – accumulations of aerosol particles floating freely in the room air!

Such aerosol clouds even overcome physical barriers like sneeze guard barriers or separating walls. This is how particles of aerosol can easily access the respiratory tract or the eyes. The long time aerosols stay in the air are the reason for another problem: Since aerosols spread with air currents, the room air will be mixed every time the door is opened.

Protecting teachers and pupils with a 360-degree hygiene concept

Only a coordinated all-round solution of all possible hygiene measures and additional high frequency air purification reliably and permanently reduces the risk of infection. So don’t exclusively rely on physical separation, protective masks and washing hands regularly for protection against infections. Aerosol particles in the room air don't stick to the distance rules – as they potentially transport viruses, they are the real source of danger!


High-performance air purification creates virus-free air in classrooms

If the room air is kept free from germs and viruses, the airborne risk of infection will be minimised likewise. Trotec high-frequency air cleaners such as the TAC V+ are exactly designed to perform this task, for they efficiently and quickly reduce the intensity and time aerosol accumulations and suspended matter stay in closed rooms, creating an education facility with an extraordinarily reduced risk of infection for both teachers and pupils.

Directly at its site of installation, the mobile air cleaner TAC V+ creates a “clean zone area”, flooded with purified air and filtered from viruses. Within this zone, the surrounding air nearly completely stays free of airborne germs and viruses because the TAC V+ is able to take in large volumes of contaminated room air and to carry out effective H14 HEPA high-performance air filtration. Moreover, the device is able to purify room air zones in a flexibly adjustable manner with clean air that has been filtered from viruses and aerosol particles.

Effective against bacteria and virus accumulations

Trotec high-frequency air cleaners are equipped with HEPA high-performance air filters of class H14 which filter out more than 99.995 % of all fine suspended particles larger than 0.1 µm with a transmittance of only 0.005 %. Or in other words: No more than five of 100,000 particles pass the H14 filter. Thanks to this unique feature, these kinds of high-performance filters are also used in operation theatres or comparable hygienically sensitive areas in order to produce clean air. In this way, you create optimum conditions to keep the room air and breathing air in classrooms, staff rooms, school administration areas, break rooms, halls and foyers free from germs and viruses in times of spreading epidemics.

Well-known viral strains such as SARS-CoV, MERS-CoV or Covid-19 have a particle size of 0.005 to 0.1 µm. Most of the time, they form accumulations with other particles (such as saliva or suspended matter) which increases their size up to 0.4 µm or 0.5 µm. These accumulations are referred to as germs and will be filtered out reliably by the Trotec H14 air cleaning filters.

All H14 HEPA high-performance air filters from Trotec meet the highest quality standards that are obligatory for bacteria and virus filtration.

  • Each H14 high-performance air filter is tested individually and is assigned its respective serial number
  • The test report is enclosed as certificate in duplicate with each H14 high-performance air filter
  • The original test certificate can be filed with the documents for the device. If required, the copy can be attached to the air cleaning device.
  • HEPA H14 high-performance air filters are tested in compliance with EN 1822 and EN 60335-2-69.

Also suitable for any TAC air cleaner with H13 filter

You can also insert a HEPA H14 high-performance air filter from Trotec into your TAC air cleaner if you already possess a TAC device. The H14 filters are available as an accessory, e.g. for the professional air cleaners TAC 3000, TAC 5000 or TAC 6500. Simply replace the H13 filter in the filter compartment with a H14 HEPA high-performance air filter.

Professional air cleaner with H14 high-performance air filters from Trotec

Virus-filtered clean air in music schools or at choir rehearsals

Apart from its use in public or private schools, the TAC V+ is also ideally suited for virus filtration in other educational facilities like for example music schools

Music lesson or choir rehearsal – the TAC V+ creates filtered room air that is free from viruses

The transfer of knowledge in schools requires room for personal proximity to teach and learn. This principle applies to primary and secondary schools as well as to music schools or other educational facilities. When not required for lessons, school rooms are often made available to specific associations like for example choirs to hold their choir rehearsals.

