ᐅ Ventilation in summer without a mechanical ventilation system can be challenging
Created on: 12 Jun 2020 21:05
T
TheKMKM
Hello,
I have done quite a bit of research but still don’t feel any wiser on this topic.
Many sources suggest ventilating early in the morning or late in the evening during summer because it is usually cooler outside than inside at those times. However, these sources often also mention that the outdoor humidity should ideally be lower.
But when I check the data, humidity is usually quite high in the early morning or evening during summer, or am I mistaken? So when exactly should I ventilate on hot summer days? Not ventilating at all doesn’t help either if the indoor humidity becomes too high (around 65 percent in the basement, for example).
Can someone explain this to me or give me some advice?
I would appreciate it.
I have done quite a bit of research but still don’t feel any wiser on this topic.
Many sources suggest ventilating early in the morning or late in the evening during summer because it is usually cooler outside than inside at those times. However, these sources often also mention that the outdoor humidity should ideally be lower.
But when I check the data, humidity is usually quite high in the early morning or evening during summer, or am I mistaken? So when exactly should I ventilate on hot summer days? Not ventilating at all doesn’t help either if the indoor humidity becomes too high (around 65 percent in the basement, for example).
Can someone explain this to me or give me some advice?
I would appreciate it.
seat88 schrieb:
During the day, keep the windows closed. Still, ventilate in the early morning and evening—14°C (57°F) and 80 percent humidity outside is actually drier than 22°C (72°F) with 58 percent inside. Ventilating will make your indoor air drier, even if that’s hard to believe.... The problem right now is that it stays around 18°C (64°F) outside even at night for at least a week. Then that calculation doesn’t quite work because the temperature difference is too small. Still ventilate? According to the app, no. I don’t know how quickly it becomes critical, but not ventilating for a whole week isn’t ideal either.
KingJulien14 Jun 2020 10:57TheKMKM schrieb:
I don’t know how quickly it becomes critical, but not ventilating for a week is silly.Seriously? You want to avoid ventilating for a whole week just because an app tells you to?
Just leave the numbers aside and ventilate using common sense.
Or do you think the other 80 million people in Germany have some secret method for ventilating?
How have you been ventilating so far?
Besides, it’s not only about humidity; the CO2 also needs to be removed.
KingJulien14 Jun 2020 11:01PS: Just buy a dehumidifier, then you can ventilate with a clear conscience even in summer.
KingJulien14 Jun 2020 11:15Do you now have a finished basement?
I would actually ventilate a utility basement very sparingly in summer, possibly adding dehumidification.
And regarding the house: In summer, the indoor air is simply more humid, and without air conditioning, there’s not much you can do about it.
I would actually ventilate a utility basement very sparingly in summer, possibly adding dehumidification.
And regarding the house: In summer, the indoor air is simply more humid, and without air conditioning, there’s not much you can do about it.
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