Heat Pump Sizing for 404 m² (4,349 sq ft) — Nordic / Scandinavia (-20°C Design, SE/NO/FI/DK)
Thermal heat loss calculation, recommended heat pump capacity (kW, BTU/h & HVAC Tons), SCOP efficiency, and annual electricity consumption.
Recommended Heat Pump30.6 kW104,411 BTU/h (8.7 Tons)
Annual Electricity Usage22,926 kWh/yrDelivers 77,948 kWh Heat (SCOP 3.4)
Savings vs Direct Electric55,022 kWh/yrSpecific Load: 74.2 W/m²
Electrical Circuit (230V)70 A BreakerPeak Compressor Input: 11.77 kW
Thermal & Electrical Specification Table (404 m² / 4,349 sq ft)
| Heated Floor Area | 404 m² (4,349 sq ft) |
| Climate Zone & Design Outdoor Temp | Nordic / Scandinavia (-20°C Design, SE/NO/FI/DK) |
| Building Insulation Envelope | Standard Double-Glazed Insulation (55 W/m² Base) (74.2 W/m² Peak) |
| Peak Space Heating Load | 29.98 kW Thermal |
| Recommended Heat Pump Output (Incl. DHW) | 30.6 kW (104,411 BTU/h · 8.7 Tons) |
| Seasonal Coefficient of Performance (SCOP) | 3.4 (340%–450% Seasonal Efficiency) |
| Annual Heat Demand vs Electricity Consumed | 77,948 kWh Heat → 22,926 kWh Electricity |
Frequently Asked Questions
What kW size heat pump do I need for a 404 m² (4349 sq ft) house?
For a 404 m² (4349 sq ft) building with Standard Double-Glazed Insulation (55 W/m² Base) in Nordic / Scandinavia (-20°C Design, SE/NO/FI/DK), the peak space heating load is 29.98 kW (74.2 W/m²). Including domestic hot water allowance, a 30.6 kW (104,411 BTU/h / 8.7 Ton) heat pump is recommended.
How many kWh of electricity does a 30.6 kW heat pump use per year?
With a Seasonal Coefficient of Performance (SCOP) of 3.4 over 2600 full-load equivalent heating hours, the heat pump consumes approximately 22,926 kWh of electricity per year to deliver 77,948 kWh of heat — saving 55,022 kWh/year compared to direct electric radiators.
Compare Other Home Sizes & Climate Zones
60 m² (646 ft²) Heat Pump80 m² (861 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 Pump404 m² in Central Europe / DACH404 m² in UK & Temperate Maritime404 m² in US North & Canada Cold404 m² in US Sunbelt & Mediterranean404 m² in Australia & Mild APAC