The TAC V+ is also the ideal air purification solution for such school events, in order to provide for aerosol-free room air without aerosols carrying viruses and thus without a corresponding infection risk. The high-frequency air air cleaner TAC V+ draws in the ambient air near the floor and leads it through an effectively attuned filter system. The last filter stage of the latter is a unique H14 high-temperature lamellae particulate air filter with thermal filter decontamination. This H14 HEPA filter is treated thermally at regular intervals and heated to over 100 °C, which practically destroys all viruses that are filtered out. Therefore infectious viruses can no longer enter the ambient air from the filter. Instead, the TAC V+ only blows virus-free, filtered clean air back to the room in a draught-free fashion via its specially formed blow-out tower!

In particular for musical activities and especially when singing together, the use of the TAC V+ can be an effective prophylactic measure against the spreading of aerosols carrying viruses. Since singing transports aerosols into the room via the breath in an especially wide radius and can float there in the room air for several hours. The louder the singing, the wider the spreading radius.

Only the high-frequency air cleaner TAC V+ is able to effectively and quickly reduce the dwell time and intensity of aerosol and particle accumulations carrying viruses in closed rooms and in this way create a safe environment with a substantially reduced risk of infection for teachers, music students or choir members. The virucidal effectiveness of the TAC V+ has been scientifically proven!


High performance air cleaner TAC V+. Effective protection against aerosols and viruses in the air.

This product video will tell you all about the virus protection effect, the function and the advantages of the TAC V+ high-performance air purifier from Trotec. According to the current state of science, the coronavirus is transmitted in over 80% of cases by aerosols in the room air. The aerosols contaminated with viruses are produced when speaking, coughing or sneezing and often remain in the room air for a very long time. Inhaling the infectious aerosols can infect people in the room with pathogens. Trotec offers the solution for this: The TAC V+ high-performance air purifier filters the air with an efficiency of 99.995%, which corresponds to the air quality of operating rooms. The room air contaminated with aerosols is diluted, pressed to the floor, sucked in and filtered. In the vicinity of the air purifier, aerosol and virus-free clean air zones are created. The viruses bound in the filter are automatically killed by heat, so that the filter remains hygienically clean for a long time. By using the TAC V+ air purifier from Trotec, you will protect your employees, customers and guests. Ideal for, for example, restaurants, fitness studios, hotels, open-plan offices, medical practices, shops, and supermarkets, etc. So that finally more people, customers and visitors can stay indoors again without the risk of infection.

Effective air purification technology for clean breathing air

The aerosol accumulations are invisible to the naked eye and spread several metres into the room, flowing through interior spaces as swathes of fog do – see the following real-time video: The TAC V+ sucks in large volumes of potentially contaminated air near the ground, filters out nearly all viruses and suspended matter within minutes and generates clean air filtered from viruses which is guided back into the room. The result is that suddenly occurring accumulations of aerosol are diluted with clean air in your breathing area to such an extent that virus load and risk of infection will be significantly reduced! Just as the room is entirely foggy at the start of the video to be completely fog-free after the treatment in the end, the TAC V+ can also free your room air from particulate matter, fine particulates or aerosol accumulations carrying viruses.

Aerosols and the corona virus: This is how the virus spreads through the indoor air

While larger droplets do not fly far when speaking and quickly sink to the ground, the smaller and lighter aerosols float in the air for several hours and are distributed throughout the room. The TAC V + air purifier offers reliable protection against infectious aerosol particles. The room air is cleaned with high frequency and infectious viruses are filtered out and inactivated in the new HEPA filter.

