Fewer openable windows with controlled residential ventilation

I have a single fixed window (for security reasons). I wouldn't want it that way anymore, something that can be opened is easier to handle.

We also have a single fixed window. Never again

We have glazed quite a bit, mainly because of the size. But on the ground floor (EG) and not the upper floor (OG) because of cleaning. Escape routes are also convenient. We have venetian blinds everywhere, so cleaning the slats is less of an issue (and if at all, then on the ground floor). The additional costs between tilt and turn and tilt windows are marginal. You don’t save anything there.

A controlled residential ventilation system does not replace airing out,

I don't see it that way.

A controlled residential ventilation system does not replace airing, especially not during the first year after moving in. I would always design all windows to be openable.

You don’t need all windows for airing. We have three fixed glazing units: one in the gallery, two light bands in the kitchen and living room – both unnecessary for airing through and easy to clean from the outside. Therefore: where you need windows for airing -> do not use fixed glazing. Where you want to be able to open windows for cleaning -> do not use fixed glazing.

Otherwise, you can consider it. But the line of thought: I have a controlled residential ventilation system, I don’t need windows to open, that is simply wrong.

Even I, as an absolute advocate of controlled residential ventilation, would always plan for as many windows as possible. Windows and controlled residential ventilation do not have any particular connection for me at first.

But of course, under normal circumstances, controlled residential ventilation completely replaces window ventilation; otherwise, it would be quite useless. As long as you do not ventilate fully by shock ventilation more than 10 times a day, the exchanged air volume with controlled residential ventilation is also significantly higher than one could achieve manually -> better indoor air quality.

You could take the roller shutter slats out of the box from the top and clean them. Just as a tip.

Our boxes can be opened from the inside. And the plasterers have plastered the reveal very thickly. We already had to open one box and now have plaster flakes there... :-( And we would surely have them there as well.

There are aids with magnets where you can basically clean the roller shutters from the inside and outside at the same time

That sounds good. I'll look into it. Thanks.