The blocking time is split with us, for example, and we haven’t noticed anything so far. But we have a 300-liter hot water storage tank.
Blocking time is believed to be between 8:30-9:30 and in the evening between 17:30-18:30. And during this time, hot water is rarely needed, let alone the house cooling down.
Currently, with 200m2 and always at least 23 degrees in winter, we are at 2900 kW in 10 months for the Kfw 70 house. I think that’s quite impressive. And we live at about 500m above sea level, which means easily 30 days of snow in the Black Forest.
The heat pumps have a lot of adjustment potential. For example, we have only recently had a shutdown installed so that the underfloor heating completely switches off after two consecutive days of over 18 degrees. Before, it was “on” all the time.
Hot water at 45° is also enough; it was preset at 50 or 55 degrees.