Our recommendation for virus filtration in schools and other educational facilities

The Trotec high-frequency air purifier TAC V+ with H14 high-performance filtration

The TAC V+ takes in the virus-infected air, filtering it with the HEPA technology whereupon they transmit it back to the room air

The vertical construction of the mobile high-frequency air cleaner TAC V+ serves for establishing particularly efficient “clean zone areas” with surrounding air filtered from viruses. Setting up several devices with some distance in-between will create clean air environments with a low aerosol concentration for classrooms, school break areas, or areas for study periods. Moreover, the mobile TAC V+ can be repositioned in no time, making it possible to utilize it flexibly for a variety of rooms.

High-frequency air purification eradicates accumulations of aerosol particles in minutes

By deliberately positioning several high-frequency air cleaners of type TAC V+ or TES 200, pupils and teachers will be way better protected from suddenly appearing droplets and accumulations of aerosol particles. These will be filtered out within the shortest time due to the high air change rate. Besides, areas will be permanently filled with large amounts of virus-free room air which will significantly reduce the risk of infection in the “clean zone area”.

Special H14 high-performance air filter with thermal self-regeneration function

This air cleaning performance is made possible by a synchronous system of efficient prefiltering and final particulate air filtration, provided by the integrated H14 high-performance air filter in compliance with EN 1822 (ISO 45H filter ISO 29463) by Trotec in a special heat-resistant version. This special filter is integrated in the devices TAC V+ and TES 200 and is heated up in intervals which will inactivate all viruses remaining in the filter, serving for a 100 % decontamination of the filter. The thermal self-regeneration function of the special H14 high-performance air filter is unique in the world and exclusively available at Trotec!

TAC V+ and TES 200 are part of the same assembly and therefore provide the identical fan performance and HEPA air purification function. The TES 200 can, however, also be used for combined room heating, thermal decontamination of rooms and surfaces and thermal pest control. The reason for this are the additionally integrated, powerful electric heating module and enhanced programming options for various air treatment scenarios.

Thanks to their combined technology of filter and decontamination techniques which are unique in the world, TAC V+ and TES 200 provide safety by reducing the risk of an airborne infection in all areas with a lot of public traffic – ideally suited for schools and other educational facilities.
Example of use in a large classroom: With an area of 9 x 7 m and a room height of 3 m the depicted classroom has an air volume of 189 m³. Our recommendation: two TAC V+ placed in the room, set to a ventilation performance of 800 m³/h each reach a total ventilation performance of 1,600 m³/h and thus attain an air change rate (ACH) >8. In the case of a higher safety requirement, the device setting can be increased to a ventilation performance of 1,000 m³/h in each case, ensuring a total ventilation performance of 2,000 m³/h and thus an air change rate (ACH) of >10.
TAC V+ in a large classroom – installation example 1
Example of a large classroom: With an area of 9 x 7 m and a room height of 3 m the classroom depicted has an air volume of 189 m³. Our recommendation: Two TAC V+ placed in the room, set to a ventilation performance of 800 m³/h each, reach a total ventilation performance of 1,600 m³/h and thus an air change rate (ACH) >8. In the case of a higher safety requirement, the device setting can be increased to a ventilation performance of 1,000 m³/h in each case, ensuring a total ventilation performance of 2,000 m³/h and thus an air change rate (ACH) of >10.
TAC V+ in a large classroom – installation example 2
Example of use in a small classroom: With an area of 5 x 7 m and a room height of 3 m the classroom depicted has an air volume of 105 m³. Our recommendation: a centrally placed TAC V+ set to a ventilation performance of 800 m³/h, allows for an air change rate (ACH) of approx. 8. In the case of a higher safety requirement, the device setting can be increased to a ventilation performance of 1,000 m³/h, ensuring an air change rate (ACH) of almost 10.
TAC V+ in a small classroom – installation example 3
Attainable clean zone areas per air change rate

It is you who decides which safety level is suited best for your requirements in the classroom

The higher the air circulation and the respective air change rate (ACH), the lower is the time viruses stay in the room air, which results in the infection risk decreasing. The number of the air change rate is also the factor for determining the working radius of each high-frequency air cleaner.

