Hello community!
We are building with high thermal insulating thermobricks, but only to the Energy Saving Ordinance standard. So far, no KfW55 level, more like KfW70 if you will. The extra cost for better insulation is 7,800€ plus either a photovoltaic system or 4 decentralized ventilation units.
(We don’t have a central controlled ventilation system installed. That’s a separate topic. My wife doesn’t want it and money is tight.)
You have to subtract a 5,000€ grant but add back about 1,500€ for the KfW certification. The subsidized interest rates don’t really offer any advantage or are even worse than regular financing options.
In the end, there are roughly 8,000€ additional costs that you would have to save with reduced energy consumption.
1. Does this take forever? What do you think?
KfW55 will become mandatory by law in 2021. Soon our house would therefore be energy-wise outdated and probably worth less. But KfW70 was still subsidized two years ago and is actually quite good already, right?
2. Even if it might not be economically worthwhile today, would you still opt for better insulation?
3. Can an air-to-water heat pump be operated without issues in a house built to Energy Saving Ordinance standards, or would it then become a major electricity consumer?
We are building with high thermal insulating thermobricks, but only to the Energy Saving Ordinance standard. So far, no KfW55 level, more like KfW70 if you will. The extra cost for better insulation is 7,800€ plus either a photovoltaic system or 4 decentralized ventilation units.
(We don’t have a central controlled ventilation system installed. That’s a separate topic. My wife doesn’t want it and money is tight.)
You have to subtract a 5,000€ grant but add back about 1,500€ for the KfW certification. The subsidized interest rates don’t really offer any advantage or are even worse than regular financing options.
In the end, there are roughly 8,000€ additional costs that you would have to save with reduced energy consumption.
1. Does this take forever? What do you think?
KfW55 will become mandatory by law in 2021. Soon our house would therefore be energy-wise outdated and probably worth less. But KfW70 was still subsidized two years ago and is actually quite good already, right?
2. Even if it might not be economically worthwhile today, would you still opt for better insulation?
3. Can an air-to-water heat pump be operated without issues in a house built to Energy Saving Ordinance standards, or would it then become a major electricity consumer?
4Motion schrieb:
Our ground is very rocky. This could become a huge cost trap.Get a quote first. That way, the “trap” is avoided.
Besides, in this country, anyone drilling usually 80–100 meters (260–330 feet) deep sooner or later encounters bedrock.
Don’t confuse that with the effort of digging a basement pit using an excavator (!).
B
Baumfachmann7 Jan 2018 11:50Hello, air-to-water heat pumps consume a lot of electricity, and the promised energy consumption figures are completely unrealistic, unless you are okay with room temperatures not exceeding 19°C (66°F). With the higher cost, you could heat for a much longer time. For controlled ventilation, I can only recommend it; decentralized ventilation systems are just a temporary solution.
@Baumfachmann
Are you now digging up every old thread just to show your dislike for air-to-water heat pumps? It's starting to get annoying.
My setup will be a KFW 55 standard house with an air-to-water heat pump, a photovoltaic system without a battery, and a fireplace—and I’m looking forward to it.
Are you now digging up every old thread just to show your dislike for air-to-water heat pumps? It's starting to get annoying.
My setup will be a KFW 55 standard house with an air-to-water heat pump, a photovoltaic system without a battery, and a fireplace—and I’m looking forward to it.
B
Baumfachmann7 Jan 2018 12:19Then look forward to the electricity costs
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