Electricity consumption heat pump experiences?

That actually sounds quite reasonable. I just can't figure out how 7000 kWh of heat should become 5700 kWh of electricity. That would give the heat pump an annual performance factor of 1.22. Do you have the electricity consumption for the individual months this year?

No idea how valid the estimate is. But I'm just guessing now that the heating rod is actively involved there. The question is how exactly the setup looks. Integrated heating rod, possibly a heating rod built into the storage tank?

238 hours of heating rod might be about 2000 kWh. If the heat pump had done that, it would have been maybe 666 kWh (with an annual performance factor of 3).

But the description of the 2nd heat generator also sounds strange to me (besides the flange heater). For me, the 2nd heat generator is the heating rod integrated into the heat pump. It ran for 7 hours in my case, mostly by accident on the first day of installation.

So I would first find out what is installed here and how. Then clarify which heat generator does what. And then see if that’s necessary. Your pump has enough power to manage without the heating rod. The question would then be whether simply deactivating the heating rod would be enough. But for a new system I would simply approach my heating technician about that.

your heat pump was off according to the read values.

then here added once more :-) I am not the expert.
Currently, the display shows heating
-2.5 outside
25.2 return flow
28.8 forward flow
23.8 target

No idea how valid the estimate is. But I'll just guess that the heating element is actively involved there. The question is what the setup looks like exactly. Integrated heating element, possibly a heating element built into the storage tank? 238h of heating element might be about 2000 kWh. If the heat pump had done that, it would have been maybe 666 kWh (with COP 3). But the description of the 2nd heat generator sounds strange to me as well (besides the flange heater). For me, the 2nd heat generator is the heating element integrated in the heat pump. It ran for 7 hours on my system so far, mostly by accident on the first day of installation. So I would first find out what is installed here and how. And then clarify which heat generator does what. And then see if it has to be that way. Your pump has enough power to manage that without the heating element. The question would then be if simply deactivating the heating element is enough. But for a new system, I would simply turn to my [Heizi].

The mentioned text passages also caught my attention. And I don't see hygienic disinfection against legionella as necessary in a single-family house. Our heating element also only ran for a few hours until the factory service properly commissioned the brine water heat pump and then deactivated it (after a brief remark that he actually wasn't allowed to do that, but did it anyway because he was aware that the activated heating element is nonsense).

No idea how valid the estimate is. But I’ll just guess that the heating element is actively involved there. The question is what the setup exactly looks like. Integrated heating element, maybe a heating element built into the storage tank? 238h heating element might be about 2000kWh. If the heat pump had done that, it would have been maybe 666 kWh (with COP3). But the description of a 2nd heat generator also seems odd to me (besides the flange heater). For me, the 2nd heat generator is the heating element integrated into the heat pump. It ran only 7 hours for me so far and rather by accident on the first day of installation. So I would first find out what exactly is installed here. And then clarify which heat generator does what. And then see if that is necessary. Your pump has enough power to manage that without the heating element. The question would then be if simply deactivating the heating element would be enough. But with a new system, I would just approach my heating technician about that.

Yes, I think the next step is to find out what’s going on with the 2nd heat generator and the flange heater. Regarding thermal disinfection, I also need to reconsider whether we should possibly switch it off.

hi,

Power 12 KW
Thermal disinfection is more for my wife’s sake. It was also recommended to us by the heating engineer. According to my research, it’s actually not necessary and could offer potential savings :)
Consumption: we had about 3200 kWh electricity consumption in our 160 sqm apartment with one child. Now we have one more child, one more large fridge/freezer combo, a few more lights (although all LED now and before), more HO, a little lighting in the garden. In total, we wash and dry more (thanks to the photovoltaic system) and use our steam cooker a lot, which we didn’t have before. So I estimate that consumption of 4000 kWh is not unrealistic. (household electricity)

Not modulating. Today, with a lot more knowledge about it, I would do it differently. But well, you learn from mistakes.

Overall, I actually find the values quite okay for the house size; especially when I look at the low flow values and the small spread in temperatures.

Our household electricity consumption for 2022 is currently also 3800 kWh. Also a 4-person household, 2 adults + 2 small children, freezer, second fridge, etc.