AHU maintenance
Did you know that an incorrectly installed filter can cut your heat recovery unit’s lifespan in half? Learn which mistakes to avoid and how to replace your filters correctly at home.
Autumn is the perfect time to check your indoor air quality. HVAC installers share expert tips on choosing the right filters for your MVHR system. Learn when to use G4, M5 or F7 filters, when activated carbon filters are worth it, and how proper maintenance helps your unit last longer.
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.
Manufacturers recommend changing them every 6 months under normal conditions, or every 4 months in polluted areas. Learn the key signs that your filter is clogged and how to choose the right replacement interval.
September is a transitional month when sharp temperature and humidity fluctuations create additional challenges for your ventilation system. During the day the air is still warm, while at night it becomes much cooler. Improperly adjusted ventilation can lead to discomfort, condensation, or even mold risk.
Most people replace filters only when they become visibly dirty. However, even a filter that looks “still usable” may already fail to clean the air properly. Sometimes people try shaking, vacuuming, or blowing through the filter – but that only helps for a short while. Why is that, and what is the real difference between old and new filters?
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.
Regular filter replacement is essential to maintain the efficiency of your MVHR (Mechanical Ventilation with Heat Recovery) unit, reduce energy consumption, and extend the life of your ventilation system. While changing filters is a simple task, manufacturers often provide only basic instructions, leading to common mistakes.
An M5 filter helps protect your ventilation system—especially the heat exchanger—from clogging, while also filtering out PM10 particles common in many European cities. Positioned between G4 and F7 filters, the M5 offers more effective filtration than G4 with lower energy use and a longer lifespan than F7.