⚡ Cu ρ (75°C): 0.0214 Ω·mm²/m 🔌 NEC / IEC Standards: NFPA 70 & IEC 60364 🇺🇸 US Grid Avg: $0.175/kWh 🇩🇪 DE Grid Avg: €0.345/kWh 🇸🇪 SE Elpris: 1.54 SEK/kWh 🇳🇴 NO Strøm: 1.17 NOK/kWh 🔩 Copper Ref: $9,650/t (2026-10-25)
❄️ Heat Pump & HVAC Thermal Load · EN 12831 & ACCA Manual J Reference

Heat Pump Sizing for 52 m² (560 sq ft) — US Sunbelt & Mediterranean (TX/FL/CA/ES/IT)

Thermal heat loss calculation, recommended heat pump capacity (kW, BTU/h & HVAC Tons), SCOP efficiency, and annual electricity consumption.

Recommended Heat Pump2.1 kW7,165 BTU/h (0.6 Tons)
Annual Electricity Usage528 kWh/yrDelivers 2,325 kWh Heat (SCOP 4.4)
Savings vs Direct Electric1,797 kWh/yrSpecific Load: 29.8 W/m²
Electrical Circuit (230V)6 A BreakerPeak Compressor Input: 0.58 kW

Thermal & Electrical Specification Table (52 m² / 560 sq ft)

Heated Floor Area52 m² (560 sq ft)
Climate Zone & Design Outdoor TempUS Sunbelt & Mediterranean (TX/FL/CA/ES/IT)
Building Insulation EnvelopeModern / New Build Insulation (35 W/m² Base) (29.8 W/m² Peak)
Peak Space Heating Load1.55 kW Thermal
Recommended Heat Pump Output (Incl. DHW)2.1 kW (7,165 BTU/h · 0.6 Tons)
Seasonal Coefficient of Performance (SCOP)4.4 (340%–450% Seasonal Efficiency)
Annual Heat Demand vs Electricity Consumed2,325 kWh Heat → 528 kWh Electricity

Frequently Asked Questions

What kW size heat pump do I need for a 52 m² (560 sq ft) house?

For a 52 m² (560 sq ft) building with Modern / New Build Insulation (35 W/m² Base) in US Sunbelt & Mediterranean (TX/FL/CA/ES/IT), the peak space heating load is 1.55 kW (29.8 W/m²). Including domestic hot water allowance, a 2.1 kW (7,165 BTU/h / 0.6 Ton) heat pump is recommended.

How many kWh of electricity does a 2.1 kW heat pump use per year?

With a Seasonal Coefficient of Performance (SCOP) of 4.4 over 1500 full-load equivalent heating hours, the heat pump consumes approximately 528 kWh of electricity per year to deliver 2,325 kWh of heat — saving 1,797 kWh/year compared to direct electric radiators.