New building KfW55 with gas, solar, and controlled residential ventilation with heat recovery

We had the option of gas + DHW or heat pump.

Insulation was the same for both and controlled residential ventilation with heat recovery was mandatory for both.

What did you decide on?

The ultimate does not exist - otherwise there would be no other
You will heat cheaply (running costs) in any case

The ultimate does not exist - otherwise the other one wouldn’t exist
You will heat cheaply (running costs) in any case

I believe that too!
But this ultimate is exactly the "problem"! Everyone says something different and everyone seems to have the ultimate solution

I believe that is one reason why forums like this are not so bad... Opinions are genuine opinions and not somehow motivated.

What did you decide on?

Heat pump. ST is nonsense.

Heat pump. ST is nonsense.

A heat pump with drilling costs about €12,000 more with the providers we have visited so far. Is that a realistic price increase?
We would prefer a heat pump, controlled residential ventilation with heat recovery, and a photovoltaic system. But that probably won't fit our budget.
We don't want ST, but will accept it because it doesn't work any other way with gas. Or are we misinformed about that?