ᐅ SoleWater Ground Source Heat Pump with Ground Baskets

Created on: 21 Jan 2020 22:05
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Heinziii
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Heinziii
21 Jan 2020 22:05
Hello everyone, we received an offer for a wood-based prefabricated house that includes a brine-to-water heat pump with underground loops.
Does anyone have experience with this? Electricity costs? Issues? There is hardly any information available about these underground loops.
Or would an air source heat pump make more sense?
Or maybe a simple, well-established gas heating system, since the extra costs for the heat pump could be spent on heating for a long time?

But considering the recently increased subsidies, a heat pump does seem reasonable, right? What do you think?

Thank you
Vicky Pedia21 Jan 2020 22:25
Many will probably disagree with me. Wherever gas is available, I install gas condensing boilers. Gas has a very high energy density and will remain affordable in the near future. These appliances are well-proven, low-maintenance, and relatively compact. The widely used air-to-water heat pump tends to have more issues. I had a construction site in the shadow of a mountain (cold air basin). In that case, it probably wouldn’t have worked at all. I believe the homeowners there are quite satisfied with the gas boiler combined with underfloor heating.
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boxandroof
22 Jan 2020 04:47
Gas alone is not permitted. A heat pump (such as an air-to-water heat pump) may, but does not have to be, less expensive to install than a gas heating system plus the necessary additional measures. Geothermal energy is a more elegant technology, but is generally only economical compared to an air-to-water heat pump if implemented through owner contribution (e.g., horizontal loop collector) and due to higher subsidies (BAFA). However, I am not familiar with the latest subsidy changes from 2020.

In cold and snowy regions, I would prefer geothermal energy.

Ongoing operating costs for a well-designed heat pump can be up to 50% lower than those of gas, but with poor implementation and operation they can be higher than gas costs.

Gas systems are more fault-tolerant during implementation. If proper planning of the hydraulics and heating surfaces for a heat pump can be monitored and guaranteed, then in my opinion a heat pump is clearly the more sensible heating option, as it is cheaper to operate and does not rely on fossil fuels. It is advisable for the homeowner to educate themselves and supervise the planners and contractors.
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boxandroof
22 Jan 2020 04:57
Vicky Pedia schrieb:

Many will probably disagree with me. Wherever gas is available, I install gas condensing boilers. Gas has a very high energy density and will remain affordable in the near future. These appliances are well-proven, low-maintenance, and relatively compact. In comparison, the widely used air-to-water heat pump can be more problematic.

From the perspective of a contractor, I can understand that well; heat pumps are not as straightforward as gas heating systems.
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fragg
22 Jan 2020 10:39
Geothermal baskets are usually expensive, and in our case, it was a rejection offer. Google the ring trench collector.