Rotasystem Air Purifier

Mechanical or electrical filtration have been the basic technologies for cleaning room air up to now. However, each of these filter technologies has limitations. Either filtration efficiency or airflow will be significantly affected.
While conventional air purifiers only push polluted air through a fine filter, our air purifiers combine two filter technologies.
The result: very clean air in less time and with whisper-quiet operation and very low energy consumption.

Technology | Function

HEPASilent Concept

Step 1.
Prefiltration Ionization unit
Ionization is necessary to efficiently charge impurities. The electric charge causes the finest particles to adhere to the filters and fix them. Viruses and bacteria die.
The ionization unit is optimized to enable effective charging results at very low voltage levels.

Step 2.
Fine dust filter
The fine particle filter is a fiber filter with a higher filter class to stop particles (including ultra-fine sizes below 0.1 μm), allergens, mold spores, bacteria and viruses.

Step 3.
Activated carbon filter
Activated carbon is the last phase in the filter system. Activated carbon is integrated into the surface of the fine dust filter. The function of activated carbon is to stop gaseous compounds ("VOC" gases emitted by mold spores). In addition, ozone is bound and as such also reduces the total amount of ozone in the room.

Conventional HEPA filters:

Only mechanical filtering


Less pure air
A HEPA filter with a very high filter density will hold back particles, but this also means that less clean air will pass through the filter and there will be a large pressure loss.

Greater noise development
If enough air is to be forced through a tight HEPA filter, a higher fan speed is required, which results in higher noise generation.



Higher energy consumption
If the fan runs at a higher speed, more energy is also required.


Eliminates viruses and bacteria
Mechanical (HEPA) filtering alone filters viruses and bacteria - but since the germs are not killed, germs can grow inside the filter.


Eliminates particles as small as 0.3 microns
The HEPA filter filters particles up to a diameter of 0.3 micrometers such as dust, pollen and smoke.

The HEPASilent ™ technology:

Electrostatic & mechanical filtering


More pure air
By combining two filter technologies, the fan has to generate less power. The filters require less density, which reduces pressure loss and noise emissions.

Less noise
With a less dense filter material, the fan of the air purifier can be operated at a significantly lower speed, which means that there is much less noise and at the same time a particularly high air flow is generated.

Lower energy consumption
Operating at a lower fan speed consumes less energy. That's why all Blueair cleaners are ENERGY STAR certified and use less energy than a lightbulb at the lowest speed.
Kills viruses and bacteria
Viruses and bacteria are inactivated by the combination of electrical charge and a large amount of air.

Eliminates particles as small as 0.1 micrometers
The HEPASilent® technology filters particles up to a size of 0.1 micrometers, including viruses, bacteria and microplastics, and also removes larger particles such as dust, pollen, smoke and pet dander.