Heat Pump Sizing for 316 m² (3,401 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 Pump15.4 kW52,547 BTU/h (4.38 Tons)
Annual Electricity Usage5,042 kWh/yrDelivers 22,185 kWh Heat (SCOP 4.4)
Savings vs Direct Electric17,143 kWh/yrSpecific Load: 46.8 W/m²
Electrical Circuit (230V)25 A BreakerPeak Compressor Input: 4.28 kW
Thermal & Electrical Specification Table (316 m² / 3,401 sq ft)
| Heated Floor Area | 316 m² (3,401 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 | 14.79 kW Thermal |
| Recommended Heat Pump Output (Incl. DHW) | 15.4 kW (52,547 BTU/h · 4.38 Tons) |
| Seasonal Coefficient of Performance (SCOP) | 4.4 (340%–450% Seasonal Efficiency) |
| Annual Heat Demand vs Electricity Consumed | 22,185 kWh Heat → 5,042 kWh Electricity |
Frequently Asked Questions
What kW size heat pump do I need for a 316 m² (3401 sq ft) house?
For a 316 m² (3401 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 14.79 kW (46.8 W/m²). Including domestic hot water allowance, a 15.4 kW (52,547 BTU/h / 4.38 Ton) heat pump is recommended.
How many kWh of electricity does a 15.4 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 5,042 kWh of electricity per year to deliver 22,185 kWh of heat — saving 17,143 kWh/year compared to direct electric radiators.
Compare Other Home Sizes & Climate Zones
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