My question about building a new KfW 55 or better house: What exactly does it mean? Yesterday, I spoke with the managing director of a public construction company, and he advised me not to build a KfW house.
a) You would need a building supervisor (who is also specialized in this field).
b) If you insulate the house well, etc., the additional costs are low.
Furthermore, he recommended using a gas boiler + solar including battery instead of an air-to-water heat pump + solar including battery. The initial costs are much lower, and you will never recover the higher acquisition costs.
I am a bit confused. I originally planned to build at least a KfW 55 house.
For your information, our plot is fully developed, and a gas connection is available.
a) You would need a building supervisor (who is also specialized in this field).
b) If you insulate the house well, etc., the additional costs are low.
Furthermore, he recommended using a gas boiler + solar including battery instead of an air-to-water heat pump + solar including battery. The initial costs are much lower, and you will never recover the higher acquisition costs.
I am a bit confused. I originally planned to build at least a KfW 55 house.
For your information, our plot is fully developed, and a gas connection is available.
S
saralina8724 Jun 2020 17:39nordanney schrieb:
I actually agree with you there. If it’s only about ecology, then all of this is nonsense, because buying a used house is the most ecological option. Yes, the only problem is that it is still about new construction.
pagoni2020 schrieb:
Uhm... WHERE does it say that? I don’t see it from anyone; neither the pros nor the cons. That’s precisely why most people here were saying it’s NOT just black and white, as you apparently perceived it.
Your slightly aggressive reply surprises me a bit, and the words “violence” and “nonsense” come exclusively from you.
From what I’m reading, the main point was differentiation.
Having a different opinion doesn’t mean your project or your mindset is nonsense. I share the ecological mindset but am critical (which is different from being grumpy) and I do learn something from the discussion.
I don’t believe anyone here wants to ruin your project just because they allow themselves to have a different or more nuanced opinion. Where do you read from me that it’s black and white? I’m actually really interested to know that now.
Especially since I have repeatedly said that this is my very own priority and nobody else has to share it.
I don’t get the feeling that anyone wants to ruin my project. I rather feel that people are determined to prove to me that an “eco house” (please note the quotation marks) is basically no more ecological than a house built to energy-saving regulations. And with all due respect, I still consider that to be incorrect.
By the way, “violence” and “nonsense” are not really such harsh words that you would have to accuse me of aggression. Especially not in the context above.
Build and let build—I'll leave it at that then.
saralina87 schrieb:
And who is actually acting missionarily here? Well, so far you’re the only one who has used terms like “nonsense,” “stupidity,” “rubbish,” and “violence.”
Also, the tendency to categorize things in a black-and-white manner that you show is questionable. It is also telling that you avoid engaging with the content of the discussion and instead drift straight into the rhetoric mentioned above.
saralina87 schrieb:
I rather get the feeling that someone is trying hard to prove to me that a “green house” (please note the quotation marks) is basically no more ecological than a house built to energy-saving regulations. Please provide the exact quote for that, I don’t see that at all.
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saralina8724 Jun 2020 17:54nordanney schrieb:
... who source their electricity from fossil fuels during the heating season? Or from nuclear power? The photovoltaic system doesn’t really help in winter.
So the heat pump is ecological then?Smialbuddler schrieb:
... which also need to be produced and eventually disposed of (see all the polystyrene waste that has been and still is being generated).T_im_Norden schrieb:
Assuming you build your house with a heat pump and use 100% green electricity.
Since only a limited amount of this electricity is available, your consumption will have to be balanced by electricity generated from coal or gas.
This could lead to a situation where it might be more environmentally friendly to produce less CO2 using an efficient condensing boiler than to generate electricity with “high” CO2 emissions in a coal power plant.Tassimat schrieb:
Green electricity always includes bioenergy. That means burning wood and other plants. They just regrow.MayrCh schrieb:
Have you ever looked at how much embodied energy is in an EPS KfW55-standard house? You can hardly burn that off over the lifetime of a simple energy-saving regulation house.You all seem very sensitive today – as if my last post was extremely aggressive... I think it’s clear that it was intentionally written somewhat polemically. So guys, please toughen up a bit.
Anyway, enough discussion has been had on the content – of course, we could now also debate whether biogas plants are so great, but we probably won’t reach agreement there.
The original poster is building and wants to know if KfW55 standard is really necessary. For probably the tenth time: No, it’s obviously not necessary. Does it make financial sense? I don’t know. Is it a clear added value for me beyond financial aspects? Yes, definitely.
But this isn’t really about me, I just shared my thoughts. I’ll leave it at that.
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nordanney24 Jun 2020 18:15saralina87 schrieb:
The original poster is building and wants to know if KfW55 certification is absolutely necessary. For what feels like the tenth time: No, it is definitely not mandatory. Agreed!
However, from the perspective of energy consumption and/or resale value, it is recommended to build as energy-efficiently or "modern" as possible, as long as it is financially reasonable. Ultimately, everyone has to decide that for themselves.
saralina87 schrieb:
So guys, a bit more thick skin, please.Can you expect "thick-skinnedness" when responding to a factual discussion with "polemics"? I’m not sure...T
T_im_Norden24 Jun 2020 18:24Back to the original question
A KfW house simply means that your house has to meet certain KfW requirements to qualify for funding.
So check the KfW websites to see what funding options are currently available.
KfW often involves using a heat pump for heating; there are also subsidies for this, this time from BAFA. So make sure to check their websites as well to find out what funding you can get.
Once you have this information, you can calculate for yourself whether a KfW 55 house is worthwhile.
The only regulation you must comply with is the Energy Saving Ordinance (EnEV).
A KfW house simply means that your house has to meet certain KfW requirements to qualify for funding.
So check the KfW websites to see what funding options are currently available.
KfW often involves using a heat pump for heating; there are also subsidies for this, this time from BAFA. So make sure to check their websites as well to find out what funding you can get.
Once you have this information, you can calculate for yourself whether a KfW 55 house is worthwhile.
The only regulation you must comply with is the Energy Saving Ordinance (EnEV).
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