ᐅ New Single-Family Home Construction – Gas or Air Source Heat Pump + Photovoltaic System + Energy Storage?
Created on: 25 Apr 2021 14:18
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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
nullhorn schrieb:
Hello,
sorry for the late reply.
What do you mean by energy level? Budget for the entire building project is 350,000 to 400,000 (land already owned), size about 250m² (around 2,700 ft²), so no space for flat plate collectors.
Well, as often, a bit of everything. Heating cheaply, being environmentally friendly, and to some extent self-sufficient would also be nice.
But yes, I hadn’t really considered the costs yet. Can you give a rough price comparison between a modern gas heating system versus photovoltaic plus air-to-water heat pump? I have no idea yet, maybe $10,000 vs. $25,000???
Then you really have to think about how much the "environment" is worth to me, because with a difference of $15,000, I can heat with gas for a long time. And yes, my budget is very tight.I’m taking a bit of a risk mentioning numbers here, but I’ll do it anyway. For gas heating with solar collectors according to energy saving regulations, calculate about $10,000, for a heat pump around $15,000 plus $10,000 for the photovoltaic system. That leaves about $15,000 difference.The photovoltaic pays for itself after about 12 years. Heating costs are cheaper with gas, but the photovoltaic system helps with that. I think you can balance them out.
So, that would leave $5,000 extra. It’s doable if the budget allows.
Based on your numbers, I don’t see that being the case for you.
T
T_im_Norden27 Apr 2021 12:59The decision between gas and a heat pump depends on personal views regarding the future price development of gas and electricity.
The initial cost of a heat pump is usually higher than that of a gas boiler, but subsidies are often available for heat pumps, which can significantly reduce the cost difference.
The initial cost of a heat pump is usually higher than that of a gas boiler, but subsidies are often available for heat pumps, which can significantly reduce the cost difference.
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Deliverer29 Apr 2021 10:07Please do not forget to include the gas line, the chimney, and the chimney sweep in the calculations. Also, keep in mind that we will likely need to move away from fossil fuels within the next 10-15 years.
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pagoni202029 Apr 2021 10:19nullhorn schrieb:
Okay, I still need to reconsider everything, and a visit to an energy consultant is unavoidable anyway.No, you don’t necessarily have to. As mentioned here, you can build a completely normal and attractive house without meeting KfW standards, which also frees you from some of the KfW’s requirements.
Also consider whether you want a convenient and reliably functioning solution or if you prefer to dive deeper into the details; what is enjoyable and the perfect system for one person can be a complete nightmare for another. There are many ways to get your house warm.
pagoni2020 schrieb:
or if you would like to dive deeper into it;Probably not. Everything needs to work smoothly, and I want peace of mind. But I do share concerns about dependence on fossil fuels. I don’t want to have to retrofit in 10 or 15 years. After all, you’re not building a garden shed but a home for the next 50 years.
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