Understand your building before you renovate

Turn building information into a clearer starting point

A practical energy assessment starts with the building envelope: foundations, floors, walls, roof, windows and doors. The application lets you record areas, construction layers and openings alongside heating, ventilation, climate and energy-use information. It then presents the entered information in a structured way so that uncertainty is visible rather than hidden.

The result is useful when you need to decide what to investigate next. It can help distinguish questions about insulation, air leakage, windows, heating equipment or ventilation. It is not a substitute for measuring a building on site, but it can make a first conversation with a qualified professional more focused.

Compare the building as a connected system

Envelope improvements, heating choices and ventilation should not be considered in isolation. A tighter or better insulated building may change comfort, humidity and ventilation requirements. Energy-audit.eu therefore frames recommendations as renovation questions and scenario comparisons, not as a promise that one product will solve every issue.

Where construction layers are entered, the tool calculates thermal transmittance values and uses component areas with climate inputs to estimate heat-loss contributions. Heating and ventilation data provide context for the estimate. Better input data make comparisons more useful; missing or uncertain data should be checked before procurement or compliance decisions.

Use the report as decision support

The report is designed to help you document assumptions, identify priorities and compare possible next steps. It can support a renovation brief, a property-purchase checklist or a discussion with an architect, energy adviser, installer or engineer. It should not be used as a certification, a legal compliance decision or a guarantee of energy savings.

Start with the information you have, note what is uncertain and improve the record as drawings, bills, surveys or professional advice become available. That approach is often more valuable than treating an early estimate as a final answer.

Start a preliminary building assessment

Enter the available building information and use the result to prepare the next practical questions.