Since 1980, new-build houses have mostly been delivered with balanced ventilation. This type of ventilation ensures that outdoor air enters the home and discharges the same amount of indoor air outside. This is convenient, as it means residents no longer have to worry about ventilating their home. For optimal system operation, it is necessary to change the filters once or twice a year. To prevent the heat exchanger from slowly clogging up, the system includes standard G3 filters to protect the heat exchanger. However, these filters completely or nearly completely fail to block particulate matter, so that it keeps swirling around inside the home. With a special F7 particulate matter filter, it’s possible to filter out up to 85% of *PM2.5 particulate matter, provided that the balanced ventilation unit is suitable for F7 filters when the house is delivered. A small adjustment makes a big difference!
Particulate matter is an umbrella term for all the tiny dust particles floating in the air, both outdoors and indoors. Contrary to popular belief, particulate matter is also released by burning candles, using the fireplace, and frying food.
*particulate matter refers to dust particles up to 10 micrometres, or PM10 (particulate matter). PM2.5 denotes even smaller particulate matter, a fraction of PM10.