Air-to-water heat pump sizing in new construction

It is not about warm feet with underfloor heating in the shower but about more available heating surface; with a heat pump, you need every sqm in the bathroom as heating surface.

Because you obviously have understood neither the principle of a heat pump nor heating in general.

Oh? Someone here is obviously smarter ... :)

With underfloor heating in the shower, it’s not about warm feet but about more available heating surface; with a heat pump, you need every m² in the bathroom as heating surface.

Just now, warm feet were also mentioned, which apparently are necessary for some homeowners to experience a pleasant, contemporary shower feeling. I don’t need to squeeze out the last fraction of efficiency from the house. There are still some adjustment screws that make more sense. Our bathroom - as it is - is warm enough for us. We don’t miss the 1.2 to 1.5 square meters of heating surface there. Had I visited this forum 1.5 years ago, we might now also have underfloor heating under the showers.

If only... if only... bicycle chain!

Now it’s just not like that, and I won’t burst into tears because of it. Nevertheless, I will have to think about a new heating system in the next few years. Pellet, gas or heat pump...
I have not (intensively) informed myself about any kind of heating system so far. I absorb information, ask questions when something is unclear (which is still a lot at the moment), and process it. Someday I will make a decision... one way or another. You surely didn’t fall from the sky as “experts,” either, right?

And the aroHERM plus is recommended by Vaillant as a heat pump that should also be suitable for existing buildings with classic old-fashioned radiators, as it achieves a flow temperature of 75 °C, which obviously previous heat pumps have not been able to accomplish. Hence my curiosity. Even though there are only two radiators in our house, which can possibly be removed. Surely there are already corresponding models from other manufacturers as well.

The heat pumps all achieve the temperatures, but it is not necessarily sensible/efficient.

Certainly, there will already be corresponding models from other manufacturers.

If you are willing to bear the resulting electricity costs, then this is possible with various heat pumps. A heating system that requires such flow temperatures will make you poor with a heat pump – significantly higher consumption costs than the old oil heating.