ᐅ 2016 KfW Efficiency House 55 based on reference values (U-values)
Created on: 5 Oct 2015 21:40
W
world-e
Hello,
has anyone examined the alternative verification of a KfW Efficiency House 55 based on reference values, which will come into effect from April 2016? Reference values are given to achieve a KfW 55 house:
Roof surfaces, top floor ceiling, dormers U ≤ 0.14 W/(m²·K)
Windows and other transparent components Uw ≤ 0.90 W/(m²·K)
Exterior walls, floor ceilings facing the outside air U ≤ 0.20 W/(m²·K)
However, the U-values do not seem very good to me, especially since the requirements will be tightened again by 20–25% in 2016 and rather correspond to the current KfW 40 standard. In my opinion, the U-values of a current KfW 40 house are considerably better.
I would appreciate your opinions. Thank you.
Best regards
has anyone examined the alternative verification of a KfW Efficiency House 55 based on reference values, which will come into effect from April 2016? Reference values are given to achieve a KfW 55 house:
Roof surfaces, top floor ceiling, dormers U ≤ 0.14 W/(m²·K)
Windows and other transparent components Uw ≤ 0.90 W/(m²·K)
Exterior walls, floor ceilings facing the outside air U ≤ 0.20 W/(m²·K)
However, the U-values do not seem very good to me, especially since the requirements will be tightened again by 20–25% in 2016 and rather correspond to the current KfW 40 standard. In my opinion, the U-values of a current KfW 40 house are considerably better.
I would appreciate your opinions. Thank you.
Best regards
MarcWen schrieb:
Grants for construction supervision are not available for applications submitted before April 2016. They are only granted from April 2016 onwards according to the stricter KfW requirements.
From April, 50% of the costs up to a maximum of 4,000 euros (approx. $4,400) will be subsidized.
I believe I read that this only applies to existing properties, meaning for energy-efficient renovation. Those building new homes usually have enough money anyway...
Can someone please correct me if I'm wrong? Because we are in the same situation.
Fenix2k schrieb:
I think I read that this only applies to existing buildings, so for energy-efficient renovations.
If you are building new, you usually have the budget for it anyway...
Please correct me if I’m wrong. We are actually in the same situation. It also applies to new construction starting in April.
Hello everyone,
what exactly determines the awarding of KFW55 certification?
So...
Thanks for your help
what exactly determines the awarding of KFW55 certification?
So...
- the primary energy demand or the final energy demand?
- annual primary energy demand, transmission heat loss
- or do all U-values really have to be below the KFW55 requirements? For example windows, exterior walls, ceiling, etc.
Thanks for your help
The decisive factors are the primary energy demand and the heat loss through building components.
As I understand it, only in the "Simplified Verification Procedure Based on Reference Values" do the specified U-values need to match exactly. However, it is also possible to perform a "standard" calculation that considers the entire building envelope. In this case, some U-values may be worse than the specified ones, as long as others compensate by being better. This method is generally more complex and costly.
Please correct me if I am completely wrong.
As I understand it, only in the "Simplified Verification Procedure Based on Reference Values" do the specified U-values need to match exactly. However, it is also possible to perform a "standard" calculation that considers the entire building envelope. In this case, some U-values may be worse than the specified ones, as long as others compensate by being better. This method is generally more complex and costly.
Please correct me if I am completely wrong.
Similar topics