ᐅ Which Heating System for a Prefabricated House: Air Source Heat Pump, Geothermal, Solar Thermal, Photovoltaic
Created on: 2 Jun 2013 11:43
W
wir.zwei
Hello everyone,
we have done quite a bit of research and have decided on a prefabricated house with 150 sqm (1,615 sq ft). Since we want to plan everything carefully and inform ourselves beforehand, without being influenced by the salespeople or consultants from the construction companies, we have a question for you.
We are currently considering how to heat our new prefabricated house. Just a little background: the house will be built in a very rural area (a village with about 100 residents). To the left of the house there is a residential building, another residential building above, and fields below and to the right.
Since we are building without a basement, an oil heating system is not an option.
We are torn between an air-source heat pump, geothermal heating, gas, and a wood pellet heating system.
We also want to optimize this with either solar thermal or photovoltaic systems.
Could you give us some advice or information on what would be the best choice for us, also considering the long term?
Thank you in advance.
we have done quite a bit of research and have decided on a prefabricated house with 150 sqm (1,615 sq ft). Since we want to plan everything carefully and inform ourselves beforehand, without being influenced by the salespeople or consultants from the construction companies, we have a question for you.
We are currently considering how to heat our new prefabricated house. Just a little background: the house will be built in a very rural area (a village with about 100 residents). To the left of the house there is a residential building, another residential building above, and fields below and to the right.
Since we are building without a basement, an oil heating system is not an option.
We are torn between an air-source heat pump, geothermal heating, gas, and a wood pellet heating system.
We also want to optimize this with either solar thermal or photovoltaic systems.
Could you give us some advice or information on what would be the best choice for us, also considering the long term?
Thank you in advance.
B
Bauexperte7 Jun 2013 10:16Hello,
In recent years, we have recommended quite a few units from Daikin (Daikin is a market leader) and even double units where the square meters require it. I have not heard any complaints from our clients about excessive noise. On the contrary, everyone describes that—provided the outdoor unit switches on—this noise is not perceived as disturbing and after a few weeks is no longer consciously noticed. For very sensitive individuals, it is advisable to invest a bit more in piping routes and install the outdoor unit above the mostly present garage.
By the way, there are also compact units designed for indoor installation 🙂
Regards, Bauexperte
klblb schrieb:You are describing a situation that realistically does not occur; the outdoor unit is not running continuously but only “on demand.” And I would bet that late-night returnees, whether cyclists or drivers, and even typical night sounds are louder than the fan.
Sound pressure level (1 m) of about 50 dB(A) corresponds to normal conversation. However, I don’t want to have something that loud constantly, especially not at night, in my garden. The aspect of “peace and quiet from city noise” was important to us when choosing the plot, so I can’t imagine putting such a noisy box in front of the house. It prevents relaxing on the terrace, working peacefully with open windows inside the house, undisturbed sleep with open windows, etc.
In recent years, we have recommended quite a few units from Daikin (Daikin is a market leader) and even double units where the square meters require it. I have not heard any complaints from our clients about excessive noise. On the contrary, everyone describes that—provided the outdoor unit switches on—this noise is not perceived as disturbing and after a few weeks is no longer consciously noticed. For very sensitive individuals, it is advisable to invest a bit more in piping routes and install the outdoor unit above the mostly present garage.
By the way, there are also compact units designed for indoor installation 🙂
Regards, Bauexperte
B
Bauexperte7 Jun 2013 10:40Hello,
However, I would like to give you a real-life example from our appointment yesterday. Modern houses are increasingly like thermos flasks, even when built monolithically (that’s how we build, provided the framework conditions are right). It’s logical, then, that installing ventilation (often decentralized) is advisable. If I add up the costs of a gas condensing boiler, solar system, and decentralized ventilation, I come out cost-neutral compared to a comparable air-to-water heat pump. And – on top of that – you save the costs of a gas connection, which is no longer necessary.
Operating costs for air-to-water heat pumps will increase in the coming years, because subsidies for renewable energies have been drastically reduced. This means that heat pump tariffs will soon align more closely with household electricity tariffs. It will become more expensive, but not because air-to-water heat pumps are electricity guzzlers, as ignorantly claimed by many.
Conversely, gas consumption costs will stabilize at a predictable level – more likely in the short term than medium term. The Americans are flooding the market, biogas plants are increasingly being built, and many cities and municipalities are promoting the expanded use of district heating.
Best regards, Bauexperte
Vit84 schrieb:€uro has already mentioned this to some extent – but unfortunately, I miss his note that a gas condensing boiler can also be more expensive if things go wrong. That’s why I continuously emphasize that there is no single "best" heating system; the external conditions are too individual for that.
