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eng.geothermal-heat-pump-sizing Calculator
Calculates ground-source heat pump system sizing from building loads, COP, and ground loop thermal properties. Ground-source heat pump COP of 4–5 is approximately twice that of air-source heat pumps in cold climates — the ground temperature stability removes the performance degradation in extreme cold.
Inputs
Heating Load Btu
Applied force or weight (N or kN). Divide into dead load (permanent) and live load (variable — people, wind, etc.).
Cooling Load Btu
Applied force or weight (N or kN). Divide into dead load (permanent) and live load (variable — people, wind, etc.).
Cop Heating
Reference formula or conversion factor shown for context.
Cop Cooling
Reference formula or conversion factor shown for context.
Loop Length Ft Per Ton
Linear measurement. Ensure consistent units: 1 m = 1,000 mm = 3.281 ft.