Hello everyone, I already briefly mentioned in my introduction post that my wife and I have big building plans, which we hope to finally realize within the next few years. I don’t know anyone in my close circle of friends who is building a house, so I’m hoping to get some help here, as I naturally have a thousand questions about various topics! Currently, we are focusing a lot on how we want to heat our home and have quickly agreed that we want a heat pump for both heating and domestic hot water. I find the topic very complex, but if I understand correctly, a heat pump mainly uses renewable environmental energy, but also consumes a small amount of electricity. That’s why we would like to combine it with a photovoltaic system. Does anyone here have experience with this and can share their insights? Do you think this is a good idea? I would be grateful for any input!
Yes, I'm satisfied so far. It’s a 6.2 kWp system split evenly between southeast and southwest; plus an LG ESS with a 5.9 kW usable battery. I’m curious to see how it performs after 12 months. Financially, it probably will never pay off because of the expensive battery, but it’s really enjoyable to watch the system working in the meantime.
EdStark schrieb:
Most of it comes from electricity, a small part from the surrounding air, yes. Nonsense. If that were true, the annual performance factor would be well below 2. I have never heard or read about anyone having such a poor value.
Milo3 schrieb:
You should look into a ground-source heat pump. In my opinion, it's currently the best option. For the drilling, you can get an innovation subsidy of €4500 plus €500 from BAFA, which basically covers the cost of drilling, and you can heat cheaply. The heat pump costs roughly the same as an air-to-water heat pump. Best regardsIf I understood correctly, the original poster wants to build in Vienna or the surrounding area, and as far as I know, there are unfortunately no subsidies available for this in Austria.
Please excuse my mistake or lack of knowledge. However, I would prefer this version of the air-to-water heat pump combined with photovoltaic panels. On one hand, the ground maintains a constant temperature, and on the other hand (at least here in Germany) this option is also more cost-effective. Photovoltaic systems without battery storage are more of a hobby, and with battery storage, they become an expensive pastime.
Zaba12 schrieb:
The combination makes sense, but not in this context.What exactly do you mean by that? In what context would it make sense otherwise?
Milo3 schrieb:
Look into a ground-source heat pump. In my opinion, it is currently the best alternative.Is a ground-source heat pump always an option, or are certain conditions required? I thought air-source heat pumps were generally the least complicated. Or am I wrong?
Garten2 schrieb:
If I understood correctly, the original poster wants to build in Vienna or nearby, and as far as I know, there are unfortunately no subsidies for this in Austria.What kind of subsidies? Sorry if these are silly questions, I’m already doing research but the whole topic is huge and honestly a bit overwhelming – so thanks in advance for all the input. I think I first need to figure out which types of heat pumps are even suitable, since ground-source is not always an option as far as I know, whereas air-source usually has no problems. Opinions on combining with photovoltaic systems vary a lot, so maybe I should also get a professional’s opinion on that.
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