A ground source heat pump requires 76 kW to provide 70000 BT

A ground source heat pump requires 7.6 kW to provide 70,000 BTU/hr to a residential heating system. The Energy Efficiency Ratio (EER) of this system is 9.20 8.64 2.70 10.8

The EER is the ratio of the heating capacity (in British thermal units [Btu] per hour) to the power input (in watts)

70000/7600=9.21