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Old 20.09.2014, 13:03
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Mold/high humidity in Zurich apartments: is that a common problem?

Hi all,

I had mold problems in my previous apartment in Zurich. In my new apartment we had only small occurrences of mold that quickly went away, but still we have high humidity.

I got a humidity reader and it reads always around 70%. Now, the common advice is to open often the windows, and I do that but it doesn't seem like a solution: It goes maybe to 65% after an hour, only to go back to 70% soon. So I got a dehumidifier, but I am not sure how good of a solution it is. Even if I leave it running the whole day and puts the humidity down to almost 50, the next day is up again to the old levels, so it seems a bit like a waste of electricity.

The reason this is a problem is that I am having very often respiratory problems (bronquitis, asthma, allergies, sore throats etc) and I believe is related to it, or aggravated by it, as the humidity in the rooms should be ideally between 35% and 50% if you have this kind of problems.

Does anybody have similar issues?

Both apartments are pretty old, from the 60s or 70s, so we are seriously considering getting a new modern apartment, which I hope are better prepared to deal with it.

Do you think this is the right idea? Or I was just unlucky with these 2 apartments?
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Old 20.09.2014, 13:15
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Re: Mold/high humidity in Zurich apartments: is that a common problem?

My apartment is 60's or so,and definitely suffers form high humidity, the heat can be pretty nasty in Summer, and I have real trouble sleeping.

Have you tried a dehumidifier?

EDIT - Just saw that you have tried one (skimmed that part sorry), but of course it goes back up to normal levels the next day, that is self-explanatory. If it really bothers you, then moving would be your only option, and the new apartments are probably better int his respect.

Last edited by Chuff; 20.09.2014 at 13:34.
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Old 20.09.2014, 13:32
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Re: Mold/high humidity in Zurich apartments: is that a common problem?

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Have you tried a dehumidifier?
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So I got a dehumidifier, but I am not sure how good of a solution it is. Even if I leave it running the whole day and puts the humidity down to almost 50, the next day is up again to the old levels, so it seems a bit like a waste of electricity.
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Old 20.09.2014, 13:50
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Re: Mold/high humidity in Zurich apartments: is that a common problem?

It helps to keep the bathroom door closed during and after using the shower, and then open the window, or put the fan on.

Do you have a shower curtain? Hang it up and spread it out, so it dries quickly when doing the above extraction. It helps of
course if you all shower after each other, keeping the door shut as much as possible, then extracting the steam in one go.

Do you use a washing machine? that is also a big source of humidity.

Recommended action is to open the windows and doors every 4 hours, for 3 or 4 minutes, then close, to avoid wasting the heat.

When it is freezing outside the humidity will drop.
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Old 20.09.2014, 18:50
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Re: Mold/high humidity in Zurich apartments: is that a common problem?

Thanks Sbrinz... though we don't have a washing machine in the flat and we don't dry clothes there either, and our bathroom has a window instead of a fan and we leave it open all the time so I dont feel there is a lot of improvement there...
It's true that as soon as it starts to get cold outside and they put the heating, then the humidity levels go down to normal levels.

I guess what I should do to check if other flats have the same levels is to bring the humidity reader with me
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Old 20.09.2014, 19:09
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Re: Mold/high humidity in Zurich apartments: is that a common problem?

Apartment mood is dangerous, contact the mietverband or what it's called for legal assistance
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