ᐅ New Single-Family Home Construction – Gas or Air Source Heat Pump + Photovoltaic System + Energy Storage?
Created on: 25 Apr 2021 14:18
N
nullhorn
Hello everyone,
I will be building a house in 2021/2022 and will live in it myself. It’s a 10x10 meter (33x33 feet), 1.5-story standard single-family house. The roof is a pitched roof with a 40-degree pitch, ridge direction North/South (so the roof faces East/West and can be equipped with photovoltaic panels).
Now, my question: Gas is available in the area. Which heating technology would you recommend?
Gas? Air-source heat pump + photovoltaic + battery storage? Ground-source heat pump? Or something completely different?
And who can give me advice like this without any hidden profit motives (like heating installers always pushing gas, etc.)?
Regards,
Flo
I will be building a house in 2021/2022 and will live in it myself. It’s a 10x10 meter (33x33 feet), 1.5-story standard single-family house. The roof is a pitched roof with a 40-degree pitch, ridge direction North/South (so the roof faces East/West and can be equipped with photovoltaic panels).
Now, my question: Gas is available in the area. Which heating technology would you recommend?
Gas? Air-source heat pump + photovoltaic + battery storage? Ground-source heat pump? Or something completely different?
And who can give me advice like this without any hidden profit motives (like heating installers always pushing gas, etc.)?
Regards,
Flo
P
pagoni20205 Sep 2021 21:07Isokrates schrieb:
Why do you think the government promotes heat pump technology, and now only especially efficient models? I understand what you mean.
However, I wouldn’t necessarily deduce any genuine environmental awareness from the mere fact of government subsidies or political decisions; this topic has been known for decades, yet harmful technologies have been supported repeatedly, from coal to combustion engines. After recently watching the agricultural minister’s promotional video together with Nestlé, or, for example, the renewed postponement of piglet castration bans, how should an ordinary citizen believe that decisions in the home construction sector are made solely for climate protection reasons? If that were the case, we would already have speed limits on highways, among other measures.
If politicians truly understood the climate problem, they would have had enough cross-party opportunities in recent decades to turn the tide; even Mr. Kretschmann does not drive anything below a 500-series Mercedes, and he wouldn’t even discuss that.
If gas really is such an extreme pollutant, I would support an outright ban on its installation; then it would simply be because it is harmful to the climate!
But to subsidize it indirectly even through the KfW program, build new pipelines, and at the same time try to stigmatize it as something unacceptable—that doesn’t quite make sense to me.
Isokrates schrieb:
Once these questions have been answered, one should understand what is currently the societal consensus through the elected representatives, and thus the majority of the population. Why is the option of gas heating considered outside of current societal consensus when the aforementioned elected representatives exactly allow this gas heating as an option eligible for KfW support?
There’s something I just have to get off my chest because I find it completely disturbing.
When I look at the “electric cars” driving around here (and there are quite a few now, thanks to Telekom, Post/DHL, Postbank/Deutsche Bank, the United Nations, Bechtle, and others), it makes me sick.
These are all huge vehicles, hybrids with a small electric motor and a large combustion engine. Big SUVs, luxury sedans.
They seem to think they’re the game changers because they drive luxury cars subsidized by the government and provided by their employers, which only have enough battery capacity to get to the nearest organic supermarket.
Hypocrisy at its finest.
When I look at the “electric cars” driving around here (and there are quite a few now, thanks to Telekom, Post/DHL, Postbank/Deutsche Bank, the United Nations, Bechtle, and others), it makes me sick.
These are all huge vehicles, hybrids with a small electric motor and a large combustion engine. Big SUVs, luxury sedans.
They seem to think they’re the game changers because they drive luxury cars subsidized by the government and provided by their employers, which only have enough battery capacity to get to the nearest organic supermarket.
Hypocrisy at its finest.
D
Deliverer5 Sep 2021 21:19It’s quite strange what is being put in my mouth here. Maybe you mean someone else? But alright. I’ll respond to it.
rick2018 schrieb:What ideology? What do you mean?
@Deliverer then you don’t consistently apply your ideology 😉
rick2018 schrieb:Really? I don’t believe that. But we’ll see how the mandatory photovoltaics for new buildings will slow down the construction boom. And of course, 5-15k for a photovoltaic system is a very, very conservative estimate. A "standard" house almost always requires 20 kWp, so around 20k. By the way, you can finance that completely separate from the house loan through the KfW. Oh, and it pays for itself thanks to subsidies. So it ultimately costs nothing and saves money. What other part of the house can say that?
@Deliverer
For many self-builders, 5-15k€ for a photovoltaic system is still too expensive.
rick2018 schrieb:Having money does make many things easier. And I think it feels fantastic to spend it on something meaningful. I don’t understand what heat pumps and photovoltaics have to do with “greenwashing.”
@Deliverer
If you have money, it's obviously easier to greenwash a single-family home project.
It still doesn’t make it “green,” though.
rick2018 schrieb:All true. Did I ever say otherwise? I think we’re probably not that far apart after all.
@Deliverer
Subsidies are usually not good. And just because they exist doesn’t mean it’s the only right path. Look at the history of what has been subsidized.
Oh, fuel cell heating is also subsidized. But according to your view, that’s the wrong way.
Tarnari schrieb:I’m not sure where you get that from my posts. That was not my intention at all. To clarify: most people in this forum probably have a decent income; otherwise, they wouldn’t be interested in building. It’s very expensive in 2021. And I am addressing ONLY those people when I say: in 2021, you should no longer build with gas; that is irresponsible.
4,000€ gross family income and 2,000€ single equals unemployed? Bold statement.
Tarnari schrieb:A regular Golf, at the end of its car life, is cheaper as an electric than as a combustion engine. Yes. You can calculate that with a calculator. Many have already done that. What is your point?
Electric cars cheaper alternative, when a family-suitable car costs about 40,000€?
Tarnari schrieb:Yes, of course. If you don’t have the money, you can borrow it. Monthly payments are returned by the energy supplier. Even after the loan is paid off. Oh, and then you save on electricity bills. Anyone with a roof can install photovoltaics. Or not do the math. BUT: I never claimed otherwise. I said photovoltaic systems have become one of the cheapest energy generation methods thanks to our Renewable Energy Act. You’re welcome to argue against that.
Photovoltaic system affordable? Can an average earner afford a photovoltaic system at an assumed 1,200€ per kWp?
Probably not.
Tarnari schrieb:The poorer people are, the less environmentally damaging their lifestyle is, and the less responsibility they bear. A brief recap: “People building new in 2021 (and who obviously have around €350k or more) should build with heat pumps.”
I stick to it, everything you say is true. But only feasible for the top percentage of the population.
Real environmental protection looks different.
How much does a Golf electric car cost? I don’t know. Fully electric, no hybrid. Also, not a family car for me.
What use is a car that costs less at the end of its life (by the way, I thought this was about environmental protection, not cost-effectiveness) if I can’t afford it in the first place? Most people will probably spend around 6,000 to 17,000 euros on a car. Used.
Now I’m joining the discussion after all. I actually didn’t want to.
What use is a car that costs less at the end of its life (by the way, I thought this was about environmental protection, not cost-effectiveness) if I can’t afford it in the first place? Most people will probably spend around 6,000 to 17,000 euros on a car. Used.
Now I’m joining the discussion after all. I actually didn’t want to.
D
Deliverer5 Sep 2021 21:28Electric cars are practically unavailable on the used market. So, there is no need to discuss that yet. We are talking about new cars. And if someone needs a large van, there still isn’t an electric option available. So, there is no need to discuss that either. All good.
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