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

The transfer efficiency of underfloor heating to the screed or to the finished floor surface could also vary significantly.

Tolentino schrieb:

The transfer efficiency of underfloor heating to screed or to the finished floor could also vary significantly.

That might be the case. Except for the bedrooms, we have tiles everywhere. Tiles conduct heat much better.

Bookstar mentioned that his floor construction is basically the same. Maybe the installation process was different in his case? Well, I can only dream of your energy demands anyway. I hope that at least through the trouble I had with the complex heating system planning, I can achieve relatively more efficiency. For me, it’s worth it since the house has higher demand...

I would like to join the discussion here.
Here are the details:
200 sqm (2,150 sq ft) house.
Modulating 8 kW air-to-water heat pump with a 100 L (26.4 gallons) buffer tank and mixing pump group.
Energy requirements calculation completed.

Heating curve:
18°C (64°F) = 25°C (77°F) target return temperature
0°C (32°F) = 30°C (86°F) target return temperature
-15°C (5°F) = 33°C (91°F) target return temperature

Consumption at -2°C (28°F) outdoor temperature over 24 hours was 29 kWh.
Average run time about 5 hours per cycle.

Bathroom = 22.8°C (73°F)
Other rooms = 22°C (72°F)

Considering the initial problems and the somewhat suboptimal installation, you can be quite satisfied. You managed it well...

Tolentino schrieb:

Considering the problems you had initially and the less-than-ideal installation, you can still be quite satisfied. You managed to get it under control well...

Absolutely. If it stays like this, that’s good.

I just don’t know what to do when the ERR switches off because the room temperature exceeds 30°C (86°F) due to solar gain with open bypass valves.

I tried turning off the actuators before New Year’s Eve, but after that everything ran irregularly again. Well, whatever.