HyTHERMO Technology

HyThermo vs. HEPA air filters

HEPA  filters can usually do what the manufacturers of these air purifiers claim. Many can trap 99.9% of such particles that are large enough. This size is around 5-10 µm (micrometers) or even finer.

HEPA  filters trap contaminants and hold them in the filter until the filter is removed, cleaned and / or safely disposed.

But if many of the finer particles are caught, they very quickly clog the HEPA  filter and soon require manual cleaning or replacement. If HEPA  filters are used, a larger surface area is required to capture and purify a desired amount of air. The result is a significantly higher energy consumption.

¹ the HEPA  filter-material will quickly becomes saturated when catching aerosols.

² to remove viruses as small as 0.1µm the filter requires a very large surface area that would become clogged ultra fast. It requires huge amount of energy to operate. Killer Ernst® with HyThermo® Filter-Technology is much more effective and can be build smaller in volume.

3 only removes particles, odors evaporate into the air as they are to small for the filter to capture

4 the smoke is producing VOC’s that HEPA  filters cannot catch

Filter degradation over time

If an effectiveness of 99.9% is stated for air filters with HEPA  filters, this may be correct for a newly installed filter, but it only applies to larger and medium-sized particles, usually not to the smallest particles, which also include the COVID-19 viruses with 0.1µm.

If HEPA  filters with ultra-small pores are used, the air flow rate is drastically reduced while filters quickly become clogged.

1 washing of pre-filters required on a weekly basis. HEPA  Filters depending on micron size capture ratings. Fine rating weekly/monthly, coarse rating monthly or at least by-annually. Of all air cleaning solutions does PECO filters have the worst consumer product reviews.

2 UV light air purifiers do have serviceable pre filters, UV-bulbs get contaminated, coated and lose their effectiveness over time, UV light needs cleaning processing monthly, they require a slow airstream with long contact time (1mtr/sec) energy consumption can be as high as 2.000-4.000 watts when air volume cleaned is compared against HyThermo®.

3 Killer Ernst Model S with HyThermo® starts within seconds purifying the air (Killer Ernst Model S 180m3/hr), catching and killing all sizes of contaminants in a single pass (10 to 0.001 micron in sizes). HyThermo® filter eliminates particles, not just catches them like PECO or HEPA . The re-circulation of cleaned air means that the HEPA  pre filter installed will last much longer.

UV-Light is not suitable in air purifiers

UV light is not effective immediately, it takes a long exposure to light to become effective. However, this is rarely the case with an air flow in air purifiers.

The air needs to be exposed to light for as long as possible, this is known as the DWELL time.

Light must be of sufficient intensity and require large amounts of energy (high wattage = high cost). In almost all cases, UV tubes are used because UV LEDs are still far too expensive and cannot generate the necessary power.

UV filters are mostly large systems, they react slowly and unreliably. Not much is achieved with one pass of air; a result can only be measured after many passes.

UV light is well suited for cleaning surfaces with a longer exposure time, but not for quickly cleaning air in the air purifier.

UV radiation can cause skin irritation and damage the eyes (The World Health Organization).

UV light does not kill the microorganisms, but can change “” strands “” that form the helical structure of DNA / RNA and thus inactivate them.

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