Newly built single-family house - gas or air heat pump + photovoltaics + storage?

but what was the argument again for a gas heating system compared to a heat pump?

"I could give you a thousand reasons if I only knew any." (Otto Walkes)

The price. That is necessarily the driving factor for people. Understandable. Politics has to step in. I don’t know how. But as long as climate protection is only feasible for the wealthier, it will be of no use.

It would now be interesting to support this with some numbers. I’m not very familiar with gas boilers and their prices, but you can get a Geisha heat pump for about €3000. Even if a gas boiler were now €1000 cheaper, I don’t think you can have a gas connection installed just for that?!

but what was the argument for a gas heating system compared to a heat pump again?

The purchase saves liquidity - depending on the connection costs.

but what was the argument again for a gas heating system compared to a heat pump?

- heats better (turn it up -> hot)
- the unit is quieter
- doesn’t ruin my garden
- for the same price as an air-to-water heat pump I even have solar on the roof and have hot water all summer for free...
- and the best part – together with the ventilation system I also get the Kfw subsidy...

;-)

THAT seems to be your consistent credo! You act like the savior of the world here and put others one after the other in a shabby corner while at the same time having blockhead-like manners, only to then say: "Oops, I never meant it that way," I just wanted to play...

You really are a silly goose.

- heats better (turn up -> hot)

Does the underfloor heating know that too? Or please tell me how I can teach that to the underfloor heating ;)

- the unit is quieter

Is it? If you at least look at the datasheets of the unit, you will find a sound power of +/- 50db. And surprise, the same numbers also appear for the heat pump.

- does not ruin my garden

Point for you. Although the outdoor unit can also be well integrated (e.g. enclosure). But it does not take up space inside.

- for the same price as an air-water heat pump, I even have solar on the roof and have hot water for free all summer...

My heat pump cost 3,000€. How much did your boiler cost again besides the gas connection?