Heat Pump Sizing for 236 m² (2,540 sq ft) — Central Europe / DACH (-12°C Design, DE/CH/AT/NL)
Thermal heat loss calculation, recommended heat pump capacity (kW, BTU/h & HVAC Tons), SCOP efficiency, and annual electricity consumption.
Recommended Heat Pump15.5 kW52,888 BTU/h (4.41 Tons)
Annual Electricity Usage8,245 kWh/yrDelivers 31,332 kWh Heat (SCOP 3.8)
Savings vs Direct Electric23,087 kWh/yrSpecific Load: 63.2 W/m²
Electrical Circuit (230V)30 A BreakerPeak Compressor Input: 5.17 kW
Thermal & Electrical Specification Table (236 m² / 2,540 sq ft)
| Heated Floor Area | 236 m² (2,540 sq ft) |
| Climate Zone & Design Outdoor Temp | Central Europe / DACH (-12°C Design, DE/CH/AT/NL) |
| Building Insulation Envelope | Standard Double-Glazed Insulation (55 W/m² Base) (63.2 W/m² Peak) |
| Peak Space Heating Load | 14.92 kW Thermal |
| Recommended Heat Pump Output (Incl. DHW) | 15.5 kW (52,888 BTU/h · 4.41 Tons) |
| Seasonal Coefficient of Performance (SCOP) | 3.8 (340%–450% Seasonal Efficiency) |
| Annual Heat Demand vs Electricity Consumed | 31,332 kWh Heat → 8,245 kWh Electricity |
Frequently Asked Questions
What kW size heat pump do I need for a 236 m² (2540 sq ft) house?
For a 236 m² (2540 sq ft) building with Standard Double-Glazed Insulation (55 W/m² Base) in Central Europe / DACH (-12°C Design, DE/CH/AT/NL), the peak space heating load is 14.92 kW (63.2 W/m²). Including domestic hot water allowance, a 15.5 kW (52,888 BTU/h / 4.41 Ton) heat pump is recommended.
How many kWh of electricity does a 15.5 kW heat pump use per year?
With a Seasonal Coefficient of Performance (SCOP) of 3.8 over 2100 full-load equivalent heating hours, the heat pump consumes approximately 8,245 kWh of electricity per year to deliver 31,332 kWh of heat — saving 23,087 kWh/year compared to direct electric radiators.
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