Why original Filter?

Original replacement filters or cheaper counterfeit products?
Nowadays it is easy to purchase cheaper filters on the internet. These imitations might fit into your unit, but may otherwise have almost nothing in common with the original part. Often the end customer cannot see any difference in the product, only in the price. But the price is based on things which the cheap filter simply cannot provide.
So there are good reasons why you should buy original replacement filters:
  1. The filter used by the equipment manufacturer must be approved with regard to fire protection and hygiene. To receive accreditation, the filter must comply with the building material class B2 and pass a flammability test acc. DIN 4102-1. Furthermore, all substances and materials used in the filter (filter fleece, frames, sealants, adhesives) must be demonstrably free from substances hazardous to health.
  2. The filters in our equipment are designed for the relevant unit with respect to pressure loss (air volume). Here the filter area must be adapted to the material used. The correct pressure loss over the filter in both flow directions is important for the internal leakage of the unit (pressure differences in the unit) and the air volume ratio (balance between the supply air and extract air). The unit characteristics and the fan activation for air volume control have been determined in extensive laboratory tests and are the basis for catalogues, design tools and the software for controlling the units. Other filters with other properties change the behaviour and the air volumes of the unit definitively. Finding a counterfeit product with the same properties would be like winning the lottery.
  3. Due to differences in materials or a smaller filter surface, incorrect filters can lead to higher pressure losses. In addition to 2.), a higher pressure loss also means the unit will consume more electricity. This is because the effort needed for the fan to transport the air is increased.
  4. Equipment manufacturers must provide evidence and documentation for the filter classes. They are inspected by market surveillance authorities and must therefore also check their suppliers to ensure reliable and consistent quality.
  5. Fine filters must be sealed to the housing, so that no unfiltered air can flow past the filter. The higher the filter class, the better the seal needs to be. The original part has the appropriate seal for the unit!