Is Kfw100 sufficient?

2014-09-02 14:14:29

Where is €uro actually? :D

Weird, right? I miss him too. In the other forum, he was really losing it and probably deserves a week off :p

2014-09-02 14:29:14

I miss him already too.

Sure? Rhineland greetings

2014-09-05 23:46:27

[QUOTE="Bauexperte, post: 68373, member: 2942"]Good evening,

"The energy demand of a KfW 70 efficiency house is lower than that of a single-family house built purely according to the Energy Saving Ordinance. Thus, a KfW efficiency house 70 only requires 70 percent of the energy of the reference building defined in the Energy Saving Ordinance = 100%. The smaller the number (KfW 55, 40 or PH), the more energy is saved; the higher the subsidy from the KfW." This is the explanation – in excerpts – on the KfW side.

The step from the reference building to KfW 70 is not that expensive; most providers today already have underfloor heating as standard. What is then usually missing is a heat pump; at least a ventilation system with heat recovery, if a gas/condensing boiler is to be installed. Extra cost for a ventilation with heat recovery approx. EUR 8-9 thousand.

Now you can calculate yourself from rising energy costs when a KfW 70 efficiency house pays off ;)

Rhenish regards

Very general but absolutely correct!
The extra cost for controlled residential ventilation is based on what?
From when does what pay off?
;)

2014-09-06 00:22:45

Good evening,

Very general but absolutely correct!

What do you mean?

What is the surcharge for controlled residential ventilation based on?

Controlled residential ventilation with heat recovery

From when does what pay off?

That cannot be answered in general; every construction project has to be viewed individually, as it depends on many factors—not least the budget and a green conscience. Very roughly speaking, it can only be stated that if you build to KfW 70 standard, you achieve the best price/performance ratio in terms of expenditure and energy savings.

Rhenish regards

2014-09-08 23:10:47

I told you!
Roughly speaking!
And what comes out if I build better than Eff 70.?
Are all such BHs stupid and have too much money or think too green?:rolleyes:
My general advice:
Always build "a little better" than required! Sustainable, of course!!:cool:
Technology (e.g. heat generator) is usually replaceable and is constantly being developed and improved.
Everything in between is a gray area and the imagination of each individual.
Oh, God, now it’s getting even ethical ;)

2014-09-09 00:13:22

Good evening,

Are all these bras stupid and have too much money or think too green? :rolleyes:

Many of them have simply been badly advised. "Stupid" is therefore the wrong adjective ;)

Rhineland greetings

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Is Kfw100 sufficient?

perlenmann

Bauexperte

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Bauexperte

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Bauexperte