Air-water heat pump current consumption and data

I can understand the checking thing. I also go to the heating system at least 5 times a day.
My wife is even more annoyed by it than I am :rolleyes:
Apart from the defective sensor, the system runs great in terms of consumption !

Here is my current status:
In recent days (always around the freezing point) I had a daily consumption of 20-28kWh including hot water.
COP always between 4.0 and 4.6
SPF currently at 4.3

But here’s the thing! My heating curve is terribly high:

18°C = 30° flow temperature
0°C = 35° flow temperature
-15°C = 38° flow temperature

That is actually unworthy of a new building, but your hydraulics probably don't allow more. For the heating curve, the consumption is still moderate...

We already thoroughly discussed this topic in your thread, didn’t we? Your bathroom has too little pipe spacing, and with HTHK there is a risk that the heat pump will start cycling again because the return flow rises too strongly and quickly due to the short heating circuit.

Wasn’t the consensus that you can significantly reduce the flow temperature if you make the bathroom colder or use an electric HTHK?

No, we didn’t.
The HTHK has its own heating circuit.
My idea now was to connect the HTHK in series (in the return flow) to the bathroom’s heating circuit so that it at least still gives off a bit of heat.

That is actually unworthy of a new building, but your hydraulics probably can’t do more. For the heating curve, the consumption is still moderate...

I accept that for a warm bath ;)
What bothers me more at the moment than the heat pump is the humidity in the bathroom. After showering, I have to ventilate so that the temperature drops by 2K and the relative humidity stays below 60%.
I hope that it is really due to the residual moisture of the new building. It has definitely gotten a bit better.

I'll accept that for a warm bath ;)
What bothers me more at the moment than the heat pump is the humidity in the bathroom. After showering, I have to ventilate so that the temperature drops by 2K and the relative humidity stays below 60%.
I hope that this is really due to the residual moisture of the new building. It has definitely gotten a little better.

No controlled residential ventilation (or other ventilation concept)?

nope, my wife didn’t want that at first. Now she would like a central or decentralized ventilation system for the bedrooms and bathrooms! :mad: :rolleyes: The problem is, as always: everything is finished! I don’t have a cavity ceiling. For a decentralized ventilation system, the electrical wiring is missing, and a central ventilation system for the entire upper floor only makes sense in the attic. However, since I have a cold roof, that will be difficult. I don’t know of any controlled residential ventilation system that can operate at such low ambient temperatures... But I have to say that the air everywhere is almost perfect and basically no controlled residential ventilation would be necessary. Apart from the humidity in the bathroom, I don’t see any reason for it either.

However, since I have a cold roof, that will be difficult. I am not aware of any controlled residential ventilation system that can operate at such low ambient temperatures...

It will be insulated and enclosed for us.