KfW 55 with wooden house - U-values: Wall 0.18 - Roof 0.16

Just for comparison of the values - solid construction with sand-lime brick, rendered:
For the exterior wall, we have a U-value of 0.176 W/m^2K
Pitched roof: 0.162
Floor slab: 0.31

We only applied for KfW70, but we are annoyed because you simply drop from KfW55 to 70 if you do not meet the conditions - an adjustment "upwards", i.e. from KfW70 to KfW55, apparently does not work...

One more tip: For geothermal energy, definitely spend a few hours here in the forum - also under the keyword "Grabenkollektor". It saved us almost 10k€.

The more I read, the more confused I become: I have now read about an annual primary energy demand of about 73 kWh/m^2a, as well as a transmission heat loss of 0.4. I believe the transmission heat loss is just at the limit of the Energy Saving Ordinance 2014, and the 73 kWh/m^2a also seems a bit high to me.

: Would you have been able to achieve KfW55? Best regards Markus

We will probably achieve KFW55 with the following values:
Windows: Uw = 0.75 ~
Roof and roof slopes: 0.155
Exterior wall: 0.186
Floor slab: 0.166
Front door: 1.2

All this with a [Sole-Water Heat Pump], [Controlled Residential Ventilation], and without a circulation pump (I have learned that this is probably also a factor ^^)

Without the geometry of the house, these values are now only guidelines. Window, wall, and roof proportions are also decisive.

The overall HT we have is 0.246 (where our KFW55 is actually only just achieved)
Q of 31.26 kWh/m²a (this fits quite well with KFW55)

I think so - in the certificate we have just under 40kwh/m^2a and just under 0.3 for the loss, but we have still made a few changes to the insulation all around, removed the circulation, paid attention to heat recovery in the [Kontrollierte-Wohnraumlüftung], etc.

You should also spend a few hours on u-wert.net before construction - the heat demand calculator there is also good.

Is anything other than the components added to HT and Q, or can the values from the table of the structural engineer/building physicist be used there?

If the adjustments you mentioned are still made, could the whole thing look completely different?

Regards
Markus

Without guarantee, as I am not an expert: HT is the weighted average of all components. This is then compared with the weighted average of the reference components. For Q, the technology is also included as well as shading (?) and possibly other parts.