ᐅ Comparison of Geothermal Heat Pump and Air-to-Water Heat Pump
Created on: 8 Aug 2020 22:33
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mjammjammjam
Starting point: In the builder’s cost estimate, an air-to-water heat pump Nibe F2040 with a 180-liter (48-gallon) hot water tank is listed. Additionally, there are electric towel radiators and appropriate insulation to meet KfW-40 house standards. This package is supposed to cost us €13,900.
After some research, I found out that ground source heat pumps have a higher annual performance factor. According to the builder’s catalog, the air-to-water heat pump has a COP of 3.6, while the ground source heat pump has at least 4.5. In this case, it is a Nibe 1255.
Even though I don’t yet know the potential price for the 1255 from the builder, I would like to ask,
I look forward to your answers, as a non-expert I feel a bit lost here (at least I do right now)...
After some research, I found out that ground source heat pumps have a higher annual performance factor. According to the builder’s catalog, the air-to-water heat pump has a COP of 3.6, while the ground source heat pump has at least 4.5. In this case, it is a Nibe 1255.
Even though I don’t yet know the potential price for the 1255 from the builder, I would like to ask,
- what you paid for any borehole drilling for the ground loops?
- how the running costs compare between air-to-water and ground source heat pumps
- what you had to pay for your eligible Nibe units
I look forward to your answers, as a non-expert I feel a bit lost here (at least I do right now)...
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hampshire9 Aug 2020 20:05Everyone claims to have the best heating system. Hardly anyone would admit otherwise unless they feel deceived by a provider. Made a bad choice? Never! Here is our approach.
There is no reason to recommend this type of heating to everyone.
Make a priority list and decide accordingly.
Anyone who chooses based only on cost and manufacturer claims is free to do so. I believe that living comfort in the house is also an important factor.
For us, among other things, "radiant heat that you can feel on your skin" was a priority.
There is no reason to recommend this type of heating to everyone.
Make a priority list and decide accordingly.
Anyone who chooses based only on cost and manufacturer claims is free to do so. I believe that living comfort in the house is also an important factor.
For us, among other things, "radiant heat that you can feel on your skin" was a priority.
We are currently leaning towards a brine-water heat pump with deep drilling and initially around 9 kWp (kilowatt peak) photovoltaic system. At least we want to have the feeling that we are not completely an environmental polluter. We also want to include a rainwater cistern in the plans, although we will probably never fully recover the costs.
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mjammjammjam10 Aug 2020 16:08In Brandenburg, in some cases, you have no choice but to install a cistern because you might not be allowed to discharge rainwater into the sewer system.
mjammjammjam schrieb:
In Brandenburg, sometimes you simply have to build a cistern because you may not be allowed to discharge rainwater into the sewers. Our neighbors don’t have one. So, it is not mandatory where we live.
We are facing the exact same decision.
At the moment, I am leaning towards an air-to-water heat pump because, financially, over the years, there is not much difference for a KFW 55 or 40 house, and I don’t have to deal with a horizontal ground collector. A heating technician here, for example, works exclusively with Wolf systems, combined with a controlled mechanical ventilation system also by Wolf. According to him, both are eligible for BAFA funding.
Although gas is available in our area, we prefer to rely on renewable energy generation. This feels better to me (especially in combination with photovoltaic panels and green electricity, of course).
By the way, a rainwater cistern is mandatory for us, so that decision has already been made for us.
At the moment, I am leaning towards an air-to-water heat pump because, financially, over the years, there is not much difference for a KFW 55 or 40 house, and I don’t have to deal with a horizontal ground collector. A heating technician here, for example, works exclusively with Wolf systems, combined with a controlled mechanical ventilation system also by Wolf. According to him, both are eligible for BAFA funding.
Although gas is available in our area, we prefer to rely on renewable energy generation. This feels better to me (especially in combination with photovoltaic panels and green electricity, of course).
By the way, a rainwater cistern is mandatory for us, so that decision has already been made for us.
hampshire schrieb:
Everyone claims to have the best heating system. Hardly anyone admits otherwise unless they feel deceived by a provider. A poor choice made? Never! Here is our version.
No reason to recommend this type of heating to everyone.
Make a priority list and decide accordingly.
Anyone who decides based solely on cost and manufacturer information is free to do so. For me, living comfort in the house is also an important factor.
For us, among other things, “radiant heat you can feel on your skin” was a priority topic. However, it is important to distinguish between heat generation and heat distribution. The possible combinations are almost unlimited.
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