Heat Pump Sizing for 228 m² (2,454 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 Pump17.1 kW58,348 BTU/h (4.86 Tons)
Annual Electricity Usage5,611 kWh/yrDelivers 24,690 kWh Heat (SCOP 4.4)
Savings vs Direct Electric19,079 kWh/yrSpecific Load: 72.2 W/m²
Electrical Circuit (230V)30 A BreakerPeak Compressor Input: 4.75 kW
Thermal & Electrical Specification Table (228 m² / 2,454 sq ft)
| Heated Floor Area | 228 m² (2,454 sq ft) |
| Climate Zone & Design Outdoor Temp | US Sunbelt & Mediterranean (TX/FL/CA/ES/IT) |
| Building Insulation Envelope | Older Uninsulated Building (85 W/m² Base) (72.2 W/m² Peak) |
| Peak Space Heating Load | 16.46 kW Thermal |
| Recommended Heat Pump Output (Incl. DHW) | 17.1 kW (58,348 BTU/h · 4.86 Tons) |
| Seasonal Coefficient of Performance (SCOP) | 4.4 (340%–450% Seasonal Efficiency) |
| Annual Heat Demand vs Electricity Consumed | 24,690 kWh Heat → 5,611 kWh Electricity |
Frequently Asked Questions
What kW size heat pump do I need for a 228 m² (2454 sq ft) house?
For a 228 m² (2454 sq ft) building with Older Uninsulated Building (85 W/m² Base) in US Sunbelt & Mediterranean (TX/FL/CA/ES/IT), the peak space heating load is 16.46 kW (72.2 W/m²). Including domestic hot water allowance, a 17.1 kW (58,348 BTU/h / 4.86 Ton) heat pump is recommended.
How many kWh of electricity does a 17.1 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 5,611 kWh of electricity per year to deliver 24,690 kWh of heat — saving 19,079 kWh/year compared to direct electric radiators.
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