Our four-unit building (390 sqm (4,198 sq ft)) is still looking for the right heating system to meet the city’s KfW55 requirement.
Therefore, a question about the possibility of a groundwater heat pump:
We already know that this system would likely achieve high efficiency (annual performance factor >4), so the additional cost compared to gas plus solar thermal or an air-to-water heat pump for our heating demand would likely be recovered relatively quickly (about 10–16 years). But what are the potential disadvantages that we might not yet be aware of? Is a groundwater heat pump more maintenance-intensive?
(Regarding the conditions, if anyone is interested:
According to the soil expert, a groundwater heat pump is probably feasible here (one was successfully installed 300 m (984 ft) away). To verify whether this will work, a borehole would first have to be drilled to 20 m (66 ft) to definitively assess the composition of the soil and water. This borehole would then serve as the infiltration well.
Cost for the first borehole including everything: €3500, total cost for borehole and pump in the end: €16,500. We would be investing this first amount at risk, with the possibility that we cannot install the system and would “only” have an expensive domestic water well. Hence the inquiry here.)
Therefore, a question about the possibility of a groundwater heat pump:
We already know that this system would likely achieve high efficiency (annual performance factor >4), so the additional cost compared to gas plus solar thermal or an air-to-water heat pump for our heating demand would likely be recovered relatively quickly (about 10–16 years). But what are the potential disadvantages that we might not yet be aware of? Is a groundwater heat pump more maintenance-intensive?
(Regarding the conditions, if anyone is interested:
According to the soil expert, a groundwater heat pump is probably feasible here (one was successfully installed 300 m (984 ft) away). To verify whether this will work, a borehole would first have to be drilled to 20 m (66 ft) to definitively assess the composition of the soil and water. This borehole would then serve as the infiltration well.
Cost for the first borehole including everything: €3500, total cost for borehole and pump in the end: €16,500. We would be investing this first amount at risk, with the possibility that we cannot install the system and would “only” have an expensive domestic water well. Hence the inquiry here.)
H
hampshire26 Oct 2020 09:03rick2018 schrieb:
Ice storage systems are too expensive and complex for single-family homes.This is not a single-family home.
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