Which heating/cooling technology is the most sensible?

Right, 40+. My solar technician specifically answered my question about a storage system with "Please don't do that."

But why always with storage?

It wasn't the seller, rather myself. The general contractor even advised against a battery because they are still in their infancy. My idea (not knowledge) is as follows. We would have an air-to-water heat pump that mainly has to work in winter. We are both at work and the storage is charged (in winter less than in summer, for example). When we come home, we can use the electricity for lighting, heating from the storage, because in the afternoon/evening less photovoltaic power is produced.

I am happy to be enlightened Maybe a gas boiler + photovoltaic system (initially without storage) would make more sense??

Are there also differences in gas boilers? The good/more efficient ones, etc.? So that maybe because an air-to-water heat pump consumes electricity, it is more worthwhile (considering current prices)??

Doesn't work like that. In short, selling excess electricity is still the better solution at the moment, as long as you don't get the battery "for free" through subsidies.

It was not the seller, rather myself. The general contractor even advised against a battery because it is still in its infancy. My idea (not knowledge ) is as follows. We would have an air-to-water heat pump that must operate mainly in winter. We are both at work and the storage is charged (in winter less than in summer, for example). When we come home, we can use the electricity from the storage for lighting, heating, because less photovoltaic electricity is produced in the afternoon/evening.

What kind of storage (size) and what kind of photovoltaic system (size and orientation) do you plan? Because it is actually the case that the yield of the photovoltaic system in winter is at most a drop in the bucket (probably about 5-10% of the annual yield for the three proper winter months November, December, January). Have someone give you a yield forecast for what will be produced in winter and on how many days. The self-consumed electricity is also not free - keyword taxable benefit and taxation.

So, in short: What is offered to you at what price? What does the production, consumption, and storage calculation look like? Afterwards, within the framework of your cost calculation, you will come to the realization that the system is sensible, but you still need to buy the electric car with it.

Thanks, I will do that.

The question remains whether an air-to-water heat pump with a photovoltaic system makes sense. Or if you have a fully developed plot of land including a gas connection, is it better to get a gas boiler. Then there is the question, are there differences between gas boilers. What should you pay attention to? Questions, questions.

Air-to-water heat pump makes sense Photovoltaic system makes sense With gas, you still need solar or photovoltaic for the Energy Saving Ordinance if I’m not mistaken I would not consider a photovoltaic system in connection with the air-to-water heat pump. Photovoltaics deliver little electricity when the air-to-water heat pump needs the maximum.