IGSHPA Certified Residential Geothermal Designer (CRD)

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Which factor most significantly affects the simple payback period of a residential geothermal heat pump compared to a high-efficiency gas furnace and central AC system?

The local cost of electricity versus natural gas and the heating/cooling load of the home The color of the heat pump cabinet The brand of the thermostat used The number of bedrooms in the home

Correct Answer:

The local cost of electricity versus natural gas and the heating/cooling load of the home

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