Air filters

• Why is it necessary to change the air filters, and how often should this be done?

  Bacteria and mould gradually build up in the filters. This causes a deterioration in the air exchange capacity. In addition, the ventilation system becomes noisier if the filters are not changed regularly.

  On average, it is recommended to change the air filters at least twice a year. If your region or neighbourhood has poor air quality, you may want to change the filters more frequently, for example if you live in an urban area with a lot of traffic. If you suffer from allergies or asthma, you may need to change the filters after only 2 months.

• Can I vacuum or wash out the filters of my MVHR system myself?

  This is not recommended. The fibres may be damaged or lost, reducing the performance of the MVHR system. However, it may be a temporary solution for dirty filters. If you wish to wash air filters, do not use detergents! Our advice is and remains to replace the filters when they are dirty. This will keep the MVHR system working optimally.

• What type of MVHR filter is best for my household?

  The most common filters are G3 and G4. These so-called pre-filters protect the system from dust, sand and other coarse contaminants in the air. G3 filters have a filtration capacity of 85% and G4 filters have a filtration capacity of 92%.

  Does anyone in the house suffer from allergies? If so, we recommend F7 or F8 filters. These also filter pollen, making them ideal for allergy sufferers.