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

Heat Pump Sizing for 200 m² (2,153 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 Pump14.9 kW50,841 BTU/h (4.24 Tons)
Annual Electricity Usage9,806 kWh/yrDelivers 34,320 kWh Heat (SCOP 3.5)
Savings vs Direct Electric24,514 kWh/yrSpecific Load: 71.5 W/m²
Electrical Circuit (230V)30 A BreakerPeak Compressor Input: 5.52 kW

Thermal & Electrical Specification Table (200 m² / 2,153 sq ft)

Heated Floor Area200 m² (2,153 sq ft)
Climate Zone & Design Outdoor TempUS North & Canada Cold (-18°C Design, NY/IL/MI/ON)
Building Insulation EnvelopeStandard Double-Glazed Insulation (55 W/m² Base) (71.5 W/m² Peak)
Peak Space Heating Load14.3 kW Thermal
Recommended Heat Pump Output (Incl. DHW)14.9 kW (50,841 BTU/h · 4.24 Tons)
Seasonal Coefficient of Performance (SCOP)3.5 (340%–450% Seasonal Efficiency)
Annual Heat Demand vs Electricity Consumed34,320 kWh Heat → 9,806 kWh Electricity

Frequently Asked Questions

What kW size heat pump do I need for a 200 m² (2153 sq ft) house?

For a 200 m² (2153 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 14.3 kW (71.5 W/m²). Including domestic hot water allowance, a 14.9 kW (50,841 BTU/h / 4.24 Ton) heat pump is recommended.

How many kWh of electricity does a 14.9 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 9,806 kWh of electricity per year to deliver 34,320 kWh of heat — saving 24,514 kWh/year compared to direct electric radiators.