ᐅ Which central ventilation system?

I have also read and heard quite a bit about Hoval. Two friends have installed one or are going to install one. For me, it will also come down to a Hoval, even though it will probably be more expensive.

xycrazy schrieb:
So we are also facing the decision about the ventilation system. For me, the topic is both simple and complex at the same time. It should be an easy choice, but then again, it’s not... because without moisture recovery, the air seems to get too dry, and with it you risk bringing more germs into the house – so what is better now?! I’m not going to invest 10,000€ so I have to put up a humidifier afterward or end up with a germ spreader... man, man, man... somehow, there’s rarely a good compromise in homebuilding. It’s similar with heating! It’s frustrating

Hi!

As we already mentioned here, you only have the problem of relatively low indoor humidity for just a few days a year. I personally find 30-33% still acceptable.

Please keep in mind when making your decision: The ventilation system replaces the air throughout the entire house approximately every 2 to 2.5 hours. The air is fresh, filtered (reducing pollen allergies!), the indoor climate is pleasant, and mold growth is prevented.
You can hardly achieve this very comfortable result with window ventilation, at least not without spending a lot of time and losing heating energy compared to a controlled ventilation system with heat recovery.

You won’t bring germs into the house with controlled ventilation, at least no more than if you ventilate through windows.

Whether or not to use a humidifier is up to each person. Of course, the device must be carefully maintained to prevent it from becoming a breeding ground for germs.
The alternative is to occasionally open a window or dry a few pieces of laundry indoors.

Best regards
Thorsten

I can only agree, except for

T21150 schrieb:

As we already mentioned here, you only have the problem with relatively low humidity on a few days of the year. I personally still find 30-33% acceptable.

For me, that would be too low; my mucous membranes apparently need a few percent more. It seems to vary a lot what people find comfortable.

I agree – this would also be insufficient for me, and in general it is too little for the building structure (although the currently this is only a short period).

Sebastian79 schrieb:
...and this is generally too low for the building structure

Do you possibly have a source for this? I am interested in the topic.
I was aware that too low humidity is not beneficial for health, but that it is also bad for the building structure?

Wood should not dry out, and you will also find an increased number of cracks in the plaster during prolonged dry periods.

That’s my current understanding...