Hello everyone,
Next week we will start building our new KfW 70 house without a mechanical ventilation system. Why without? It’s better to leave that decision to us! A window manufacturer mentioned a window with a parallel ventilation position. At first, we were quite excited about it. But now we are wondering if this 6mm (0.24 inches) gap really makes a difference if the window is left like that all day—does it actually provide effective air exchange?
Perhaps someone already has experience with this.
Best regards
Next week we will start building our new KfW 70 house without a mechanical ventilation system. Why without? It’s better to leave that decision to us! A window manufacturer mentioned a window with a parallel ventilation position. At first, we were quite excited about it. But now we are wondering if this 6mm (0.24 inches) gap really makes a difference if the window is left like that all day—does it actually provide effective air exchange?
Perhaps someone already has experience with this.
Best regards
Our windows have this feature as well, but it didn’t incur any extra cost, so it didn’t matter.
I’m not a fan of it; I’m more concerned about wear and tear because the parallel tilt function isn’t rigid but rather “wobbles,” meaning the window is always moving.
It was promoted to us as a ventilation option even in bad weather.
I’m not a fan of it; I’m more concerned about wear and tear because the parallel tilt function isn’t rigid but rather “wobbles,” meaning the window is always moving.
It was promoted to us as a ventilation option even in bad weather.
nathi schrieb:
No, according to the promotional video, only the stale air goes out, but the heat stays inside.I haven’t watched the promotional video myself, but I did visit two to three independent—and some dependent—websites:
None of them address heat loss.
In short: they only compare it to a tilted window, highlighting the advantage that there is insurance coverage in case of a break-in (which is not provided for tilted windows on the ground floor).
If I conclude from this, the air exchange and heat loss can be equated with a tilted window—of course noting that the parallel ventilation takes longer.
You can also check this yourself, @Partyhupe.
Regards, Yvonne
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