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❄️ Heat Pump & HVAC Thermal Load · EN 12831 & ACCA Manual J Reference

Heat Pump Sizing for 532 m² (5,726 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 Pump59.4 kW202,681 BTU/h (16.89 Tons)
Annual Electricity Usage40,313 kWh/yrDelivers 141,096 kWh Heat (SCOP 3.5)
Savings vs Direct Electric100,783 kWh/yrSpecific Load: 110.5 W/m²
Electrical Circuit (230V)125 A BreakerPeak Compressor Input: 22.0 kW

Thermal & Electrical Specification Table (532 m² / 5,726 sq ft)

Heated Floor Area532 m² (5,726 sq ft)
Climate Zone & Design Outdoor TempUS North & Canada Cold (-18°C Design, NY/IL/MI/ON)
Building Insulation EnvelopeOlder Uninsulated Building (85 W/m² Base) (110.5 W/m² Peak)
Peak Space Heating Load58.79 kW Thermal
Recommended Heat Pump Output (Incl. DHW)59.4 kW (202,681 BTU/h · 16.89 Tons)
Seasonal Coefficient of Performance (SCOP)3.5 (340%–450% Seasonal Efficiency)
Annual Heat Demand vs Electricity Consumed141,096 kWh Heat → 40,313 kWh Electricity

Frequently Asked Questions

What kW size heat pump do I need for a 532 m² (5726 sq ft) house?

For a 532 m² (5726 sq ft) building with Older Uninsulated Building (85 W/m² Base) in US North & Canada Cold (-18°C Design, NY/IL/MI/ON), the peak space heating load is 58.79 kW (110.5 W/m²). Including domestic hot water allowance, a 59.4 kW (202,681 BTU/h / 16.89 Ton) heat pump is recommended.

How many kWh of electricity does a 59.4 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 40,313 kWh of electricity per year to deliver 141,096 kWh of heat — saving 100,783 kWh/year compared to direct electric radiators.