The energy certificate

The energy certificate - the type certificate for your building
The type certificate for your building

Building permit? Housing subsidies? There is no way around an energy certificate! It is, so to speak, the type certificate of your building and provides information about the energy key figures of an object.

With ever stricter legal requirements for the renovation of existing and new buildings, the energy consumption in the building sector is to be sustainably reduced. Here Energy Changes offers you a comprehensive range of services competently and completely from a single source! For example, we support you in sustainably reducing your energy consumption in the existing building or in efficiently planning your new building.

We create energy certificates for all types of buildings, carry out building-related energy audits and certification, implement sustainable energy systems, and take care of funding management and financing issues.

Trust our many years of experience in the construction & renovation sector and save money and energy with our help!

rupert.wychera [at] (Rupert Wychera) (+43 676 847 133 220) and michael.hackl [at] (Michael Hackl )(+43 676 847 133 223) will be happy to answer any questions you may have.


What do I need the energy certificate for?     

  • for every new building, extension and renovation according to the Lower Austria building regulations.     
  • for your application for housing subsidy for new construction, renovation or heating exchange.     
  • for every rental, lease or sale of a property.

Energy performance certificates may only be calculated and issued by authorized and qualified persons. Each energy certificate is valid for ten years from the current date of issue.


What do the energy indicators say?     

  • HWB: The heating requirement describes the amount of heat that must be added to the rooms for heating purposes.     
  • EEB: In addition to the heating energy requirement, the heating energy requirement, the hot water requirement, the heating technology energy requirement and the household electricity requirement are also taken into account in the final energy requirement. The final energy requirement corresponds to the amount of energy that has to be purchased.     
  • fGEE: The total energy efficiency factor is the quotient of the final energy requirement and a reference final energy requirement.

The energy indicators are calculated for the respective site climate and for a reference climate. The reference climate is used to make it easier to compare different buildings