Choice and change of filter

Small particles from both indoor sources (e.g., candles and cooking) and from outdoor sources (construction dust, tire wear and soot particles) are inhaled and affect our health to a greater or lesser extent. Diseases associated with indoor air exposure due to particulate pollution include:

  • Asthma and allergies
  • Lung diseases
  • Cardiovascular diseases

The smaller the particles you are exposed to, the deeper they are absorbed into the body and the more damage they can cause.

It is therefore important to ensure both the right filter for the needs you have as a family, but also to ensure a clean filter in your ventilation unit.

Filter types

When you choose the type of filter for your system, the choice depends on whether there are special needs to be considered.

A standard filter (G4) is sufficient in most cases if there are no allergens among the residents of the home or if you do not live next to a heavily trafficked road.

If one or more of the residents have allergies, you can advantageously install a Pollen filter (ePM1 50-65% F7) all year round in the outdoor air intake. It filters out more particles than a regular filter.

The filter in the extraction air will still be a standard filter and you must therefore be aware that the two filters have different replacement intervals. The pollen filter usually does not need to be replaced as often as the standard filter, as the total filter area in a pollen filter is somewhat larger.

If you are in an area with a lot of traffic and smog from e.g., a highway or heavy industry, a healthy indoor climate can be ensured by using a filter in the class ePM1 80% - also called category F9.


Change of filter

It is important to change filters regularly to ensure the highest performance from your ventilation unit.

In addition to your unit notifying, when it is time to change the filter, damp on the inside of your windows is also an indicator that you should check your filter.

If you find that the unit makes more noise or vibrates more than usual, you should also look at your filter.

Five good tips for a good indoor climate

If you experience deteriorating air quality and indoor climate - and the filter in your ventilation unit is clean and ready for use - here are some things that you can do yourself.

  • Avoid using candles.
  • Clean often, so that you minimize dust in the home.
  • Electrical devices should be switched off, when not in use.
  • Minimize humidity in the home when you shower - close the door and open the window. The moisture is then vented out, away from the home.
  • Close the door to the kitchen when you are cooking and turn on the extractor hood.