Air-water heat pump current consumption and data

The majority of the storage takes place in the screed, which you also have in the timber frame house. The walls may have slightly less mass but I don't think you will notice a big difference.

For fun, I completely turned off the gas heating for 3 days this week. Hot water through solar thermal...
During the day, all blinds up, then we had about 24-25 degrees on the ground floor and upper floor (when we heat, it's also to 24° :p)
In the evening, fireplace on each time, then the 24° could be maintained until midnight. In the morning, it was 22.7° in the house.
But since I work from home in the basement, it was around 20° there after the 3 days... I didn't feel like sitting in the cold, so everything was turned back on :D.
But when the sun is shining, we could quite well remain self-sufficient in terms of heating. If you are willing to give up comfort. Because even at 24°, the floor was still unpleasantly cold.

Question to the group: How would a timber-framed house behave in such an experiment? It should cool down significantly more at night, right??? Are there any experiences?

A timber frame loses much less energy than a solid house, so it would cool down much later.