ᐅ New Gas Heating System for a New Build – Is Solar Thermal Needed for Domestic Hot Water?
Created on: 22 May 2017 22:55
M
Marchonisch
Good evening.
Does a new building with a gas heating system actually have to include solar thermal energy for both hot water and heating support, or is hot water alone sufficient? We plan to build with solid construction without external wall insulation. Additionally, we are considering a photovoltaic system. This should be more efficient than solar thermal for heating support, right?
Thank you
Does a new building with a gas heating system actually have to include solar thermal energy for both hot water and heating support, or is hot water alone sufficient? We plan to build with solid construction without external wall insulation. Additionally, we are considering a photovoltaic system. This should be more efficient than solar thermal for heating support, right?
Thank you
B
Bieber081531 May 2017 22:37Nordlys schrieb:
My opinion. I wouldn’t invest more than technically necessary here. Necessary to be able to operate a heat pump later on. That would be my minimum requirement. Then gas condensing boiler, controlled mechanical ventilation [for comfort reasons], and if possible (ask an energy consultant) better to insulate a bit more than to install something expensive on the roof.
B
Bieber08151 Jun 2017 07:06Nordlys schrieb:
Why should one do that? Because it is required by law, for example. Or because electricity is much cheaper than gas and the boiler needs to be replaced anyway. If the rest (meaning the underfloor heating system) is suitable, then you have the option to choose whether the heat is generated with oil, gas, conventional electricity, renewable electricity, or pellets, allowing you to select the best option in each case.
I see it differently than you, Karsten. If the underfloor heating is well designed, you simply have the option to install a heat pump. So you are overall very flexible. If it is poorly designed, you will NEVER be able to install a heat pump without high monthly costs. By the way, it doesn't cost tens of thousands even with significant self-installation. The costs are only extremely high with a general contractor because they make a substantial profit.
I agree with Karsten.
(It might also be due to our increased calmness with age.)
Gas combined with a solar thermal system is the most cost-effective way to satisfy government requirements. At the same time, you have more money available for other things. If the house costs around 200,000 (currency not specified), often because it’s built in the north or is quite simple, there is rarely a desire to install anything other than an affordable heating option.
Those who are willing to spend over 300,000 on their house tend to consider how to implement 55 or 40 standards (energy efficiency targets) more closely than others.
Once you are living in the house, eventually you don’t want to deal with replacements or renovations anymore (unless absolutely necessary).
Nowadays, you can’t really speak of potential depreciation, as the energy saving regulations already require a very high level of efficiency, and the differences in consumption are quite small—unlike older houses from times when people nowadays are switching away from oil, due to the lack of insulation and the use of sealed windows primarily for ventilation purposes.
Of course, everyone sees this somewhat individually, since for one person saving 120 (currency not specified) annually is significant, while for another it’s negligible.
For me, there is no substantial reason to upgrade to a heat pump etc., and gas remains a solid choice.
In my opinion, far too much money is planned for things that are then justified with “but you could do it later.” And I don’t believe that if you don’t plan to do it immediately, you will actually do it later—even if you could.
Brief regards
(It might also be due to our increased calmness with age.)
Gas combined with a solar thermal system is the most cost-effective way to satisfy government requirements. At the same time, you have more money available for other things. If the house costs around 200,000 (currency not specified), often because it’s built in the north or is quite simple, there is rarely a desire to install anything other than an affordable heating option.
Those who are willing to spend over 300,000 on their house tend to consider how to implement 55 or 40 standards (energy efficiency targets) more closely than others.
Once you are living in the house, eventually you don’t want to deal with replacements or renovations anymore (unless absolutely necessary).
Nowadays, you can’t really speak of potential depreciation, as the energy saving regulations already require a very high level of efficiency, and the differences in consumption are quite small—unlike older houses from times when people nowadays are switching away from oil, due to the lack of insulation and the use of sealed windows primarily for ventilation purposes.
Of course, everyone sees this somewhat individually, since for one person saving 120 (currency not specified) annually is significant, while for another it’s negligible.
For me, there is no substantial reason to upgrade to a heat pump etc., and gas remains a solid choice.
In my opinion, far too much money is planned for things that are then justified with “but you could do it later.” And I don’t believe that if you don’t plan to do it immediately, you will actually do it later—even if you could.
Brief regards
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