Open-source building energy performance calculator following the Dutch NTA 8800 standard. BENG calculations, U-value analysis, heat pump sizing, and thermal bridge assessment.
Building Energy Performance (BENG) calculations following the Dutch NTA 8800 standard with BENG indicator visualization.
Calculate thermal transmittance (U-value) of wall, roof, and floor constructions.
Calculate required heat pump capacity based on building properties and climate data.
Assess thermal bridges and their impact on energy performance.
Visual energy breakdown and monthly performance analysis charts.
3D visualization of the building envelope and its thermal properties.
Project browser for managing multiple buildings. Properties panel for detailed parameter editing.
Generate energy performance reports with print preview. Ribbon toolbar interface with settings dialog.
Native desktop application with Rust backend. CalVer versioning (YEAR.MONTH.BUILD).
Component-based UI with Vite build tooling.