Home energy audit for better household decisions
A home energy audit gives homeowners and buyers a structured way to connect building fabric, heating, ventilation and energy use. Energy-audit.eu is designed for early planning: it helps you record what you know, identify gaps and compare the questions that matter before an upgrade, purchase or professional survey.
Start with the home you actually have
Useful inputs include floor area, construction year, renovation history, wall and roof layers where known, window and door details, heating equipment, ventilation and energy consumption. Do not guess hidden construction simply to complete a form. Marking uncertainty can be more useful than an unsupported value because it shows where a survey or drawing may change the decision.
The application uses entered envelope information to calculate U-values where material layers are available and to estimate heat-loss contributions. It is a preliminary comparison tool; it does not measure airtightness, verify insulation continuity or establish the physical condition of concealed building elements.
Connect comfort, bills and systems
High heating bills can be related to several factors at once: envelope losses, ventilation, heating controls, occupancy, energy prices or a poorly understood system. A home energy audit helps organise those factors instead of assuming that one visible issue explains the whole building.
Heating and ventilation inputs place the envelope estimate in operational context. The tool estimates ventilation loss using building volume and an air-change assumption, with blower-door information when it is entered. This does not replace indoor-air-quality design or a commissioning check.
Prepare a sensible next step
Use the output to decide what evidence to collect and what options to compare. For example, a homeowner may investigate roof insulation and ventilation together, while a buyer may request renovation records, energy bills or a professional inspection before pricing a purchase.
The report is decision support, not a guaranteed saving calculation or a certified audit. Significant work should be planned with qualified local professionals who can assess the property, local rules and detailed design conditions.
Start a home energy assessment
Record the information available for your home and identify the next questions to investigate.
Start your building energy assessmentEnergy-audit.eu provides a preliminary digital building energy assessment and renovation-planning aid. Results depend on the information entered and simplified model assumptions. They do not replace a site survey, detailed moisture design, professional engineering advice, or a certified energy audit where one is required.