Main Features / USP

  • Extremely quiet and draught-free operation (43 db(A))
  • Fast and effective removal of airborne pollutants such as viruses, bacteria and pollen
  • HEPA filter in the separation class according to EN1822-1 H14 (filters at least 99.995 % of the pollutant particles in the range 0.1 μm - 0.3 μm)
    • H13: >99.95% means < 5 Particles of 10.000 penetrate the filter
    • H14: >99.995% means < 5 Particles of 100.000 penetrate the filter
  • Compact and modular Design
  • Multi-stage operation enables individual adaptation to the ambient situation

Technical Data SilentCare

  • High efficiency with low power consumption
  • Compact design with castors for mobile use
  • Low pressure drop and quiet operation (43 db(A) with optimum air circulation)
  • 360 degree air circulation and cleaning
  • Suitable for rooms up to approx. 45 m² (max. 70m² booster) with 5-fold exchange
  • Volume flow rate of 600 m³/h (max. 900 m³/h Boost)
  • Filter element service life: 24 months at 8 hours operation per day (in office environment)
  • Power consumption at operating volume flow 600 m³/h = 45 Watt
  • Dimensions: height approx. 1100mm, Ø 500mm, approx. 35 kg


Clean air on everyone's lips

Clean air free of viruses, bacteria and other pollutants is a major factor in promoting our health. Particularly in rooms with a high frequency of people, the number of airborne pollutants increases rapidly, thus greatly increasing the risk of infection with pathogens.

As the supply of fresh air in rooms often cannot be guaranteed to the optimum extent, SilentCare is the perfect solution. It filters the ambient air regularly and, above all, very quietly. The noise level of SilentCare is well below the average noise level of an office of approx. 50-60 db(A) and guarantees trouble-free working.

Special protection - filter medium with separation class H 14

The three-layer filter medium, certified according to the European standard EN 1822, ensures efficient filtration of almost all aerosols found in the ambient air of closed rooms.

Thus pollutants can be reduced to a minimum.

The filtering micro glass fibre layer is embedded between two polyester fleeces.

This prevents contact with the filter layer.

How do the aerosols get into the air?

By coughing

In a single cough, a person is able to expel up to 3,000 droplets containing up to 200 million virus particles and move at a speed of up to 80.5 km/h.

If you cough while wearing a mask that blocks the passage of virus particles by 99%, 2 million virus particles will still enter the room.

Through sneezing

Sneezing can expel 40,000 droplets into the air (many of which are too small to be seen by the human eye). All these particles remain in the air until they either sink to the ground or are inhaled by other people.

Even larger particles that sink quickly can be released back into the air by movement in the room. Opening a door, for example, changes the airflow in the room and disturbs the particles that have settled on different

Virus contamination of an environment

A person infected with a virus is effectively a continuous virus generator

Contamination in a non-contaminated environment will increase with logarithmic growth as particles from the atmosphere settle

Air changes (external or internal) speed up the removal of particles and reduce the plateau on which the generation rate and the removal rate balance each other out.

Conclusion: Air exchange significantly reduces the viral load in a room, either by opening windows or by air conditioning, and is the key to reducing the risk of exposure

Test with fog machine


Does the room air filter replace ventilation?

No, the fresh air supply is not affected by the room air filter. Therefore, we still recommend to ventilate rooms regularly!

Can the mouth and nose protector be replaced by a room air filter?

No, because a room air filter can reduce the indirect viral load (through aerosols) in a room by approx. 90% (superspreader), but cannot exclude the direct viral load (droplets and direct contact) through face-to-face contact, it is still recommended to wear a mouth and nose protector!

Is there scientific evidence for the effectiveness of indoor air filters?

There are various studies that confirm the effectiveness of H14 filtration. The advantage is that 99.995% of viruses are separated (with a class H14 filter) during a single pass through the unit and the unit is quiet, so that it can be operated.

Why use H14 is not enough H13 or similar?

The H14 filter according to EN 1822-1 has a 10-fold higher filter performance than H13-HEPA filters with 99.95% and even a 1000-fold higher filter performance than E11-EPA standard air filters with only 95%, as used in most air purifiers!

H13: >99.95% means < 5 Particles of 10.000 penetrate the filter

H14: >99.995% means < 5 Particles of 100.000 penetrate the filter

Why does this device not have the possibility of UV treatment, ozone or similar?

Treatment of air pollutants with ozone or UV light is rejected by the IDE for health and safety reasons. Ozonation and UV-induced reactions of organic substances can release unpredictable secondary compounds into the ambient air. With UVC, safety aspects are also the main reason why it should not be used in the non-commercial sector.

Why does FG not use CO2 sensors or other sensor technology?

The aerogenic viral load cannot be determined by such sensors. This would require an input measurement of aerosol particles, as these can be contaminated with viruses. However, suitable measuring sensors are not available for capacitive measurement of the aerosol load.

What other advantage does such a room air filter offer?

A professional FG Room Air Filter with effective HEPA H14 filter technology is not only able to effectively filter out viral aerosol particles and bacteria from the room air, but is just as reliably able to filter out harmful fine dust particles or spores.

What are the running costs of SilentCare?

In normal operation we have a power consumption of 40 watts, so we achieve a power consumption similar to a light bulb. There are no further operating costs to be expected. In addition, every two years we have to pay € 375 for a replacement element.

Can the filter be touched during or after operation without hesitation, or is it necessary to be concerned that the housing is contaminated with viruses?

The aerosols contaminated with viruses, bacteria, etc. are deposited in the glass fibre layer of the material. This glass fibre layer is embedded in two polyester layers. In addition, we have an expanded metal on the inside and a poly net on the outside directly on the element. The expanded metal cover is then placed over the element. So even if you touch the housing or even the element directly, you have no direct access to the glass fibre material on which the separated pollutants are suspended. Normally these do not detach from this layer but die off over time.

Can SilentCare be compared with standard appliances from electrical retailers?

These units have comparatively small filter elements so that an H14 efficiency cannot be achieved at a similar volume flow and 5-fold air exchange rate. Also the efficiency does not seem to be really sufficient for such an air exchange. Therefore these units cannot be compared with our room air filter. These are units for domestic use!

How is the device connected?

An IEC plug is fitted to the room air filter. We supply a cable with a German standard plug for this purpose.

Can people be hit by the viruses when standing in the air stream?

With regard to the air flow, the bottom of our unit is sucked in and the top of the element is blown out homogeneously and without draught. Here we have air speeds of less than 1 m/min. Of course, we have a constant air movement and thus also a movement of the aerosols, but I have this condition also without room air filters. The room air filter reduces the indirect risk of infection in a room by about 90 %. This means that people are not permanently exposed to a polluted air stream, as we enable a 5-fold air exchange with our device.

Element change

After 24 months of operation 8 h per day and 5 days per week in an office environment! Increasing the operating time or changing the application area to a "dirtier" environment will shorten the service life of the element!