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Measuring and Reducing CO2 Levels:
In public spaces, air is often refreshed with mechanical ventilation systems, which help keep CO2 levels in check. New homes are also often equipped with mechanical ventilation. However, residents sometimes turn off these systems due to the noise, says Rob van Strien from the GGD Amsterdam. To lower CO2 levels, it’s important to leave the exhaust on or use any available vents.
For those who want to check the CO2 levels in their home, it can be done with a meter. While cheaper meters may be of questionable quality, meters around 70 euros offer better accuracy. But you don’t necessarily have to spend money to check if your home is properly ventilated. You can often borrow a meter, or simply hold your hand against the vents to feel if air is flowing.
Humidity and Mold Formation:
Drying clothes, cooking, showering, or having many plants indoors can significantly raise the humidity levels in your home, leading to more dust mites and mold. The bathroom is often the most humid area in the house and a prime spot for mold. Mold can irritate the airways. Mold growth in the bathroom and other damp areas can be prevented by ventilating. If you don’t have an internal ventilation system, leave the bathroom door open after showering to allow the moist air to escape. Make sure to open a window in a room nearby, otherwise, the moist air will stay inside. If you have a damp basement, ventilation is equally important. Open the door to the basement regularly and check for moisture spots or mold.
Ventilating Against Aerosols:
In small, poorly ventilated rooms, aerosols—tiny droplets with viruses—can remain in the air for longer periods, as research shows. Ventilating helps dilute the air and remove pollutants more easily, reducing the concentration of aerosols and lowering the risk of contamination.
Tips for Ventilating with Minimal Heat Loss:
Even in old homes with gaps and cracks, natural ventilation isn’t always enough. In modern, well-insulated homes, ventilation is a key concern. Here are some tips for maintaining healthy air with minimal heat loss:
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