Currently messing around with Sweet Home 3D, but it's not that great. Especially when it comes to sloping roofs.
The slopes are crucial in the attic. Here, the tangent in the triangle helps especially to keep track of the heights, less so a program. You should especially pay attention to the head clearance at the stairs. I specifically drew in the 2m line. But that's what the architect is for later on.
For initial sketches, paper and pencil are enough.
Yes, that was once a plan (I know, it is still changing very often), but we don't need that much storage space, so we thought about adding two fully functional rooms above the utility room.
I think I'll put the whole thing up for discussion here in the next few days with all our desired conditions, room sizes, etc.
Are the noises of a controlled residential ventilation system (Zehnder Q350 planned) and a heat pump comparable? We would have a similar situation but only with a controlled residential ventilation system (and district heating). Personally, I had noted to provide a limestone wall or something similar here.
No, they are not comparable. A controlled residential ventilation system sounds like airflow, draft, rather high-frequency whistling. The compressor of the heat pump sounds like a loud refrigerator, i.e., low-frequency, pulsating, rattling. In addition, there are circulation pumps, which are more similar to a controlled residential ventilation system.
What do you think? How loud is the noise level? Can it be insulated well enough to sleep comfortably?
I find most technical rooms to be loud and hear the heat pumps and ventilation systems in the usual model homes in almost every room. Even if you can sleep through it, you are exposed to noise pollution, which has been proven to be unhealthy. In my view, a house with a technical room next to the sleeping area is a design flaw—unless the insulation against noise and vibration is addressed—which unfortunately is quite expensive.