6 ACH achieve basic protection. However, we recommend using air change rates between 10 and 12 ACH for fully occupied rooms in order to obtain significant risk protection. After all, the main objective is to prevent breathing air of different persons from spreading as effectively as possible. And even if a group of pupils requires higher protection measures e.g. because they are part of a risk group, the treatment for each clean zone area can be individually adjusted directly on each device by treating the respective zone in which the pupils are staying.


Why commercially available HEPA air cleaners are not sufficient for virus filtration in most cases

Large clean air capacity – high-performance filtration – filter decontamination – filter regeneration – noise level with large air volumes – versatility

Well thought out to a detailed level, unparalleled in its entirety: Because of these 6 advantages the TAC V+ – as is scientifically proven in several studies – ensures a technically effective and economically attractive solution to reduce the risk of infection by aerosols in closed rooms.


Large clean air capacity by high pressure and an optimum flow geometry

Only the TAC V+ has “the power to dilute”

The most important factor for reducing the risk of infection is the quick and effective dilution of infectious aerosol clouds directly at their place of origin, e.g. by a “Superspreader” – and draught-free and silently, in order to disrupt the operating procedure as little as possible! For this purpose large quantities of clean air, a high air pressure and an optimum flow geometry are required.

The TAC V+ offers all this: With a clean air volume of up to 1,600 m³/h, an optimum flow geometry and a flow pressure that is more than high enough, a circulation is established in the room within a very short time, ensuring that all the contaminated room air is effectively filtered.

Only air change rates that are sufficiently high minimize the risk of infection, this is scientifically proven. Where the effective treatment of the risk of infection by aerosol is concerned, high air change rates (exceeding a factor of 6) and therefore large volumes of clean air are indispensable, despite promises to the contrary made by other providers who advertise single to threefold air change rates per hour as sufficient.

Scientific studies have proven that the prerequisite for effective virus filtration is that the air cleaner used ensures a sufficiently high volume flow for the air change rate required, as is guaranteed by the TAC V+. In this context, the air change rate does not refer to a complete exchange of the air, but to the proportion of virus-filtered clean air that is supplied, relating to the room volume per hour.

High-performance filtration with a high filter efficiency

Only the TAC V+ is able to “effectively exterminate”

Heat-resistant H14 HEPA high-performance filter

Only H14 HEPA high-performance filters like those used in the TAC V+ can even filter the small-sized virus-carrying aerosols (0.1 - 0.2 µm) from the room air, and this at a rate of 99.995 %. Therefore the filter efficiency of H14 HEPA filters is 10 times higher than that of H13 HEPA filters with 99.95 %, as used in most air cleaners!

99.995 % or 99.95 %? This may not sound like a lot, but exactly these two decimal places make the big difference between H13 and H14 HEPA filters! Virus-carrying aerosols are extremely tiny. And “virus filters” are designed to “filter viruses”. That’s why the TAC V+ not only filters the large, but also the small-sized, highly infectious aerosols from the room air which are not even filtered out by FFP2 and FFP3 respiratory masks and therefore don’t offer genuine protection. Maximum safety is only ensured by H14 HEPA filters!

Scientific studies, however, qualify that a filter performance beneficial to the decay rate pursued can only be confirmed if the volume flow of the air cleaner and the flow speed in the particulate air filter are sufficiently attuned to one another by an adequately dimensioned filter surface, a property which at present cannot be achieved with any other mobile air cleaner than the TAC V+!

Yet, H14 HEPA filtration alone still does not provide hygiene protection to a full extent. After all, the viruses have not disappeared, they are only caught in the filter, but still active and still infectious over a longer period of time. At the latest when the filter has to be changed during ongoing operation, an extreme health hazard is posed to the staff, customers, guests, employees, etc. Therefore indispensable: Thermal filter decontamination …

Thermal filter decontamination – 100 °C for 100 % safety

Unique technology – Trotec exclusive

Fully encapsulated H14 high-temperature particulate air filter, equipped with heat-conducting metal lamellae

Only with the TAC V+ and TES 200 the special, fully encapsulated H14 high-temperature lamellae particulate air filter is thermally treated and heated to over 100 °C at regular intervals. Specially for this purpose, the filter has been developed and provided with heat-conducting metal lamellae.

