Ventilation unit filter replacement intervals can vary a lot. In some homes, the filters turn dark within a few weeks. In others, they can almost be forgotten for close to a year. The difference usually comes down to outdoor air pollution, where the home is located, ventilation intensity, whether the unit is correctly sized, the filter class, installation direction and the quality of the filter itself.

As the heating season begins, make sure your ventilation unit (air handling unit) is working efficiently and delivering clean, fresh air throughout your home. Check the filters, airflow, heat exchanger, and condensate drain to prevent unpleasant odours and system faults. A well-maintained unit saves energy and ensures a healthy indoor climate all winter long.

Properly maintained filters are essential to ensure you always breathe clean air at home. Changing the filters isn’t difficult – you just need to follow a few simple steps.