After a short delivery delay due to corona-related disruptions in international shipping, the almost 900 devices ordered have now arrived and are currently being set up by employees of LTEG GmbH from Rain am Lech in classrooms, specialist rooms and teachers’ rooms at a total of eleven school locations. Schools that already have mechanical ventilation systems are excluded.
The classrooms are each equipped with two to four air purifiers, depending on their size. This ensures that the entire room air in a classroom flows through the air purifier 5 to 6 times per hour in order to ensure maximum protection against infection.
“In addition to infection protection, which of course has the highest priority, it was important to us – in view of the considerable investment that the district is making here – to also take future aspects such as follow-up costs and sustainability into account,” explains District Administrator Dr. Klaus Metzger.
In contrast to many alternative technologies with HEPA and UV-C, where follow-up costs arise from replacement filters or lamps and high power consumption, the pre- and main filter units of the devices purchased by the district do not have to be costly changed and disposed of, but can – afterwards Reaching the capacity limit – cleaned and then reused without any loss of quality. “This not only saves the district a lot of money, but also protects our environment,” says Rainer Hurler, department head of municipal construction in the district. The district will also save on electricity bills. Since the energy consumption of the purchased plasma devices is significantly lower than that of devices with HEPA and UV-C technology, there are also lower follow-up costs here.
Another advantage of the purchased devices is the long-lasting high filter efficiency. In the case of many devices with HEPA filters, this decreases quickly and significantly over time. Last but not least, Stiftung Warentest also referred to this fact in January of this year. In the case of the air purifiers that were procured, the efficiency of the same test method hardly decreases measurably, which means that the protective effect in schools remains high.
For the district, however, a high-quality re-use concept for the air purifiers was also the focus of its procurement. In addition to being used in the event of any further influenza waves, the air purifiers can also “only” be used to improve the quality of the indoor air. Because the purchased devices also reliably filter fine dust, pollen, other allergens as well as formaldehyde and fungal spores from the ambient air. The mobile air purifiers will therefore continue to be used in schools long after the end of the current corona pandemic.