Which air heat pump? What sizing?

Hello everyone,

we are planning our house with an air heat pump. If I understand correctly, the additional electricity consumption depends on the ambient temperature?! Nevertheless, there are differences between the pumps as to from which temperature they start to heat with electricity. I hope I am on the right track so far.

We are planning a 120sqm house with an air heat pump from Vaillant Arotherm vwl 85/3.

How can I find out if the air heat pump is sufficiently sized and does not already start to heat with electricity at -4 degrees?

If further information is needed, please ask briefly.

Regards

Hi, we are also in the process of deciding on an air-to-water heat pump. We received this attachment from our construction company. Tonight, we will discuss the best solution again. I will gladly report back.

We have planned 137 sqm of living space with underfloor heating.