Indoor air quality
Cold and flu season often starts indoors — not outside. While filters in your ventilation unit can’t trap viruses themselves, proper air exchange, high-efficiency filters and balanced humidity greatly reduce the risk of infection and keep your home air cleaner and healthier.
Foggy windows, high humidity or mold in homes with an AHU or MVHR system? Learn why this happens and how to fix it – from airflow adjustments to filter checks.
During the heating season, outdoor air quality across Europe often deteriorates due to increased combustion and vehicle emissions. CleanFilter introduces new activated carbon filters designed for heat recovery units – an effective way to remove odors, smog, and harmful gases from the air supplied to your 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.
Activated carbon filters for MVHR systems help remove odours, smoke and harmful volatile organic compounds (VOCs) that standard dust filters cannot capture. They work through adsorption – gas molecules stick to the huge surface area of the carbon. These filters are especially useful if you live near busy roads, in areas with smog, or next to neighbours burning solid fuel.
Poor air quality has a direct impact on health – from coughing to serious heart conditions. The greatest risks come from fine particles, gases, and volatile compounds that penetrate deep into the lungs and even the bloodstream.
Protection is simple: use F7 class filters, replace them regularly, and ventilate your home properly. This way, the air indoors will stay cleaner than outside.
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.
Do you remember that feeling in the classroom when there was no ventilation – the air became heavy and stuffy, and you’d end up with a headache after lessons? The same thing happens at home if not enough fresh air gets in.
Summer can bring higher air pollution than other seasons due to traffic, wildfires, pollen, heat smog, and dust. The right ventilation filters — such as G4 for dust, M5 or F7 for allergens and smog, and activated carbon for odors — can protect indoor air quality. Filters should be checked every 3–4 months in summer to ensure optimal performance.
Many wonder if turning off their heat recovery ventilator (HRV) during summer saves energy. While it might seem logical since heating isn’t needed, modern HRV systems with summer modes use minimal electricity and provide significant benefits. Keeping your HRV running ensures cleaner, healthier air by filtering out dust, pollen, and bugs, reduces noise compared to open windows, improves ventilation in windowless rooms, enhances security, and even offers night cooling. Overall, running your HRV year-round is a smart choice for comfort, air quality, and safety.