ᐅ Heating System for New Construction – Which Is the Best Option?
Created on: 7 Oct 2017 20:33
F
FlohJoe
Hello,
starting next week, I will be building a single-family house of 180 m² (1,938 sq ft). Many details have already been finalized, but I keep changing my mind about the type of heating. Initially, I was convinced to go with a gas condensing boiler combined with tube collectors. Then I considered an air-to-water heat pump. Now I am leaning towards a pellet heating system. There is also the Vitovalor from Viessmann, which I find interesting—generating electricity myself..
Basically, I want to be as self-sufficient as possible regarding energy supply. So, perhaps an air-to-water heat pump with photovoltaic panels and a water-based fireplace? I’m a bit overwhelmed. Maybe someone here can give me some advice on what is feasible..
Best regards, Florian
starting next week, I will be building a single-family house of 180 m² (1,938 sq ft). Many details have already been finalized, but I keep changing my mind about the type of heating. Initially, I was convinced to go with a gas condensing boiler combined with tube collectors. Then I considered an air-to-water heat pump. Now I am leaning towards a pellet heating system. There is also the Vitovalor from Viessmann, which I find interesting—generating electricity myself..
Basically, I want to be as self-sufficient as possible regarding energy supply. So, perhaps an air-to-water heat pump with photovoltaic panels and a water-based fireplace? I’m a bit overwhelmed. Maybe someone here can give me some advice on what is feasible..
Best regards, Florian
Alex85 schrieb:
Don’t forget, geothermal energy has a €5000 (approximately $5400) subsidy from BAFA (they almost fully cover the drilling costs for us) Could you please share what the drilling cost you and when?
I have some quotes from a comparable project in 2012, and they’re nowhere near four figures—definitely not close to the subsidized amount.
So either all drilling companies here in Franconia are charging gold for their holes, or your drilling cost figure is incomplete, meaning the scope of services differs.
Because here with us, we’re looking more in the range of €12,000 to €16,000 (approximately $13,000 to $17,500) for 9.6 kW capacity...
Did you drill deeper than 100 meters (330 feet) in Bavaria?
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winnetou7825 Oct 2017 06:03For me, the drilling costs 6,700 euros, for a 5kW heating system.
@ruppsn has a current offer for work to be carried out in 2018. 100 meters (330 feet) in one borehole with a probe and improved grouting material, including house entry and initial filling with brine. Basically ready to connect for the heating technician, who just needs to hook it up to the heat pump. Includes all the necessary paperwork. Price €6000, disposal of drill cuttings on site (arranging a container) around €300-500. Reputable specialist company.
It saves money to drill only once! No connectors/couplings, no inspection shaft, no relocating the drilling equipment.
I am not familiar with any special regulations in Bavaria.
In North Rhine-Westphalia, there is also progres.nrw funding. €10 per meter (3.3 feet) of drilling depth. However, it remains to be seen whether this will still apply next year when we plan to drill. But if so, it is really a break-even scenario (especially since a brine heat pump, due to the absence of an outdoor unit, is usually €1,000-2,000 cheaper than an air-water heat pump).
It saves money to drill only once! No connectors/couplings, no inspection shaft, no relocating the drilling equipment.
I am not familiar with any special regulations in Bavaria.
In North Rhine-Westphalia, there is also progres.nrw funding. €10 per meter (3.3 feet) of drilling depth. However, it remains to be seen whether this will still apply next year when we plan to drill. But if so, it is really a break-even scenario (especially since a brine heat pump, due to the absence of an outdoor unit, is usually €1,000-2,000 cheaper than an air-water heat pump).
For Bavaria, there is the Energy Atlas with relevant illustrations. In fact, many areas are marked there where geothermal energy is generally excluded or can only be approved after individual case assessment. I didn’t find anything special about the 100m (330 feet) limit on the information pages. But that’s not the problem here; the issue is the completely excessive price.
You need the building’s heating load, and then you simply call a drilling company in the area and ask for a rough price estimate. If it comes out to around €10,000–15,000 (about $11,000–16,500), then that’s just the cost.
You need the building’s heating load, and then you simply call a drilling company in the area and ask for a rough price estimate. If it comes out to around €10,000–15,000 (about $11,000–16,500), then that’s just the cost.
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R.Hotzenplotz25 Oct 2017 09:33The installer just called back. He said he is planning to use a 12 kW heat pump. If the capacity is lower, the unit would otherwise run too often at full load.
Geothermal energy would theoretically be possible... but at an unreasonable cost. He mentioned drilling costs starting from €30,000 and up.
He strongly advised against gas and solar collectors, as that would involve too much equipment for such a large house and the maintenance effort would be too high.
He therefore recommends getting used to the appearance of this unsightly outdoor unit of the heat pump.
Geothermal energy would theoretically be possible... but at an unreasonable cost. He mentioned drilling costs starting from €30,000 and up.
He strongly advised against gas and solar collectors, as that would involve too much equipment for such a large house and the maintenance effort would be too high.
He therefore recommends getting used to the appearance of this unsightly outdoor unit of the heat pump.
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