This thermal filter decontamination technology is available exclusively at Trotec and offers you several unique benefits at the same time! By heating the filters, the proteins of the viruses filtered out, which are relevant to the infectiousness, are denatured, and the viruses are practically destroyed. Therefore infectious viruses can no longer enter the ambient air from the filter, for example by improper handling Furthermore, bacteria, germs and other microorganisms are additionally destroyed.

This means that 100 % employee protection can be ensured during operation and also when the filter is changed!You could say, this is the “virus airbag” for more safety. It is there when you need it – and as long as nothing happens, you won’t even notice it.

Without thermal filter decontamination an air cleaner quickly becomes a virus spreader, this is also confirmed by research

Scientific studies substantiate the mandatory prerequisite of thermal filter decontamination to ensure effective virus filtration. In fact, Prof. Dr. Christian Kähler explicitly points out this mandatory provision in his study: “To prevent the room air cleaner from becoming a virus spreader, the H14 filter should be heated to approx. 100 °C every day for about 30 minutes, in order to destroy the viruses in the filter and prevent the formation of biofilms, bacteria and fungi without using harmful chemical additives or UV-C radiation.”

Thermal filter regeneration – hygiene protection, also from inside

No filter humidity, no filter mould and at the same time a much longer filter lifetime

Thermal filter decontamination and thermal filter regeneration

Aerosol separators and virus air cleaners take effect where many people are present in narrow spaces over a longer time and exhale larger quantities of aerosols. Aerosols, whether virus-carrying or not, for the greater part consist of micro droplets – pure water, that is. Customary H14 filters may be able to “catch” these humid aerosols, however, they also catch additional problems. Since the increasing humidity in the filter causes it to start fouling more quickly. As a result, the filter resistance increases, constantly reducing the amount of clean air emitted and thus significantly reduces the filter lifetime. The fast fouling of filters at high loads of aerosols has been scientifically proven by field tests.

Moreover, the constantly high level of humidity favours the formation of filter mould or biofilms. Instead of eliminating a hazard, others may therefore be created. For example, a decreasing flow rate, shorter filter lifetimes and mould on the filter. Because the filter is heated to over 100 °C regularly, the entry of moisture, fast fouling and filter mould are not a problem with the TAC V+. Since the humidity is fully discharged again in the course of the thermal regeneration cycle, not only drying the filter at regular intervals, but additionally regenerating it again via its self-cleaning function.

With this innovative procedure the filter resistance remains low and the clean air flow remains at a constantly high level for a considerably longer time. Consequently the lifetime is much longer than that of other filter systems without thermal regeneration and decontamination. This is also confirmed by current studies, providing the following summary that is based on the analysis of the TAC V+ and its H14 HEPA filter with self-cleaning function: “Therefore it is to be expected that this filter can have a lifetime of several years, depending on the load.”

Hard to believe, hardly to be heard

The TAC V+ is an an air cleaning revolution of the silent kind

Sound protection hood to ensure silent operation

The task of qualified high-performance air purifiers is to make the utilization of interior spaces possible again – and not to make it more difficult! Nevertheless, without large volumes of clean air, the risk of infection cannot be minimized!

When aerosols are separated or viruses are filtered out, high air change rates between 6 and 12 are required, and in the medical sector up to even 20 times. Without these large air circulation rates, spontaneously occurring aerosol clouds cannot be diluted and filtered out safely and quickly. Therefore, depending on the safety requirement, even in smaller rooms of 45 m² you already need amounts of clean air from 700 m³ to 1,500 m³, which requires a fan with a correspondingly high ventilation power. In addition to the required filter efficiency and long filter lifetimes, however, an acceptable noise level, in spite of the large air volumes, is desirable.

