Heating offer comparison - Please share your experiences

So there is the "Wärmepumpen Verbrauchsdatenbank" on the internet. There you can see actual values from homeowners. If I especially look at the 5kW Panasonic which can already be bought for under 3,000 euros, it doesn't look so bad. The values fluctuate, but I would say on average 1000kWh per year. That corresponds to 300 euros in electricity costs. Then add photovoltaics and smart control. It heats the boiler and the building during the day. My neighbor actually has 300 euros heating costs per year as well!

There is a large fan base around the Panasonic "Geisha" which heats very cheaply.

Anyone building according to the old Kfw 70 standard with 45 kWh per m2 per year has a demand of 5850 kWh for 130 m2. At an annual performance factor that corresponds to 1500 kWh. With the heat pump tariff, that's 300 €.
For thermal 3600 kWh hot water preparation for 4 people, another 180€ are added.

That is then without smart-controlled photovoltaic self-consumption.

I think you have looked at systems without a full year of operation. The 1000kWh of electricity is far too optimistic. With photovoltaics using the Geisha, we reach 1000kWh of electricity purchased per year, but that is not a given and also not an average.

Apart from that, I agree with you. <3t€ for the heat pump, heating costs of 3-500€, no maintenance costs or chimney sweep are, alongside the CO2 consideration, a strong incentive.