Heat Pump Sizing for 218 m² (2,347 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 Pump10.8 kW36,851 BTU/h (3.07 Tons)
Annual Electricity Usage3,477 kWh/yrDelivers 15,300 kWh Heat (SCOP 4.4)
Savings vs Direct Electric11,823 kWh/yrSpecific Load: 46.8 W/m²
Electrical Circuit (230V)20 A BreakerPeak Compressor Input: 3.0 kW
Thermal & Electrical Specification Table (218 m² / 2,347 sq ft)
| Heated Floor Area | 218 m² (2,347 sq ft) |
| Climate Zone & Design Outdoor Temp | US Sunbelt & Mediterranean (TX/FL/CA/ES/IT) |
| Building Insulation Envelope | Standard Double-Glazed Insulation (55 W/m² Base) (46.8 W/m² Peak) |
| Peak Space Heating Load | 10.2 kW Thermal |
| Recommended Heat Pump Output (Incl. DHW) | 10.8 kW (36,851 BTU/h · 3.07 Tons) |
| Seasonal Coefficient of Performance (SCOP) | 4.4 (340%–450% Seasonal Efficiency) |
| Annual Heat Demand vs Electricity Consumed | 15,300 kWh Heat → 3,477 kWh Electricity |
Frequently Asked Questions
What kW size heat pump do I need for a 218 m² (2347 sq ft) house?
For a 218 m² (2347 sq ft) building with Standard Double-Glazed Insulation (55 W/m² Base) in US Sunbelt & Mediterranean (TX/FL/CA/ES/IT), the peak space heating load is 10.2 kW (46.8 W/m²). Including domestic hot water allowance, a 10.8 kW (36,851 BTU/h / 3.07 Ton) heat pump is recommended.
How many kWh of electricity does a 10.8 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 3,477 kWh of electricity per year to deliver 15,300 kWh of heat — saving 11,823 kWh/year compared to direct electric radiators.
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