Heat Pump Sizing for 540 m² (5,813 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 Pump16.7 kW56,983 BTU/h (4.75 Tons)
Annual Electricity Usage5,485 kWh/yrDelivers 24,135 kWh Heat (SCOP 4.4)
Savings vs Direct Electric18,650 kWh/yrSpecific Load: 29.8 W/m²
Electrical Circuit (230V)30 A BreakerPeak Compressor Input: 4.64 kW
Thermal & Electrical Specification Table (540 m² / 5,813 sq ft)
| Heated Floor Area | 540 m² (5,813 sq ft) |
| Climate Zone & Design Outdoor Temp | US Sunbelt & Mediterranean (TX/FL/CA/ES/IT) |
| Building Insulation Envelope | Modern / New Build Insulation (35 W/m² Base) (29.8 W/m² Peak) |
| Peak Space Heating Load | 16.09 kW Thermal |
| Recommended Heat Pump Output (Incl. DHW) | 16.7 kW (56,983 BTU/h · 4.75 Tons) |
| Seasonal Coefficient of Performance (SCOP) | 4.4 (340%–450% Seasonal Efficiency) |
| Annual Heat Demand vs Electricity Consumed | 24,135 kWh Heat → 5,485 kWh Electricity |
Frequently Asked Questions
What kW size heat pump do I need for a 540 m² (5813 sq ft) house?
For a 540 m² (5813 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 16.09 kW (29.8 W/m²). Including domestic hot water allowance, a 16.7 kW (56,983 BTU/h / 4.75 Ton) heat pump is recommended.
How many kWh of electricity does a 16.7 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 5,485 kWh of electricity per year to deliver 24,135 kWh of heat — saving 18,650 kWh/year compared to direct electric radiators.
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