Most of the time, we place great importance on the temperature of our interiors. And yet, we must not neglect their humidity level either. In general, indoor air should not be too dry or too humid.
With the onset of winter and lower temperatures, we naturally tend to turn on the heating. However, you should know that this lowers the humidity level . However, indoor air must still contain moisture to remain healthy. On the other hand, the humidity should be neither too low nor too high. In a practical guide, the Environment and Energy Management Agency (ADEME) is formal:a humidity level below 40% is synonymous with too dry air that can cause allergies. Humidity above 60% promotes the appearance of mold and bacteria may be harmful to health. In this guide, the ADEME therefore advises to acquire a hygrometer, because without this device, it is rather difficult to measure the hygrometry inside.
Forcing the heater a little too much often results in too dry air. In this case, the first action to take is to ventilate the accommodation, and this, at least a quarter of an hour a day. This allows the cold and humidity to enter. Then maintain an indoor temperature between 19 and 22°C achieves normal hygrometry. There is also the possibility of acquiring green plants. These will indeed generate natural humidity. The use of air humidifiers can also be very useful. Other simple gestures are also beneficial. This is particularly the case for regular dusting and vacuuming (then airing) or even avoiding smoking, lighting candles or diffusing room fragrances.
In the case of too much humidity, ventilating the accommodation is also the first thing to do. This will indeed allow to renew the air. The use of humidity absorbers also helps to restore an acceptable hygrometry. We should also mention the usefulness of installing VMC in the water rooms without forgetting to clean the air vents and check their tightness. As for Grandma's recipe, placing charcoal in a cardboard box can also act as a moisture absorber. Finally, it should be remembered that in general, an indoor air that is too dry is still preferable to air that is too humid.
