Heat Pump Sizing for 492 m² (5,296 sq ft) — US North & Canada Cold (-18°C Design, NY/IL/MI/ON)
Thermal heat loss calculation, recommended heat pump capacity (kW, BTU/h & HVAC Tons), SCOP efficiency, and annual electricity consumption.
Recommended Heat Pump35.8 kW122,155 BTU/h (10.18 Tons)
Annual Electricity Usage24,123 kWh/yrDelivers 84,432 kWh Heat (SCOP 3.5)
Savings vs Direct Electric60,309 kWh/yrSpecific Load: 71.5 W/m²
Electrical Circuit (230V)80 A BreakerPeak Compressor Input: 13.26 kW
Thermal & Electrical Specification Table (492 m² / 5,296 sq ft)
| Heated Floor Area | 492 m² (5,296 sq ft) |
| Climate Zone & Design Outdoor Temp | US North & Canada Cold (-18°C Design, NY/IL/MI/ON) |
| Building Insulation Envelope | Standard Double-Glazed Insulation (55 W/m² Base) (71.5 W/m² Peak) |
| Peak Space Heating Load | 35.18 kW Thermal |
| Recommended Heat Pump Output (Incl. DHW) | 35.8 kW (122,155 BTU/h · 10.18 Tons) |
| Seasonal Coefficient of Performance (SCOP) | 3.5 (340%–450% Seasonal Efficiency) |
| Annual Heat Demand vs Electricity Consumed | 84,432 kWh Heat → 24,123 kWh Electricity |
Frequently Asked Questions
What kW size heat pump do I need for a 492 m² (5296 sq ft) house?
For a 492 m² (5296 sq ft) building with Standard Double-Glazed Insulation (55 W/m² Base) in US North & Canada Cold (-18°C Design, NY/IL/MI/ON), the peak space heating load is 35.18 kW (71.5 W/m²). Including domestic hot water allowance, a 35.8 kW (122,155 BTU/h / 10.18 Ton) heat pump is recommended.
How many kWh of electricity does a 35.8 kW heat pump use per year?
With a Seasonal Coefficient of Performance (SCOP) of 3.5 over 2400 full-load equivalent heating hours, the heat pump consumes approximately 24,123 kWh of electricity per year to deliver 84,432 kWh of heat — saving 60,309 kWh/year compared to direct electric radiators.
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