Chargement...
Chargement...
Compare two scenarios using entered heat needs, seasonal performance, prices and quotations. Initial values illustrate the method; they are neither measurements of your property nor commercial offers.
Purchased energy = useful heat / seasonal factor. For boilers, use seasonal efficiency consistent with the fuel; for heat pumps, seasonal performance suited to climate and temperatures, not a single-point COP. Use the same heating/hot-water scope and avoid counting auxiliaries twice in other costs.
Outputs come from the study and technical sheet at the same outdoor and water-flow temperatures. Their arithmetic difference does not certify EN 12831 sizing, modulation, backup, defrost, hot water or emitter suitability. No unit or ventilation flow is automatically selected.
Enter quotation totals including the applicable VAT. Zero means no cost is counted for that package: check for omissions. The eight lines must not overlap.
No priced quotation: the budget is incomplete and payback is not calculated.
Saving = cost before − cost after; higher running costs stay negative. Simple payback = net cost / positive annual saving, only when reached within the horizon. Nominal balance = annual savings × horizon − net cost. Constant prices, excluding discounting, finance, taxes, replacements, degradation and resale.
Only enter grants confirmed for the application; otherwise leave zero. Reduced VAT already included in the quotation must not be deducted twice. The calculator does not determine Klimabonus, enoprimes or VAT eligibility.
Klima-Agence — heat pump planning guideKlima-Agence — grants and conditions