ᐅ Masonry using Ytong blocks, 24 cm or 30 cm thick, for a single-family house?

guckuck2 schrieb:

Of course, you don’t hang loads on the exterior insulation and finish system (EIFS) or the insulation itself, but on the masonry. You probably wouldn’t hang your kitchen cabinet on the wallpaper either, but rather anchor it through the underlying plaster into the aerated concrete, right? Just save yourself such embarrassing statements.
(...)

Oh dear… Ideally, a screw is loaded in tension; it’s not designed for shear forces. Even if I drill through the EIFS and set the (long) anchor into the sand-lime brick wall… to achieve a secure connection, you need tension on the screw connection, so you have to support yourself against the façade. That might still work for something light like a mailbox, but for heavy items, I’m very skeptical.

Tell me, do you have any technical background to have the audacity to call such technical details—which, of course, hardly anyone thinks about—embarrassing?

guckuck2 schrieb:

(...)
Currently, the basic electricity rate here is 43 cents, gas 18 cents. Factor 2.3. Heat pumps are still clearly advantageous.

Yep. If you ignore the additional cost of 15,000 EUR plus interest, which a heat pump currently costs more than a gas boiler. And, of course, the time spent dealing with a hot water cylinder. I already have my gas boiler installed, while other builders around me are still waiting for their heat pumps, which they ordered long before my gas boiler.

Go heat pump?

PS:
Gas is now again available for 14 cents, and besides that, the price cap applies from March.
Then the factor over 2 years is fixed at 40/12, so 3.33. Bad odds for an air-to-water heat pump.

xMisterDx schrieb:

Oh dear... in an ideal case, a screw is loaded in tension; it is not designed to withstand shear forces. Even if I drill through the external thermal insulation composite system (ETICS) and set the (long) anchor into the sand-lime brick wall... for a secure connection, I have to apply tension to the screw connection, meaning you have to brace yourself against the façade. That might still work for a mailbox, but for heavy objects, I see big problems.

Tell me, do you have any technical background that gives you the audacity to call such technical details, which hardly anyone thinks about, embarrassing?

That is not a technical detail, but simply a theory on your part, which is incorrect. Given the frequency, I do find that embarrassing, yes.

xMisterDx schrieb:

Yep. If you ignore the extra cost of 15,000 EUR (plus interest), which a heat pump currently costs more than a gas boiler. And of course the time spent dealing with a hot water cylinder. I already have my gas boiler installed, while other builders around me are still waiting for their heat pumps, which they ordered well before I installed my gas boiler.

Go heat pump?

PS:
Gas is now available again for 14 cents, and from March the price cap will apply.
So the factor over two years is fixed at 40/12, about 3.33. Bad odds for an air-to-water heat pump.

There was no 15,000 EUR surcharge here, but that was some years ago. Trying to buy something currently overwhelmed by demand is always tricky. Bad timing.
Of course, in your personal situation, it's good that your heating system is already installed. That has nothing to do with the country’s energy problem.

How anyone can be happy about government subsidies, especially in new builds, is a mystery to me. Feel free to keep hoping that this protection mechanism continues indefinitely.

@guckuck2
With an annual performance factor of 2.3, you no longer have any advantage, which is why the subsidy criteria for the SCOP value have been tightened here.
Even the CO₂ balance then nearly equals that of gas or worsens with a decreasing annual performance factor.
(Primary energy factor for gas 1.1 and electricity mix 1.8, even though politics assume 0.0 for heat pumps)

It is not without reason that so many oil heating systems are being reinstalled or remain in operation, even though they have already been declared obsolete.

@xMisterDx
Even a [B]Fischer DuoPower in aerated concrete PP2 starts to hold load only from about 5 kg (11 lbs) depending on diameter, while others drop down to 2 kg (4.4 lbs).
The problem is the low jamb strength as well as tensile strength of the aerated concrete.
Take a look at DIN 68930 "Kitchen furniture – usability – requirements and testing" – even the maximum values of 20-35 kg (44-77 lbs) are already borderline.[/B]

@WilderSueden
In that case, the grid operator occasionally cuts off or throttles power at night if the heat pump plus electric car consume too much electricity overnight.
Even though the main goal is initially to introduce a dynamic electricity price and raise the price during these peak times.

parcus schrieb:

@WilderSueden
If anything, the grid operator sometimes switches off or reduces power at night when the heat pump and electric car consume too much overnight.
Even though the initial goal is to introduce dynamic electricity pricing and increase prices during these peak times.

It’s quite frustrating when you plug in your electric car in the evening, need to drive 500 km (310 miles) the next day, and the grid operator cuts power to the entire street at night due to low renewable output, right?
You get in your car in the morning in a good mood, only to see “Remaining range 40 km (25 miles), would you like to search for a charging station?”

This scenario will soon become normal as we rely more on renewable energy without finally investing sufficiently in energy storage solutions. A 5 kWh (5.5 kWh) battery in the home automatic relay won’t get you far... 5 kWh (5.5 kWh) only provides about 30 km (19 miles) of range in a modern electric car.