In Part One of this episode from the Green Architects' Lounge, we only scratched the surface. Now it's time to really dig in and decide if a ground-source heat pumpHome heating and cooling system that relies on the mass of the earth as the heat source and heat sink. Temperatures underground are relatively constant. Using a ground-source heat pump, heat from fluid circulated through an underground loop is transferred to and/or from the home through a heat exchanger. The energy performance of ground-source heat pumps is usually better than that of air-source heat pumps; ground-source heat pumps also perform better over a wider range of above-ground temperatures. system is right for you, and if so, to start planning for it.
In Part Two of the podcast, we discuss:
A tale of two houses: Chris shares a story of two houses—one a success, and one that had to abandon using a ground-source heat pump
Rule of thumb for flow: 3 gal. per minute per ton of heating/cooling