Free energy calculators

♨️ Heat pump size calculator Get the right heat pump capacity (kW) for your building from area, insulation and climate. 🔆 Solar thermal yield calculator Estimate annual solar energy (kWh) and the share of your hot water it can cover. 🛢️ Hot water tank size Find the right tank volume (litres) for your household and usage. 📈 SCOP / annual performance simulator Estimate seasonal performance (SCOP), yearly electricity and running hours by location. 🌱 CO₂ footprint calculator Compare your current system emissions with a Solimpeks solar + heat pump system. 🔄 Fuel switch savings (energy & CO₂) See the energy (kWh) and CO₂ you save by switching from fossil fuel to Solimpeks. 🧯 F-Gas refrigerant calculator Check refrigerant charge in tonnes CO₂-equivalent and EU F-Gas leak-check obligations. 🧩 System design assistant Get a matched heat pump + buffer + solar + DHW combination and a draft hydraulic schematic.