Heating costs too high? New building

Hello everyone, we moved into our new building this month. However, the heating costs seem relatively high to me. Is it still due to the drying-out phase or are the values reasonable? Now to the key data: E+D house with 175m² underfloor heating - gas heating + storage 8m² solar with heating support central ventilation system with heat recovery Kfw 62 Currently, the following rooms are heated: living, dining 50m² - 21°C sleeping 13m² - 18°C dressing room 8m² - 16°C stairwell, hallway 22m² - 16°C bathroom 11m² - 21°C WC 5m² - 21°C office 11m² - 19°C All other rooms approx. 50m² are not yet heated or set to star mode. At 0°C outside temperature, I have a daily consumption of approx. 10m3 gas. Is that reasonable?

It's fine... but set all rooms to about 21° through the controlled residential ventilation system anyway the air is circulated back and forth... that means you are heating the rooms with stars anyway... then you can just as well let the underfloor heating work and you won't have big temperature differences... which is rather counterproductive with your house concept.

Hello,

...we moved into our new building this month. However, the heating costs seem relatively high to me.

What would you consider normal?

All other rooms, about 50m², are not yet heated or are set to asterisk mode. At 0°C outside temperature, I have a daily consumption of about 10m3 of gas. Is that okay?

With full use and genuinely winter temperatures, this will increase significantly! What then? ;-) Weren't you informed about the consumption costs you will actually have to live with in the long term? Best regards

hm, that's about 3.5KW continuous load over 24h at an efficiency of 85%. you just have to look at what "quality" of gas you get, furthermore there are conversion tables from m³ to kwh, and then divided by 24, I come to approx. 4.2Kw thermal power from the gas with a heating value of 10kWh/m³. and if I look at my own characteristic curve (25 kwh/m²/a at 152m²) I am at about 4.5kW heating power at your temperature. so I would say your consumption fits, since you have less anyway (larger area, but partly unheated).