Hello everyone,
I’m sure someone is very familiar with the requirements of the 2014 Energy Saving Ordinance?!
Planned construction of a bungalow about 130 sqm (around 1400 sq ft) (near a lake, lots of wind).
The contractor’s offer states: "We build according to the 2024 Energy Saving Ordinance," but for the exterior wall with a plaster facade, they propose only a (30cm) (12 inch) Ytong PB PP 2 - 040 block with a U-value of 0.31 W/(m²·K) and a thermal conductivity (lambda) of 0.10 W/(m·K).
If I understand correctly, even Ytong does not recommend this block for a single-layer wall.
An energy performance certificate has already been issued.
Final energy demand 80.8 kWh/(m²·a), efficiency class C
Primary energy source natural gas H
About 5 sqm (54 sq ft) of solar panels for hot water
Underfloor heating
A civil engineer friend now tells us that according to the 2014 Energy Saving Ordinance this wall construction is not allowed. Is the energy certificate “too optimistic”?
The contractor is now suggesting—of course at an additional cost—a 24 cm (9.5 inch) wall with insulation, which we actually did not want. Since many things are running very uncertainly, we are correspondingly unsettled.
Where can we get a clear statement on this? Does anyone know the costs for verifying the calculation?
Thank you very much for any helpful information.
Myjako
I’m sure someone is very familiar with the requirements of the 2014 Energy Saving Ordinance?!
Planned construction of a bungalow about 130 sqm (around 1400 sq ft) (near a lake, lots of wind).
The contractor’s offer states: "We build according to the 2024 Energy Saving Ordinance," but for the exterior wall with a plaster facade, they propose only a (30cm) (12 inch) Ytong PB PP 2 - 040 block with a U-value of 0.31 W/(m²·K) and a thermal conductivity (lambda) of 0.10 W/(m·K).
If I understand correctly, even Ytong does not recommend this block for a single-layer wall.
An energy performance certificate has already been issued.
Final energy demand 80.8 kWh/(m²·a), efficiency class C
Primary energy source natural gas H
About 5 sqm (54 sq ft) of solar panels for hot water
Underfloor heating
A civil engineer friend now tells us that according to the 2014 Energy Saving Ordinance this wall construction is not allowed. Is the energy certificate “too optimistic”?
The contractor is now suggesting—of course at an additional cost—a 24 cm (9.5 inch) wall with insulation, which we actually did not want. Since many things are running very uncertainly, we are correspondingly unsettled.
Where can we get a clear statement on this? Does anyone know the costs for verifying the calculation?
Thank you very much for any helpful information.
Myjako
T
toxicmolotof3 Jul 2015 21:50What exactly is an energy savings certificate? New construction! Which energy am I supposed to save if I don’t even have any consumption data yet?
There is only one energy certificate (in two versions), and both can only be issued once the building is completed.
There is only one energy certificate (in two versions), and both can only be issued once the building is completed.
This is the document the bank requires for the KFW 153 application.
We received it at least directly when signing the contract, and it looks somewhat similar to the energy performance certificate. It contains all the calculations for the individual building components, etc. Someone with expertise here can probably explain it in more detail.
We received it at least directly when signing the contract, and it looks somewhat similar to the energy performance certificate. It contains all the calculations for the individual building components, etc. Someone with expertise here can probably explain it in more detail.
T
toxicmolotof3 Jul 2015 22:29No, this is the online confirmation and it is in black and white. The bank does not require anything more for the KfW.
No idea, in our case it says "Energy savings certificate according to the Energy Saving Ordinance 2014" on the front. And there is a page ("Efficiency Level") that looks like the energy performance certificate (and yes, black and white). The question is what exactly the OP has.
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