Sorry, but that’s just how it is, unfortunately. I wish it were different. I have requested several quotes, and in every case, the air-source heat pump was significantly more expensive than the gas condensing boiler.
However, I would like to give you a real-life example from our appointment yesterday. Modern houses are increasingly like thermos flasks, even when built monolithically (that’s how we build, provided the framework conditions are right). It’s logical, then, that installing ventilation (often decentralized) is advisable. If I add up the costs of a gas condensing boiler, solar system, and decentralized ventilation, I come out cost-neutral compared to a comparable air-to-water heat pump. And – on top of that – you save the costs of a gas connection, which is no longer necessary.
Vit84 schrieb:Sorry, that’s nonsense, but unfortunately a typical human trait. Oops, there’s a noise, so I have to notice it. 🙂
The devices are noisy anyway.
Vit84 schrieb:You are mixing things up here. Apart from the fact that no heating system can operate without electricity, the operating costs of a properly calculated air-to-water heat pump are definitely worth a second and third look. And again – it’s important to carefully examine which heating system really makes sense in each individual case!
Well, and they are also power-hungry, and with these prices, it’s not necessarily worth it.
Operating costs for air-to-water heat pumps will increase in the coming years, because subsidies for renewable energies have been drastically reduced. This means that heat pump tariffs will soon align more closely with household electricity tariffs. It will become more expensive, but not because air-to-water heat pumps are electricity guzzlers, as ignorantly claimed by many.
Conversely, gas consumption costs will stabilize at a predictable level – more likely in the short term than medium term. The Americans are flooding the market, biogas plants are increasingly being built, and many cities and municipalities are promoting the expanded use of district heating.
Vit84 schrieb:That already exists – just as the option to operate a domestic hot water heat pump has been available for a long time.
There are already considerations to power air-source heat pumps with gas instead of electricity.
Best regards, Bauexperte
Good evening,
in my opinion, Euro described this well since he is an expert (building services engineer).
Nowadays, many homebuyers want or have to buy a “standard” house, so the heating concepts are usually predetermined and often “proven” somewhat efficient.
Which private homebuyer today actually hires a building services engineer to plan the building services? 🙄
And how many design offices, architects, etc., work together with a building services engineer to plan the building as a whole? 🙄
Obviously, that should be the ideal case. No question!
For me, heat pumps are a suitable heat source for well-insulated buildings according to current technology.
Unfortunately, demand determines the price.
And many people ask themselves whether the investment of 3000 to 10,000€ from surface collectors to borehole drilling will ever pay off.
For this reason, I personally think it is much more important to focus on proper insulation of the building envelope, because then any heating system will be efficient. 😉
in my opinion, Euro described this well since he is an expert (building services engineer).
Nowadays, many homebuyers want or have to buy a “standard” house, so the heating concepts are usually predetermined and often “proven” somewhat efficient.
Which private homebuyer today actually hires a building services engineer to plan the building services? 🙄
And how many design offices, architects, etc., work together with a building services engineer to plan the building as a whole? 🙄
Obviously, that should be the ideal case. No question!
For me, heat pumps are a suitable heat source for well-insulated buildings according to current technology.
Unfortunately, demand determines the price.
And many people ask themselves whether the investment of 3000 to 10,000€ from surface collectors to borehole drilling will ever pay off.
For this reason, I personally think it is much more important to focus on proper insulation of the building envelope, because then any heating system will be efficient. 😉
Robert.s71 schrieb:
...der Firma yxz hinweisen.... Meanwhile, I find these promotional posts from various users very annoying! Admin? If these one-sided "liberties" do not change, I will say goodbye to this forum!Best regards
B
Bauexperte2 Sep 2013 13:56Hello €uro,
And of all people, you have to repeat the advertisement again? Did you have a bad night’s sleep, a rough weekend, or what exactly is bothering you?
I’m not online 24 hours a day; I also have to make a living from my work! It can never be completely prevented that ads get posted; usually, users notify us quickly, and then the admin or I respond as soon as we have time.
If you are unhappy with our response time, I’m sorry to hear that, but just as I tell everyone else, I will not stop travelers from passing through.
Regards, Bauexperte
€uro schrieb:
By now, these advertising posts from various users are really annoying me! Admin?
Shouldn’t these one-sided “liberties” change, I will say goodbye to this forum!
Best regards.
And of all people, you have to repeat the advertisement again? Did you have a bad night’s sleep, a rough weekend, or what exactly is bothering you?
I’m not online 24 hours a day; I also have to make a living from my work! It can never be completely prevented that ads get posted; usually, users notify us quickly, and then the admin or I respond as soon as we have time.
If you are unhappy with our response time, I’m sorry to hear that, but just as I tell everyone else, I will not stop travelers from passing through.
Regards, Bauexperte
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