Frequently asked questions

Calculation method

Estimate: rough orientation without norm claim. Areas from floor area: component areas per DIN/TS 12831-1 sect. 5.1.4, otherwise like detailed (existing stock). Detailed (existing stock): room heat load with manual envelope areas and year-based default U-values (DIN EN 12831-1 sect. 7/8 / DIN/TS 12831-1, Germany).