Hello everyone,
we are currently planning to build a relatively large single-family home (living area, including the rooms in the basement used as living space, around 450 sqm (4844 sq ft)).
In addition, we are building an outdoor pool, which should also be heated from April to October. Ideally, it should not have a separate heating system but be integrated into the overall heating concept.
I generally prefer to invest a bit more upfront in order to have lower ongoing costs.
The construction companies mostly recommend an air-to-water heat pump because it requires the least effort for them (no chimney needed, no solar system required).
However, I am somewhat skeptical about heating such a large house and the pool only with a heat pump.
Therefore, the question is:
What would be a reasonable solution for the heating? Heat pump? In combination with solar thermal or photovoltaic? Gas condensing boiler with solar thermal or photovoltaic? Or perhaps even a small combined heat and power plant?
I would really appreciate any input on this.
we are currently planning to build a relatively large single-family home (living area, including the rooms in the basement used as living space, around 450 sqm (4844 sq ft)).
In addition, we are building an outdoor pool, which should also be heated from April to October. Ideally, it should not have a separate heating system but be integrated into the overall heating concept.
I generally prefer to invest a bit more upfront in order to have lower ongoing costs.
The construction companies mostly recommend an air-to-water heat pump because it requires the least effort for them (no chimney needed, no solar system required).
However, I am somewhat skeptical about heating such a large house and the pool only with a heat pump.
Therefore, the question is:
What would be a reasonable solution for the heating? Heat pump? In combination with solar thermal or photovoltaic? Gas condensing boiler with solar thermal or photovoltaic? Or perhaps even a small combined heat and power plant?
I would really appreciate any input on this.
We spent over six months calculating together with specialists.
The investment and maintenance costs for a heat pump are much higher than for gas.
Given the heating demand, you need several heat pumps or a very large one.
Additionally, the efficiency is not optimal, especially in spring and autumn. Munich is also not the warmest area.
A ground-source heat pump has an even higher initial investment but lower maintenance costs. Usually, you need to drill again after 20 years.
We also considered a combination of a fuel cell and gas. These systems typically stop at around 30 kW, so we discarded this option. Not to mention the initial investment.
We are planning/building a villa in Bauhaus style with over 600 m2 (6,458 sq ft) and a stainless steel pool 20 meters (66 feet) long in southern Baden-Württemberg. Based on these key figures, the projects seem quite comparable.
For the pool, it is important to size the sewer connection large enough. During backwashing, considerable amounts flow through the pipe at once.
I assume you are building with an architect and contracting trades individually?
The investment and maintenance costs for a heat pump are much higher than for gas.
Given the heating demand, you need several heat pumps or a very large one.
Additionally, the efficiency is not optimal, especially in spring and autumn. Munich is also not the warmest area.
A ground-source heat pump has an even higher initial investment but lower maintenance costs. Usually, you need to drill again after 20 years.
We also considered a combination of a fuel cell and gas. These systems typically stop at around 30 kW, so we discarded this option. Not to mention the initial investment.
We are planning/building a villa in Bauhaus style with over 600 m2 (6,458 sq ft) and a stainless steel pool 20 meters (66 feet) long in southern Baden-Württemberg. Based on these key figures, the projects seem quite comparable.
For the pool, it is important to size the sewer connection large enough. During backwashing, considerable amounts flow through the pipe at once.
I assume you are building with an architect and contracting trades individually?
I hope you have a specialist on board for this. This is not a run-of-the-mill project.
I assume there isn’t much experience with pools, etc., either? How are you controlling the house? KNX?
You will probably exceed the energy saving regulations by a significant margin, but without meeting the requirements for a true KfW55 standard.
You need the photovoltaic system to reach the renewable energy share. If you also have an air conditioning system with a heat pump, that counts as well.
Alternatively, biogas can be used, but it is not cost-effective.
The photovoltaic system covers at least part of your own energy consumption. Currently, energy storage does not pay off. It’s basically a break-even game. For securing the network and home automation, it’s better to rely on uninterruptible power supplies (UPS).
Storage is more of a gimmick or useful only if the photovoltaic system significantly exceeds your own consumption.
But just the circulation pumps, pool control, network, etc., already consume a lot...
I assume there isn’t much experience with pools, etc., either? How are you controlling the house? KNX?
You will probably exceed the energy saving regulations by a significant margin, but without meeting the requirements for a true KfW55 standard.
You need the photovoltaic system to reach the renewable energy share. If you also have an air conditioning system with a heat pump, that counts as well.
Alternatively, biogas can be used, but it is not cost-effective.
The photovoltaic system covers at least part of your own energy consumption. Currently, energy storage does not pay off. It’s basically a break-even game. For securing the network and home automation, it’s better to rely on uninterruptible power supplies (UPS).
Storage is more of a gimmick or useful only if the photovoltaic system significantly exceeds your own consumption.
But just the circulation pumps, pool control, network, etc., already consume a lot...
No, so far we unfortunately do not have a specialist at hand, as the recommendation from the construction company of 1-2 heat pumps, and without photovoltaic panels because they only cost money, did not seem quite ideal to me.
Because of the pool, there is not much experience so far – but it will not be built by the construction company, rather by a separate pool builder. Therefore, coordinating the heating will also be somewhat challenging.
From which point does a separate pool heating system (e.g., using a heat pump) make sense?
Because of the pool, there is not much experience so far – but it will not be built by the construction company, rather by a separate pool builder. Therefore, coordinating the heating will also be somewhat challenging.
From which point does a separate pool heating system (e.g., using a heat pump) make sense?
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