Heat Pump Sizing for 80 m² (861 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 Pump8.4 kW28,662 BTU/h (2.39 Tons)
Annual Electricity Usage4,322 kWh/yrDelivers 16,422 kWh Heat (SCOP 3.8)
Savings vs Direct Electric12,100 kWh/yrSpecific Load: 97.7 W/m²
Electrical Circuit (230V)16 A BreakerPeak Compressor Input: 2.8 kW
Thermal & Electrical Specification Table (80 m² / 861 sq ft)
| Heated Floor Area | 80 m² (861 sq ft) |
| Climate Zone & Design Outdoor Temp | Central Europe / DACH (-12°C Design, DE/CH/AT/NL) |
| Building Insulation Envelope | Older Uninsulated Building (85 W/m² Base) (97.7 W/m² Peak) |
| Peak Space Heating Load | 7.82 kW Thermal |
| Recommended Heat Pump Output (Incl. DHW) | 8.4 kW (28,662 BTU/h · 2.39 Tons) |
| Seasonal Coefficient of Performance (SCOP) | 3.8 (340%–450% Seasonal Efficiency) |
| Annual Heat Demand vs Electricity Consumed | 16,422 kWh Heat → 4,322 kWh Electricity |
Frequently Asked Questions
What kW size heat pump do I need for a 80 m² (861 sq ft) house?
For a 80 m² (861 sq ft) building with Older Uninsulated Building (85 W/m² Base) in Central Europe / DACH (-12°C Design, DE/CH/AT/NL), the peak space heating load is 7.82 kW (97.7 W/m²). Including domestic hot water allowance, a 8.4 kW (28,662 BTU/h / 2.39 Ton) heat pump is recommended.
How many kWh of electricity does a 8.4 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 4,322 kWh of electricity per year to deliver 16,422 kWh of heat — saving 12,100 kWh/year compared to direct electric radiators.
Compare Other Home Sizes & Climate Zones
60 m² (646 ft²) Heat Pump100 m² (1076 ft²) Heat Pump120 m² (1292 ft²) Heat Pump140 m² (1507 ft²) Heat Pump160 m² (1722 ft²) Heat Pump180 m² (1938 ft²) Heat Pump200 m² (2153 ft²) Heat Pump250 m² (2691 ft²) Heat Pump300 m² (3229 ft²) Heat Pump80 m² in Nordic / Scandinavia80 m² in UK & Temperate Maritime80 m² in US North & Canada Cold80 m² in US Sunbelt & Mediterranean80 m² in Australia & Mild APAC