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Energy and heating costs
The energy savings calculator
With the new energy savings calculator from GEALAN, you can get a rough estimate of how much you would save in heating with the installation of new windows.
Important note :
The energy savings calculator is set up for German climate and conditions, and is only available in German.
The calculator is programmed in Microsoft Excel with VBA macros. To allow the programme to function, it is necessary to set your macro protection to "medium".
Microsoft Excel will always warn you when a file contains macros, as these could be malicious in nature. With the macro protection set to "medium", the programme will grant you the possibility to activate or deactivate each time a file containing macros is opened. Our U-value calculator requires you to activate the macros.