Laying network cable

In my opinion, geothermal energy is a great alternative and the future for a small house. Sure, the costs are still high compared to gas, but as I said, gas gets more and more expensive every year.

You are on the wrong track. In fact, gas is becoming cheaper again or has more or less remained stable in price over the last 10 years. Electricity prices, on the other hand, are steadily rising, and costs for heat pumps are not still high but will also remain high as long as the prices for the technology are paid by the end user.

But basically, everything is getting more expensive, and in the long run, over 30 years, it does not really matter what you choose.

In my view, if you build new and rely on gas, you also live in the past.

Yes, that’s your opinion, and in Germany freedom of opinion prevails.

Or rather, many would also like to rely on alternative energies, but since these are usually very expensive, gas is brought into the house after all.

Certainly, many more people would heat their houses with alternative energies. But not as long as in the final analysis the sums remain as they were 20 and 10 years ago and still are today.

Most people build with heat pumps only if it is cost-neutral, or if they are absolutely convinced of it, or their minds have been clouded by salespeople, or gas becomes too expensive, not available, or too far from the house.

However, if it is associated with disproportionately higher additional costs (and this already starts with the price of the system itself), many still end up with fossil fuels. Because purely economically, it is still cheaper.

It is also interesting to see that gas is considered the cleanest fossil energy carrier for cars, and organizations like BSR, BVG, etc., rather rely on gas, which is also promoted from all sides. Including for the average consumer, but when it comes to houses, gas suddenly becomes bad and harmful and pollutes the air, etc., etc. Somehow, there is a double standard, isn’t there?

Many who build simply have the attitude that after 30 years the additional costs for a heat pump are not recouped, so it is not worth it for them.

You do not have them, you can look back at the past and convince yourself with the numbers. The technology is not new at all, even though it is always and everywhere marketed as such. It is just repackaged and somewhat more efficient. But the other heating types have also not stood still in their development.

The difference is also that with heat pumps you have to be meticulous (over the entire service life) to ensure that everything runs 100% and is optimally adjusted. Even a dirty (partial) heat exchanger or an unfavorable installation or too high comfort temperatures or whatever else can ruin the whole calculation and the presumed savings are gone. Here in the forum, questions occasionally arise like: "Hmm, the heat pump consumes too much electricity, what’s going on?"

Other heating sources are not so fussy and react more calmly to disruptive factors. I speak from experience, as I have dealt professionally and privately with both gas and heat pumps.

In my opinion, geothermal energy is a great alternative and the future for a small house.

Yes, exactly, it is an alternative, just like a car is an alternative to a bicycle. Or a house is an alternative to a rental apartment.

By the way, there were Sunday driving bans in the 70s because oil was scarce.

Precisely. Now, 50 years later, although oil has been "scarce" several times and every few years the scaremongering about ending fossil resources is revived, most still heat with fossil fuels. And the good old fireplace is even experiencing a renaissance. Oh yes, and most cars out there (worldwide) still run on petrol/diesel/gas. So what do we learn from that?

Two preliminary remarks: I had largely checked out towards offline hobbies for two days, hence the start with several days of "old" posts; and I only found facade pictures without floor plans in your thread history (Stadtvilla with "traveling windows"), so I am answering without reference to specific room positions.

So would the phone then be connected to the router of the granny flat?

You share the internet, you said; and the tenant is your mother, so a person with whom I have no concerns if our phones share a VLAN. So I would run two cables to the double socket in the granny flat and integrate the user "mother" into two VLANs of the "main router": once telephony for the whole family, and once internet (with its own WLAN access point) only for her. Her phone (DECT/cat.iq) consists of a base that appears as an IP phone from the point of view of the "main router," and one or more handsets – there are also DECT headsets – controlled by her own base. I would rather not register her handset(s) directly on the "main router." She does not need a "sub-router;" the access data for her SIP account can be registered by both the base and the "main router."

The electrician installs a cable including a double socket in every room, also in the granny flat.

A double cable including a double socket, yes.

I want my children to be able to spend 2 hours of car ride also with a book, etc.

A song, one, two, three – from the "mouth organ" in the glove compartment. Or looking out for funny license plates. I (51) believe in the renaissance of the analog natives more firmly than others believe in the end of the world.

But upstairs there is actually nothing but bathroom, sleeping, and children. It's enough for us if there is good WLAN reception there.

WLAN in the sleeping floor but please switchable. By the way: WLAN or socket is the wrong connection; there should be an "and." With equal performance, the "cordless cables" are the most expensive. Not cable and not cordless is yesterday, but the "or."

But do you know how often the oil should have run out already

Yes, that was cool, 1973, Sunday walk on the highway. The youth today don’t experience anything more exciting than the premiere of a new iPhone model.

And the good old fireplace is even experiencing a renaissance. Oh yes, and most cars out there (worldwide) still run on gasoline/diesel/gas.

Who knows, maybe the wood gasifier will make a comeback someday. In twenty years, teenagers will think that e-scooters are for grannies, and hybrid Goggomobiles and cabin scooters will stand in front of the discos *smile*

our charging stations only have a power cable and nothing more, probably the whole thing was installed by an amateur who has no idea because he actually is a baker...

Haha. Bakers, despite all tradition, are hipper than many other professions. In a few years, it will be no rarity to pay at the car charging station with the baker’s discount card – not with that of the oil dealer (who are still deep asleep, whereas the bakers belong to the early adopters).

Why does almost every conversation here first slide down to the personal level and then slowly below the belt?

Sex sells. Or as my late grandmother used to say: Fun must be had at the funeral, otherwise nobody goes.