HEPA is an abbreviation for high-efficiency particulate air and stands for air filters that block at least 85% of all dust particles of 0.3 micrometers (µm). Incidentally, particles smaller than 0.3 µm are also captured better than the indicated percentage, but that is a very technical story. It is important to know that there are different classes of HEPA filters.
The HEPA filter classes are specified in European Standard 1822: 2009 of the European Union.
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The air in an office or classroom can easily contain five times as many harmful substances as the outside air. Sufficient ventilation is therefore important. But when it is cold outside, the windows often remain closed. In addition, the outside air dilutes the amount of harmful and unwanted substances in the indoor air, but does not remove them.
With the increased attention to pollen allergy, the harmful effects of particulate matter and the spread of germs such as the coronavirus via aerosols, there is a lot of interest in air purifying in commercial buildings, offices, catering establishments, treatment centers and in schools. People often dread the high costs of a central air treatment system. However, there is a much simpler, cheaper and more effective solution in the form of mobile air purifiers.
The modern air purifiers remove more than 99.9 percent of the polluting and pathogenic particles from the indoor air and render them harmless. Technological developments have resulted in equipment that requires a limited investment, requires little maintenance and can be used directly plug & play for optimal air purification.
Are you considering purchasing a large number of devices, but the investment amount is holding you back? We offer you an interest-free lease option!
We can also take care of maintenance for you. This in itself is a simple operation with our complete filter packages, but we can also come by to do it for you and check the air purifiers again.
For more information, please contact our advisors.
In addition to the volume of the room, Air Changes per Hour (ACH) is also important to determine what capacity air purifier (s) you need. The number of times per hour that the air in the room must be filtered and disinfected depends on the average number of people present in the room and any circumstances in which there is extra pollution. Consider, for example, dental practices where an above-average amount of aerosols (very small water droplets) float around. More exceptions can be found in the left column.
In most cases you can work with an ACH of 4, as advised by Harvard Healthy Buildings (authority in the US) and the world health organization WHO. The capacity calculated with this is usually above the Building Decree 2012 standard and the ARBO standard, because these allow the occupancy rate in a space to be determined. However, this has the risk that for relatively few people in a room, not all the air is attracted to the air purifier due to blind spots where the air circulates insufficiently.
You multiply the ACH of 4 by the volume of the room in cubic meters and that gives you the required air cleaning capacity.
For our models this means the following:
26oi NANO - capacity = 260 m3 / hour - divided by 4, this means suitable for a room up to 65 m3. With a standard ceiling height of 2.5 meters, this means a floor area of 26 m2 (for example 4 x 6.5 meters).
280 NANO - capacity = 280 m3 / hour - divided by 4 this means suitable for a room up to 70 m3. With a standard ceiling height of 2.5 meters, this means a floor area of 28 m2 (for example 4 x 7 or 5 x 5.5 meters).
720i EDGE - capacity = 720 m3 / hour - divided by 4 means suitable for a room up to 180 m3. With a standard ceiling height of 2.5 meters, this means a floor area of 72 m2 (for example 8 x 9 meters).
1200i PRO - capacity = 1200 m3 / hour - divided by 4 this means suitable for a room up to 300 m3. With a standard ceiling height of 2.5 meters, this means a floor area of 120 m2 (for example 10 x 12 or 6 x 20 meters).