Air-to-water heat pump consumption at 30 kWh per day

If you meant me, no we do not have any parallel displacement.

At 22/23 degrees calculated flow temperature and 27/28 degrees flow cutoff temperature and temperatures below zero.

Honestly, I don't understand the sentence. I don't know the terms. What is the calculated flow temperature and what is the flow cutoff? With 22/23 degrees flow temperature, you can't get a living room to 23 degrees room temperature. Depending on the spread, the average of the underfloor heating is still below that. That's already cooling :-P I think I'm missing something...

I have to run about 5°C higher in the supply to reach these temperatures. :eek:
So the heating curve you run in the supply, I run as RL_soll

We have just come to terms with the fact that it makes no sense to keep the bathroom at 23-24° all day ;)

This results from the heating curve.

My condensing boiler calculates a flow temperature for the set heating curve.
This is the value of, for example, 22 degrees, i.e., the desired flow temperature.

Then I have the hysteresis, which is the flow value at which the heating turns off again and remains off until the desired flow temperature is undershot.

At the moment, this is the case at a difference of 5 K, so here at 27 degrees.

So I do not have a fixed flow temperature that remains constant all the time, but it rises slowly.

How could he not notice a water damage?

We have now lowered the heating curve by 1 and the consumption has decreased from 30kWh per day to 20kWh per day. Back then the consumption rose from 20kWh to 30kWh and I couldn't really believe that it was only due to the one degree, but apparently that is the case.

Tenant who has not yet recorded consumption values. Water in the toilet ran very slightly, but over 8 months it added up a lot. Think 400 euros

very interesting, thanks for the clarification :-)

I can also adjust the fan speed on my heat pump. Can you do that too? What values or settings do you have here?