Heating costs for the new building with many windows

- Restrictions in the furniture arrangement.
- If you can look outside, people can also look inside from outside...
- Does not protect very well against noise (or special soundproof glazing is needed, which in turn protects worse against heat loss or, if both should be good, is very expensive)
- Does not protect very well against burglars
- Does not protect very well against things flying around in a storm
- Usually looks only half as good as you imagined during planning.

Good points, yes thank you.
I would also be interested in the last point. What exactly do you mean?

Whether the heating costs increase by 25€ per month now is negligible.
That’s the scale we are talking about.

Thanks - that would actually be negligible.

. For such a special house with a lot of glass, an external professional heating plan is the be-all and end-all. Then you have a well-functioning house in winter.

Yes, we will consult that. Nevertheless, I trust the experience of independent people (here) more than someone who wants to sell me something.

Beautiful things are not always sensible or come with consequences you should know/consider.
This time I was also a bit uncertain because of heating up and because I don’t like overheated rooms, which is why we installed an air conditioner to not be at the mercy of this problem. In retrospect, it wouldn’t have been necessary for our build but it was still a great decision for us, also because thanks to photovoltaics there are practically no operating costs and we occasionally use it for targeted heating.
Shading is very important, we have blinds (raffstores) on the south/west side and I would strongly advise you to do the same; we have no roof overhang.
I would also recommend generally insulating the house top-notch, i.e. roof, wall/facade; the energy consultant will also tell you where to do a bit more and where less; I would insulate to the maximum, e.g. also with external roof insulation.

Thanks. Yes, we have shading by raffstores and roof overhang. Insulation is still to come.

Yes. In a well-insulated house, it is difficult to get the heat out again – many forget that.
In addition to raffstores, there is the possibility of coatings, roof overhangs, terrace sails, and awnings...
The only non-solution would be foolishness.

Yes, as I said, shading by raffstores and roof overhang is in place.

Protection against burglars and storms – here glass naturally has fundamental but manageable disadvantages

May I ask how? I mean, how can that be managed? Alarm system in case of burglars?

Are your acquaintances advising in the sense of "giving advice" or are they advising in the sense of "actually I have no clue, my half-knowledge tells me that..."

Unfortunately, I don’t know. I was advised about the U-values and told that a wall insulates 10 times better than a window.

A suitable roof overhang that keeps some sun out in midsummer and makes living in the house quite good.

May I ask how big it is (width)?

However, it is my personal opinion that a wall panel can positively support a large window area.

What exactly is a wall panel that supports a large window area?

Hello @SuoTam99,
You already have a parallel thread running about the balcony. Wouldn’t you like to respond there to the contributions of the people? Just as there, here you get even private pictures and details from participants willingly posted, but your response and also informative details of your planning are still awaited.
Many individual threads about one project, and these without real participation from the OP, are tedious and weak in results. Please be so good and contribute your part as well.

You are absolutely right. I just replied. I am (positively) surprised by the many responses and can’t keep up with the research and thoughts. I will try to stay on top of it. I am very glad about the many answers.

I probably don't have the super-duper passive house windows... but my wall has a U-value of 0.234 and the windows reach 1.02. Factor 4. This means my 186m² 36.5cm PP2 exterior walls lose as much heat as the 40m² window area within them.

Yes, but at 25 EUR additional cost, that would be negligible, wouldn't it?

In that respect, yes. Windows are much, much worse than walls when it comes to thermal insulation.

What you should also consider with your window front... can anyone look into your place? Does the sun blast full-on into the living room? In the end, you spend 90% of the year behind closed shutters or curtains because it’s uncomfortably cold or hot at the window front or you sit on display and all the neighbors and passersby look into your living room...

You can't really see inside. The garden is overgrown. There should be some shading because of the balcony and it shouldn't blast into the living room. Venetian blinds are also present.

Thank you.

I would keep an eye on the room acoustics. And make sure there are enough UV filters.

What do you mean by room acoustics, soundproof windows?

No. Not the sound from outside, but from inside. Smooth, hard surfaces reflect and scatter sound inside the room. Like in a swimming pool. It can quickly become loud or irritating if not enough sound-absorbing materials such as wooden floors, acoustic ceilings, curtains, carpets, or upholstered furniture are installed.

May I ask how? So how can this be controlled? Alarm system in case of burglars?

One can make a break-in more difficult but not prevent it, no matter what you install, and the camera may only show the event afterwards or when it is too late. Today's windows already offer good protection, although the burglar is not the only risk in life and certainly not the worst. Some tips for burglary prevention, partly also from the police, can only be smiled at, they sound nice but help little if someone really wants to get into your house.

Unfortunately, I don't know that. I was advised about the U-values and told that a wall insulates 10 times better than a window.

The energy consultant should be your contact person, I would neglect anything else. It almost sounds so frightening with the 10x that you’d better build without windows; such nonsense, someone wants to scare you and is probably jealous of your big windows.

May I ask how wide it is?

With the position of the sun, the orientation of the house is naturally also important. We have no overhang and with an external venetian blind, that is absolutely no problem at all.

But with 25 EUR extra cost, that would be negligible, right?

What would be negligible? You are speaking in riddles. Just post your project here, then it will be easier for everyone and you will receive better quality answers. As it is, one can often only guess and be wrong, which would be annoying for you and totally unnecessary.

Yes, but at an additional cost of 25 EUR that would be negligible, wouldn't it?

Of course.
You just have to be aware of it and then consciously decide to accept the higher consumption.
If you approach the matter from the point of view of thriftiness, then you could also question the wine cooler, the 80" TV, or the Christmas lights.
Or in the end even TV, wine... or consumption in general, where is it supposed to end.