The TAC V+ is the first and so far the only room air purifier on the global market that has been explicitly designed for the filtration of virus-carrying aerosols in interior spaces! That’s why a long filter lifetime and low noise generation were two of the key priorities of the design. For noise-sensitive areas, the TAC V+ can be equipped with an optional sound protection hood, if required, reducing the subjectively perceived noise by almost 50 % yet again!

Virus protection on the spot

The TAC V+ is flexible, mobile and can be used everywhere at any time

Its unique design makes it possible to use the TAC V+ everywhere it is needed and without any installation effort. Flexible, mobile and with its modular design, exactly as many TAC V+ can be provided as required by the hygiene concept. Variably adapted to the staff density, security level, type of application and room size. With the optionally available hose adapter, the TAC V+ can also be connected to existing air distribution systems.

Recommended by scientists: Only sufficiently dimensioned air change rates ensure protection against a risk of infection

Where the effective treatment of the risk of infection by aerosol is concerned, high air change rates (exceeding a factor of 6) and large volumes of clean air are indispensable, despite promises to the contrary made by other providers who advertise single to threefold air change rates per hour as sufficient. To meet these requirements, the virus air cleaner not only has to be able to provide corresponding volumes of clean air, but it must also be flexibly placeable directly in potential hazard zones.


Well thought out to the detail, unparalleled in its entirety – the six benefits of the TAC V+ at a glance:

  1. Large clean air capacity: up to 1,600 m³/h virus-filtered clean air, a high pressure performance for optimum air circulation and high air circulation rates
  2. High-performance filtration: Fully encapsulated H14 lamellae high-temperature filter “made in Germany” with flow-adapted filter surface for virus-filtered room air
  3. Thermal filter decontamination: 100 °C for 100 % elimination of viruses, bacteria and other microorganisms, preventing the air cleaner from becoming a virus spreader itself!
  1. Thermal filter regeneration: 100 °C for 100 % evaporation of the aerosols; self-cleaning of the filter, low filter resistance, constantly high volume of clean air, extremely long lifetime, no filter mould
  2. Background noise: the most silent high-performance air purifier in relation to the air flow rate
  3. Application flexibility: suitable for mobile and stationary application, “Plug & Play” for the connection to existing air distribution systems, modularly expandable

The TAC V+ is the only air cleaner on the market with a scientifically proven virucidal effectiveness!

Recent studies have established that the high-frequency air cleaner TAC V+ effectively reduces the airborne infection risk

As the only mobile air cleaner worldwide, the TAC V+ was specially designed for the purpose of virus filtration and in this regard has been tested for its effectiveness by several scientific studies. A study conducted under the direction of Prof. Dr. Christian Kähler at the Institute for Fluid Mechanics and Aerodynamics of the University of the German Federal Armed Forces in Munich has confirmed that by means of the TAC V+ the virus load brought on by aerosols and therefore an airborne infection risk in interior spaces can be substantially reduced even with the windows closed and without a proper room ventilation system.

Studies prove: The TAC V+ can effectively reduce an indirect SARS-CoV-2 infection risk brought on by aerosols!

“The quantitative measurement results show that, with the TROTEC TAC V+ room air cleaner tested, due to the large volume flow and the filter combination of class F7 + H14, aerosol concentrations even in rooms with a surface of 80 m² can be reduced by half within 6 - 15 minutes, depending on the volume flow. In the case of rooms of 20 m² the concentrations are halved within 3 - 5 minutes, depending on the volume flow.

Therefore, room air cleaners of the TAC V+ type make it possible to easily maintain the aerosol concentration in small-sized to medium-sized rooms at a low level. … Air purification units of the TAC V+ type are therefore perfectly suited, for instance, to provide for a constantly low virus load in classrooms, shops, waiting or treatment rooms, without having to think about opening windows and affecting the well-being in the room. Furthermore, in contrast to free ventilation by means of windows they also ensure a true reduction of the virus load, something that free ventilation can often not guarantee.

