ᐅ Energy Saving Regulation: Summer Thermal Comfort

niri09 schrieb:

Just like the Energy Saving Ordinance requires having solar collectors along with the gas heating system, the exact number is also determined by the Energy Saving Ordinance calculation.

But the Energy Saving Ordinance does not actually require that. You can certainly build in compliance with the Energy Saving Ordinance using a gas heating system WITHOUT solar thermal collectors. You just need to include a renewable energy share (for example, a controlled residential ventilation system with heat recovery is sufficient) and may need to implement compensatory measures, such as better insulation or windows/doors with lower U-values. Several people in this forum have already done this. Whether this makes sense in each individual case must be decided individually. It is possible.

To the original poster:
As far as I know, the Energy Saving Ordinance does not require you to install roller shutters on the ground floor. However, I could be mistaken here. The Energy Saving Ordinance, as @niri09 already mentioned, is more about meeting certain requirements rather than specific measures. It mainly concerns the assessment of building systems (energy generation, primary energy demand, requirement for renewable share, etc.) and the building envelope (insulation, transmission heat losses, U-values, etc.). Specific measures, like your roller shutters, are usually means to achieve these requirements. There may also be alternative measures to reach this goal. An energy consultant and/or architect should be knowledgeable and creative here. It is also possible that no alternative exists and therefore roller shutters are necessary. I just wanted to clarify that the Energy Saving Ordinance almost certainly (subject to correction) does NOT explicitly state that you must install roller shutters on the ground floor (or elsewhere) – for example, we do not have any roller shutters at all. Your question seemed to imply this, so here is a note to clarify.

We do not have shutters anywhere and have a floor-to-ceiling window element with a door facing southwest. In addition, we have several standard south-facing windows. No one requires this. It is completely unnecessary. We have a solid masonry house, built stone by stone; it is not warm or stuffy inside, but very comfortable. Karsten

Nordlys schrieb:
We don't have any roller shutters anywhere and one floor-to-ceiling window unit with a door facing southwest. In addition, several regular south-facing windows. No one requires that. And it is completely unnecessary. We have a solid masonry house, stone on stone, it is neither warm nor stuffy inside. Rather very comfortable. Karsten

That is the small but important difference, Karsten: Your windows, none of which are floor-to-ceiling, are properly distributed across different rooms.

And there was a new standard in 2016.

@ruppsn: yes, that’s clear, but those are additional points related to the gas heating system. There are almost always ways to comply with the energy saving regulations.
Our structural engineer carried out the energy saving regulation calculation, but architects do it as well.

I would clarify with them what can be done.

There are, of course, roller shutters available for corner windows as well. I often see them used in new housing developments.

Or as already mentioned, Venetian blinds.