ᐅ Air-to-Water Heat Pump: Current Consumption and Data

I can understand the need to check everything. I also go to the heating system at least five times a day.
My wife gets even more annoyed by it than I do 🙄
Apart from the faulty sensor, the system is running great in terms of energy consumption, @Zaba12!

Here’s my current status:
In the last few days (around freezing point), my daily consumption has been 20–28 kWh, including hot water.
COP always between 4.0 and 4.6
SPF currently at 4.3

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

18°C (64°F) = 30°C (86°F) supply temperature
0°C (32°F) = 35°C (95°F) supply temperature
-15°C (5°F) = 38°C (100°F) supply temperature

I’m amazed my consumption isn’t around 35–40 kWh :p
ERR active
Buffer tank active
Bathroom 23.2°C (74°F)
Bedroom 18.5°C (65°F) (right next to the bathroom)
Other rooms 22°C (72°F)

39 heating hours with 7 cycles.

Edit: I also set a hysteresis of 3°C (5.4°F) to extend the operating times. This is likely the reason for the relatively low energy consumption.

Alessandro schrieb:

I can understand the need to keep checking. I also check the heating system at least 5 times a day.
My wife is even more annoyed by it than I am 🙄
Apart from the faulty sensor, the system is running really well in terms of consumption @Zaba12!

Here is my current status:
In the past few days (around freezing point), my daily consumption has been 20-28 kWh including hot water.
COP always between 4.0 and 4.6
SPF currently at 4.3

But now the catch! My heating curve is terribly high:

18°C (64°F) = 30°C (86°F) flow temperature
0°C (32°F) = 35°C (95°F) flow temperature
-15°C (5°F) = 38°C (100°F) flow temperature

I’m surprised my consumption isn’t around 35-40 kWh :p
ERR active
Buffer active
Bathroom 23.2°C (74°F)
Bedroom 18.5°C (65°F) (right next to the bathroom)
Other rooms 22°C (72°F)

39 heating hours with 7 cycles.

This is probably just due to the active ERRs. Check how many VD starts you have. I used to have 60 per day, and if I had kept it running like that, the heat pump would have been dead after a few years.

Now I have 4 in 48 hours. No problem with that. Hysteresis 2 K. It should be 1.5 K and hot water should be blocked at night, but at the moment I don’t care.

It's located at the very bottom of my post.
39 heating hours with 7 cycles.
I'm already curious to see how it performs during the transitional season...

Does it make sense to integrate the high-temperature high-capacity (HTHK) unit into the return line of the bathroom heating circuit? This way, I would have at least a few more watts in the bathroom and a greater temperature difference.

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

Wasn’t the conclusion that you can significantly reduce the supply temperature if you keep the bathroom cooler or use an electric HTHK?