In addition and compared to room ventilation systems working without or only with a small proportion of fresh air, they also offer the benefit of ensuring that the viruses are actually filtered out and that they are not spread within the building through other channels. … To prevent the room air cleaner from becoming a virus spreader, the H14 filter should be heated to approx. 100 °C every day for about 30 minutes, in order to destroy the viruses in the filter and prevent the formation of biofilms, bacteria and fungi without using harmful chemical additives or UV-C radiation.“

In an interview with the news magazine “Spiegel”, Prof. Dr. Kähler summarizes his research results on the TAC V+ as follows: »If you run this system continuously, no one will manage to generate an aerosol concentration of an infectious level in a room!«

The TAC V+ from Trotec is the only mobile air purification unit provided with a special H14 high-temperature lamellae particulate air filter with thermal filter decontamination, with which the H14 HEPA filter is treated thermally at regular intervals and is heated to over 100 °C, a procedure which practically destroys all viruses filtered out and which, by scientific expertise, is therefore defined as absolutely indispensable for effectively purifying the air from viruses! Only the combination of an effective F7-H14 filter system, a perfectly balanced air volume flow and the exclusive thermal filter decontamination technology provides for an effective protection against infections!


Optionally also available in further colours

In addition to the standard yellow paint, the TAC V+ is optionally painted in basalt gray, white or bronze and can also be ordered as a stainless steel version.

Optionally also available in further colours

Whether for sale or for rent: Trotec offers the right air cleaners

Whether you like to rent a high-frequency air cleaner on a short-term basis or whether you prefer buying it to benefit from a long-term use – at Trotec, devices and respective filters are always available from stock. Our expert consultants are also happy to advise you with regard to integrate your device into your AC system.

Purchasing a device: If you have any questions, please contact us via email: info@trotec.de or give us a call at +49 2452 962-400. Renting a device: Please contact our TKL hiring centre directly – by email: info@tkl-rent.net or under +49 2452 962-160.

Trotec solutions do not only allow you to generate clean and purified air, but also make the quality of the room air visible!

Triple indicator for healthy room air: Our BQ air quality measuring devices indicate all important values

Particle measuring device BQ30 for air quality monitoring

The Air quality monitor BQ30 should not be missing on any teacher's desk or in any open-plan office because this environmental monitoring station shows you the most important values for healthy room air at a glance: In addition to current CO2 values and the prevailing climate data, the pollution with particulate matter is also displayed in the particle sizes PM2.5 or PM10.

The CO2 load is an important indicator for required ventilation measures and the determined fine dust particle sizes also include pollen, a helpful feature to monitor the air quality for allergy sufferers!

Since critical aerosols which could be contaminated with viruses and remain suspended in the air for a long time also have particle sizes of 2.5, the BQ30 is the device to allow you to monitor the current aerosol load in the room. In addition, the device provides the function to configure individual limit values for all parameters, and if these are exceeded, the device automatically displays an alarm.

The Particle measuring device BQ20 rather is a mobile solution and can be recommended for e.g. caretaker work to be able to determine the aerosol load of the room air in different rooms.

Mobile particle measuring device BQ20

In addition to the two particle measuring instruments BQ20 and BQ30 you will find further professional particle counters such as the PC200 or the PC220 in the Trotec product range. Our particle counters cannot only be used for inspecting the air quality, but to test filter systems as well, for example.

Other application areas for virus filtration and air purification with high-frequency air cleaners from Trotec:

  • Germ-free room air in restaurants and canteens

    The shutdowns as a result of the corona crisis brought an existential threat to restaurant proprietors in particular. Reserves are exhausted, time is running, and with the regulations gradually being relaxed, the question remains on how to set up efficient hygiene concepts to protect personnel and guests. An important component for hygiene to prevent airborne infections is to keep the room air...

