Dear forum members,
I am new here and, to be honest, I haven’t read all the previous posts yet, so a similar topic might already be discussed.
We are a family with three small children and are fortunate to be allowed to build in our hometown near Regensburg. In 2011, we built a small 145 sqm (1,560 sq ft) Tuscan-style house, but unfortunately, it no longer meets our needs, so we are planning to build again. Our current home is heated with a groundwater heat pump including cooling (which we rarely use). Overall, we are satisfied with the heating results, although on cold winter days, I miss the comfortable “warm feet feeling” that I have experienced with friends who have pellet or gas heating. What bothers me more is that our hot water takes quite a while to heat up and only reaches a temperature where I can still comfortably keep my hand under it.
We are considering a pellet heating system, but to be honest, we haven’t really researched heating systems at all yet—and a lot has probably changed in the last eight years. Our architect has proposed a compact heat pump with a central ventilation system and hot water storage, as this would likely be cheaper than a pellet system with central ventilation. However, for the heat pump, we definitely do not want an outdoor unit. An indoor installation might be possible, but we have concerns about the noise.
Is a central ventilation system really necessary or required? Currently, we have a decentralized ventilation system, which works well overall, but I am quite bothered by the plastic covers inside, which have yellowed over time.
What are your experiences? Ventilation—yes or no?
Heating—pellet, compact unit, or something else?
Thank you very much!
Best regards, Stefanie
I am new here and, to be honest, I haven’t read all the previous posts yet, so a similar topic might already be discussed.
We are a family with three small children and are fortunate to be allowed to build in our hometown near Regensburg. In 2011, we built a small 145 sqm (1,560 sq ft) Tuscan-style house, but unfortunately, it no longer meets our needs, so we are planning to build again. Our current home is heated with a groundwater heat pump including cooling (which we rarely use). Overall, we are satisfied with the heating results, although on cold winter days, I miss the comfortable “warm feet feeling” that I have experienced with friends who have pellet or gas heating. What bothers me more is that our hot water takes quite a while to heat up and only reaches a temperature where I can still comfortably keep my hand under it.
We are considering a pellet heating system, but to be honest, we haven’t really researched heating systems at all yet—and a lot has probably changed in the last eight years. Our architect has proposed a compact heat pump with a central ventilation system and hot water storage, as this would likely be cheaper than a pellet system with central ventilation. However, for the heat pump, we definitely do not want an outdoor unit. An indoor installation might be possible, but we have concerns about the noise.
Is a central ventilation system really necessary or required? Currently, we have a decentralized ventilation system, which works well overall, but I am quite bothered by the plastic covers inside, which have yellowed over time.
What are your experiences? Ventilation—yes or no?
Heating—pellet, compact unit, or something else?
Thank you very much!
Best regards, Stefanie
Snowy36 schrieb:
I still don’t understand what benefit I get without storage from the fact that the photovoltaic system generates a lot of electricity for me in the summer, which I don’t need then but need in the winter. Unless I have air conditioning.Monthly advance payments into your checking account. Feels good.
H
hampshire28 Jun 2019 19:51Lumpi_LE schrieb:
what do you want to do with the power at night? For example, cover the basic load of the house, such as lighting and computers, or start the cleaning machines early in the morning when the roof power is not yet sufficient...
Early in the morning before 6 a.m., there’s no need to run cleaning machines.
From my experience, during summer we rarely need to buy more than 2, and in exceptional cases up to 3 kWh of electricity per day. There might be different supply temperatures, so my question is what he plans to do with the electricity at night.
A storage system becomes more interesting in winter since we need to purchase quite a bit more electricity then. However, you would need around 30 kWp on the roof to have any surplus left for the battery.
A 3-4 kWh battery would be great for us. As soon as SolarEdge offers one for under $2000, we’ll buy it.
From my experience, during summer we rarely need to buy more than 2, and in exceptional cases up to 3 kWh of electricity per day. There might be different supply temperatures, so my question is what he plans to do with the electricity at night.
A storage system becomes more interesting in winter since we need to purchase quite a bit more electricity then. However, you would need around 30 kWp on the roof to have any surplus left for the battery.
A 3-4 kWh battery would be great for us. As soon as SolarEdge offers one for under $2000, we’ll buy it.
H
hampshire28 Jun 2019 20:47If it is properly sealed, you have wind resistance in winter – but we are not implementing that right away.
If done correctly, you wouldn’t actually build a new house. Because hundreds of thousands of kilowatt-hours of energy are wasted in the process (not even counting the muscle power and its generation).
So, what is the topic here?
As mentioned, during the summer, around 40-45 kWh come from the roof, while the house consumes 10-12 kWh.
In winter, it’s the other way around. Overall, the balance is roughly zero with an annual consumption of 6500 kWh and a 6.82 kWp photovoltaic system.
I think it’s good. It works and it pays off, even without self-consumption. The self-consumption rate is about 33% without a battery.
The idea of a battery is understandable and smart. Unfortunately, they are too expensive—both economically and environmentally. Yuck.
Otherwise, I would have bought one right away, because one thing is clear: if you want a battery, it’s best to install it when setting up the photovoltaic system, since you can then reclaim the value-added tax on the investment. Retrofitting (currently) does not offer this benefit.
So, what is the topic here?
As mentioned, during the summer, around 40-45 kWh come from the roof, while the house consumes 10-12 kWh.
In winter, it’s the other way around. Overall, the balance is roughly zero with an annual consumption of 6500 kWh and a 6.82 kWp photovoltaic system.
I think it’s good. It works and it pays off, even without self-consumption. The self-consumption rate is about 33% without a battery.
The idea of a battery is understandable and smart. Unfortunately, they are too expensive—both economically and environmentally. Yuck.
Otherwise, I would have bought one right away, because one thing is clear: if you want a battery, it’s best to install it when setting up the photovoltaic system, since you can then reclaim the value-added tax on the investment. Retrofitting (currently) does not offer this benefit.
We have a red roof, so the appearance of photovoltaic panels would really bother me. Such a system also costs a considerable amount, and the payback period is usually between 10 and 15 years. So normally, no one would invest in it. The advantage, however, is that the (low) return is relatively secure and predictable.
Still, I am generally against photovoltaic systems. There are better investment options and far more important aspects in house construction.
I believe my opinion aligns with the majority of home builders, judging by new residential developments. Photovoltaic systems are extremely rare here—maybe only 1 in 20 houses still install them.
Still, I am generally against photovoltaic systems. There are better investment options and far more important aspects in house construction.
I believe my opinion aligns with the majority of home builders, judging by new residential developments. Photovoltaic systems are extremely rare here—maybe only 1 in 20 houses still install them.
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