Is a ventilation system cost-effective? Does it save money?

They are allowed again and in the editor.

You are not discussing anything, but you could at least explain why they were gone in the first place :-)

:D:D:D Hooray. That way you can add an appropriate signature scent to some ironic but kindly meant sentences again.

Actually exactly for that reason

You don’t really discuss, but you could at least explain why they were gone in the first place :-)

:D:D:D Hooray. That way you can add an appropriate signature scent to some ironic but kindly meant sentences again.

Actually exactly for that reason

You don’t discuss anything, but you could at least explain why they were even gone :-)

:D:D:D Hooray. With that, one can add a corresponding signature to some ironic but kindly meant sentences again.

Actually, that was introduced just because of this

Thank you all for the many answers. I already thought that the payback period of 10 years was quite a high estimate. But if the craftsman means the cleanliness and dust deposits in my lungs, he is probably right. So it looks like the investment somehow financially pays off over time and also has positive side effects that cannot yet be quantified. So why doesn’t everyone do it? Sounds like a great investment...

I would also like to point out that the topic of funding has not been properly taken into account yet. If you receive 10-20% of the acquisition costs funded by the BAFA, the calculation becomes significantly more positive...

[LQUOTE="nordanney, post: 689309, member: 14669"]
Living in the countryside, I can confirm it. Much less dust in the house – you do notice, however, when the tractors are in the fields and/or straw and hay are being made.
[/LQUOTE]
That means, though, that you have to keep all windows and doors closed all summer. That would be unimaginable for us.

[LQUOTE="LarsBr80, post: 689362, member: 73291"]
Thanks for all the answers. I already suspected that the payback period of 10 years is quite overestimated. But if the craftsman means cleanliness and dust deposits in my lungs, then he is probably right. So it looks like the investment does somehow financially pay off over time and has positive side effects that cannot yet be quantified. So why doesn't everyone do it? Sounds like a great investment...
[/LQUOTE]
Because there are people (like us) who love to keep windows and doors open as soon as the weather permits. Because it enlarges the living space, provides freedom and openness. Those who love to sleep with the window open. Not just because of the fresh air, but also because of the birds and other sounds of nature, e.g. the croaking of frogs in our pond. Because it costs money upfront (which has to be available or financed) and space. Because it probably would never pay off for people like us. Because it sometimes causes air that is too dry.