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  • Bacteria and virus-free room air in waiting rooms and medical practices

    The one who sees the doctor in times of a spreading influenza, of gastrointestinal infections or similar infectious diseases usually has to share the waiting room with sniffling, coughing or even febrile persons sitting next to him. Going to the dentist or the eye specialist also provides the same risk potential if e.g. a large part of the population is affected by an influenza epidemic. Not a...

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  • Bacteria and virus-free room air in daycare centres

    In kindergartens and similar childcare institutions of the childcare sector, infectious diseases are not uncommon. In addition to popular childhood illnesses such as mumps, measels, rubella, chickenpox, whooping cough and the fifth disease, diarrhoea and infections of the upper respiratory tract are also common. With the Coronavirus SARS CoV-2, another infectious disease entered our lives which is...

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  • Room air filtered from viruses in hotels and conference centres

    The hotel and restaurants sectors still are particularly hit very hard by the current Coronavirus impacts. Nearly all hotels had to be closed first, and will probably be suffering the longest time from the impacts after the pandemic. As long as the fear of an infection with the Coronavirus is higher than the usual convenience provided by the hotel sector, many guests will cancel or postpone any...

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  • Germ-free room air with H14 virus filtration in offices and public spaces

    Open-plan offices, museums, public institutions and buildings of public authorities share one common problem: In areas with high public traffic, there is always the risk of pathogenic particulate matter, allergens, spores, bacteria and viruses spreading through the room air. Whether to extend your ID card in the local citizen service, for the registration or de-registration of a vehicle in the...

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  • Virus-free room air in discos and clubs

    Clubs and discotheques are struggling with the consequences of the Corona crisis in many places. While restaurants and independent shops have reopened, the decision whether to open or not is still pending for clubs and discotheques – probably because they are often considered to be potential virus hotspots. This aspect in particular requires efficient hygiene concepts, allowing operators to ensure...

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  • Air cleaner with H14 virus filtration for gyms and therapy rooms

    Fitness studio operators, licenced physiotherapists and other physiotherapeutic workers are too familiar with the problem: Depending on season and temperature, there is stagnant air in the training or treatment room, even with the ventilation system activated. The breathing air is additionally polluted with suspended matter, e.g. dust particles, nitrogen oxides and formaldehyde, but also with...

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  • Virus-free room and breathing air in supermarkets, DIY stores and shops

    New infectious diseases such as influenza A/H5N1 (avian flu) or COVID-19 (coronavirus) spread all over the world in an irregular, yet continuous manner. The impacts on the diverse areas of daily life are rather drastic. Many salespersons who are not systemically relevant are forced to close their shops in times of highly infectious pandemics in order to prevent a newly-discovered virus from...

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  • Virus-free room air in logistics centres and production areas

    Current corona outbreaks in post and parcel distribution and processing centres offer an impressive demonstration of how fast and radical procedures in the production and logistics sector can be interrupted if only one infected person is present among the entire staff, and if no effective measures have been taken to prevent airborne infections within the working zones. An important component for...

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  • Virus-free room air in the meat industry

    Corona outbreaks in slaughterhouses and various meat-processing factories are a poignant reminder of how fast production procedures and whole companies can grind to a halt by infection chains if only one infected person is present among the entire staff, and if no effective measures have been taken to prevent airborne infections within the working zones. An important component for hygiene to...

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  • Dust-free construction sites thanks to air cleaners

    Construction sites are dusty places. Particularly when it comes to chiselling, grinding, cutting and milling operations or the removal of old plaster or tiles. For the most part, craftsmen cope with this by using breathing protections, and they have to accept a considerable cleaning effort. A more effective and healthy approach is the use of air cleaners, which extract the dust before it collects...

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  • Cleaning of ventilation and air conditioning systems

    Clean room air at the workplace and in public buildings is not only legally required, it also contributes significantly to daily well-being. Cleaning air conditioning systems regularly helps to ensure that the air remains pure. To filter out suspended particles as required, service companies will find the suitable air cleaner with a HEPA filter for your system.

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