KW40 house: Manufacturer refuses steam extractor

So about 1.4 * 1.4 cm²? :D

No, sorry, 200mm diameter!

The repayment grant is granted at the beginning of the ten years (as soon as the notification has been made). Then you would just have to wait a few more weeks after completion.

The money can be reclaimed for 10 years. In addition, this could be the criminal offense of subsidy fraud.

No, sorry, 200mm diameter!

But then that's not 200 mm². ;)

The money can be reclaimed for up to 10 years. In addition, it may be a case of subsidy fraud.

That would only apply if the required value is not achieved. You might then have to have a new certificate issued.

I thought in the KW40 I was to create I could install whatever I wanted as long as the energy requirements were met. But apparently I am mistaken.

Yes, you are mistaken. There are also technical limitations. No arguments help there. We waived KfW funding and largely did what we wanted and demonstrated a legal standard.

Our house builder would have accepted the exhaust air, the kitchen studio had advised against it. It was specially designed for low-energy houses. We don’t remember why anymore. We are more than satisfied with the recirculated air. No musty smell in the place.

The point is that here a house manufacturer is playing the nanny. If the customer wants exhaust air, he wants exhaust air. It's as simple as that. If after consultation he still wants it, then it just goes in. Bam.

Nope, if the provider says no, you're on your own. You didn't have to choose this provider. (We don't need to discuss that this is at least unfriendly to customers, but this time the home builder holds the stronger position.)