Hello
I am currently facing a problem. Starting from July 1, 2022, the new Climate Protection Act comes into effect in Schleswig-Holstein. My house was built at the end of the 1960s and so far has only been insulated on the roof. At the moment, I have an oil heating system that is about 20 years old and could probably still run for another 5 to 10 years. After that, I planned to switch to gas. But this new law changes everything, as after July 1, I will not easily get approval for a gas heating system. It is also difficult to find information or options. The law states that 15% of the thermal energy must come from renewable sources. None of the options seem to work with my situation. Here is a list of the possibilities and the problems I see with each.
Gas heating with a supplier contract that includes a biomethane share / not possible because my domestic hot water supply is provided by an instantaneous water heater. In this case, the hot water supply must also come 15% from renewables.
Solar thermal / My roof is already fully covered with a photovoltaic system.
Heat pump / my insulation is too poor for this (although I do have an air conditioner in the bedroom that can also provide heating).
Additional pellet stove / I have a large pellet stove in the living room, but it must heat at least 30% of the total living area. This would mean I would have to remove doors between the living room and bedroom.
The domestic hot water supply with the instantaneous water heater is already the most sensible solution for me since I live alone and am often away for work. Therefore, the hot water consumption is very low and is also generated by the photovoltaic system.
Does anyone know another solution to meet the 15% requirement?
I would prefer not to have my heating system replaced in a rush. Also, I don’t even know how quickly the gas connection can be installed.
I appreciate any advice.
Regards
Sebastian
I am currently facing a problem. Starting from July 1, 2022, the new Climate Protection Act comes into effect in Schleswig-Holstein. My house was built at the end of the 1960s and so far has only been insulated on the roof. At the moment, I have an oil heating system that is about 20 years old and could probably still run for another 5 to 10 years. After that, I planned to switch to gas. But this new law changes everything, as after July 1, I will not easily get approval for a gas heating system. It is also difficult to find information or options. The law states that 15% of the thermal energy must come from renewable sources. None of the options seem to work with my situation. Here is a list of the possibilities and the problems I see with each.
Gas heating with a supplier contract that includes a biomethane share / not possible because my domestic hot water supply is provided by an instantaneous water heater. In this case, the hot water supply must also come 15% from renewables.
Solar thermal / My roof is already fully covered with a photovoltaic system.
Heat pump / my insulation is too poor for this (although I do have an air conditioner in the bedroom that can also provide heating).
Additional pellet stove / I have a large pellet stove in the living room, but it must heat at least 30% of the total living area. This would mean I would have to remove doors between the living room and bedroom.
The domestic hot water supply with the instantaneous water heater is already the most sensible solution for me since I live alone and am often away for work. Therefore, the hot water consumption is very low and is also generated by the photovoltaic system.
Does anyone know another solution to meet the 15% requirement?
I would prefer not to have my heating system replaced in a rush. Also, I don’t even know how quickly the gas connection can be installed.
I appreciate any advice.
Regards
Sebastian
sebikiel schrieb:
But would that still be economical?Solar thermal systems are practically never economical anymore.D
Deliverer13 Feb 2022 10:27Domestic hot water can be provided using a hot water heat pump. It operates most of the year on photovoltaic electricity and makes much better use of this energy than an instantaneous water heater.
Additionally, if insulation does not work out as planned, a heat pump can be installed to supplement a fossil fuel heating system. The heat pump runs until the outdoor temperature drops below a certain point, then the existing heating system takes over.
I don’t know how many percentage points these measures could improve efficiency.
I would no longer recommend solar thermal systems. Wherever solar thermal is used, photovoltaic systems are also installed, and that is generally more practical for everyone.
Additionally, if insulation does not work out as planned, a heat pump can be installed to supplement a fossil fuel heating system. The heat pump runs until the outdoor temperature drops below a certain point, then the existing heating system takes over.
I don’t know how many percentage points these measures could improve efficiency.
I would no longer recommend solar thermal systems. Wherever solar thermal is used, photovoltaic systems are also installed, and that is generally more practical for everyone.
B
Benutzer20013 Feb 2022 12:39Benutzer200 schrieb:
Otherwise, the obligation to use may be waived if implementation is not possible due to technical or structural reasons, if it would involve disproportionate effort, or if especially valuable building fabric is present. Did you actually read my entire post?
Benutzer200 schrieb:
Did you actually read my post completely?Yes, I have already read it. My house doesn’t have any especially worth-preserving building fabric. And as I mentioned, the term is very vague and disproportionate. Is a pellet heating system costing 25,000 Euros (about $27,000) really disproportionate compared to a gas heating system costing 6,000 Euros (about $6,500), or is it reasonable when considering climate protection?
guckuck2 schrieb:
A pellet heating system would be an option This solution would suit me best. However, the costs are enormous. There is another room between the heating unit and the potential storage space. This would require complex conveying technology. Additionally, the system itself is significantly more expensive.
Deliverer schrieb:
Domestic hot water could be provided using a heat pump water heater. It runs most of the year on photovoltaic electricity and uses this energy much more efficiently than an instantaneous water heater.
Additionally, if insulation really isn’t feasible, a heat pump can be installed as a supplement to a fossil fuel heating system. It operates until the outside temperature drops below a certain point, then the existing heating system takes over.
I don’t know how many percentage points these measures could improve efficiency.A heat pump water heater wouldn’t be cost-effective for me, as my hot water consumption is extremely low.
The idea of a supplementary heat pump sounds more interesting. In principle, I’m already using this in the bedroom with the air conditioner, where I provide additional heating during transitional seasons. However, this probably won’t be accepted since centralized solutions are usually required. But does a supplementary heat pump provide enough temperature to operate standard radiators?
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