ᐅ Difference in Initial Costs: Gas System vs. Heat Pump

We are planning a new build. The footprint of the house: 10 x 14.5 meters (33 x 48 feet). Ground floor: a household of two retirees. Upstairs, a self-contained apartment for one person.

Heating options / power supply:
a) standard gas boiler
b) ground source heat pump, electricity from the grid
c) ground source heat pump, electricity from own photovoltaic system and possibly battery storage
d) ground source heat pump, electricity from own photovoltaic system, battery storage, and possibly cloud services

So far, we have no information about the price difference between purchasing a standard gas boiler and a ground source heat pump.

Two construction companies said a standard, affordable gas heating system would be sufficient since houses today are so well insulated that the heating demand is not very high. But is that future-proof?

And if a heat pump is chosen, is it better to have electricity supplied from an own photovoltaic system? With or without storage? In addition, a cloud solution?

My opinion on this:

Heat pump instead of gas, because gas is not future-proof, as you already said, even if it is initially cheaper.

Separate photovoltaic from everything else in your mind.
Make the photovoltaic system as large as possible, without a battery storage.
Then the system will earn money for you for the next 20 years and even longer after that. At least if you manage to build it before the 52-gigawatt cap.
If not, it will depend on future political decisions.

If the shell of the building is not yet standing, it won’t be possible before the 52GW cap.

We have an air-to-water heat pump, which cost us an additional €10,000 compared to gas/solar.

@WingVII I can’t fully understand that.
Where does the high additional cost come from? Was it a gas boiler from a "cheap supplier" compared to a heat pump from a "premium supplier"?

Heat pumps do cost more, yes. And there is a bit more effort involved in installation and commissioning.
But if there is such a big difference in price, you were probably taken advantage of.

Another factor to consider is the elimination of the gas connection and chimney connection, both of which are not needed thanks to the heat pump. This should definitely be factored in as well.

Specki schrieb:

But if there is such a big difference, you were definitely overcharged

It is an IDM A3-11. I would consider this one among the better air-to-water heat pumps. Since we are building a turnkey house and looked more at the overall price/performance ratio, we would not say we were overcharged. Furthermore, the differences between gas/solar and air-to-water heat pumps in the range of offers were always between €6,000-10,000. Therefore, your statement is exaggerated or you are simply misinformed.

Since a chimney and solar panels are required for gas, the difference will no longer be significant.