Hello, my husband and I have the opportunity to purchase a 10-year-old house. The previous owners stated that the monthly gas costs are around 220 EUR per month. The living area is 250 sqm (2,690 sq ft), so it’s quite large. What would be a realistic kW rating for a house of this size?
€uro schrieb:
There is a legal right to this! Make sure it is an energy performance certificate based on calculated demand! If the house is only 10 years old, unfortunately the entitlement is only to a certificate based on actual consumption 😡.
If it is a demand-based certificate, even better 🙂
Regards
E.Curb schrieb:
If the house is only 10 years old, unfortunately there is only an entitlement to an energy consumption certificate 😡. We all know what an energy consumption certificate is worth! 😉
Best regards
P
perlenmann4 Apr 2011 14:19What is the difference between an energy consumption certificate and an energy performance certificate? Which one do you receive for a new build, and what information should typically be included?
perlenmann schrieb:
What is the difference between a consumption certificate and a demand certificate? What do you get for a new build and what should it roughly show? For a new build, you initially receive an energy saving regulation certificate based on the building’s demand for the building permit application. After construction is completed, you receive an energy saving regulation certificate based on the demand of the completed building. In most cases, the results should be identical! 😉 Often, a peculiar situation arises here because the dates of the initial certificate and the final certificate are usually the same! 😉 A clear sign of insufficient construction oversight!
Best regards.
perlenmann schrieb:
What is the difference between an energy consumption certificate and an energy performance certificate?An energy performance certificate is created based on the calculated energy demand. This means that all components of the building envelope (walls, roof, windows, etc.) and the building services systems are evaluated energetically. Actual indoor and outdoor temperatures as well as the user’s heating behavior are completely disregarded in the calculation. In other words, a standard user is assumed.
An energy consumption certificate, on the other hand, only shows the actual energy consumption. Since occupants have heating habits that can vary significantly, the consumption certificate is less representative.
Gissi79 schrieb:
For my new build, I manage with a monthly prepayment of 50€ for natural gas, combined with 10.5sqm (113 sq ft) of solar panels and an LTM ventilation system with heat recovery That doesn’t sound like much money. Have you tested that over a full year, including winter operation?
You should also factor in the energy consumption of the ventilation system. Does it run constantly at a fixed rate, on and off, or is it speed-controlled? How powerful is the motor in such a ventilation system?
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