Homeowner weighs the best choice for a heating and cooling system in Climate Zone 6
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[![][1]][2]
Dana is building a tight, well-insulated house in climate zone 6 and now faces a choice between 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. and an air-source heat pumpHeat pump that relies on outside air as the heat source and heat sink; not as effective in cold climates as ground-source heat pumps. for heating and cooling.
"After the 30% tax incentive, there is not much increase in cost for the geo system," Dana writes in a [Q&A post][3] at GreenBuildingAdvisor. "I am being told different stories in regard to system performance and longevity of equipment (depending on what side of the fence you're on)."
[1]: http://www.greenbuildingadvisor.com/sites/default/files/imagecache/blog-river/Ductless.jpg (Ductless minisplit)
[2]: http://www.greenbuildingadvisor.com/blogs/dept/qa-spotlight/air-source-or-ground-source-heat-pump
[3]: http://www.greenbuildingadvisor.com/community/forum/energy-efficiency-and-durability/24191/geothermal-vs-air-source-heat-pump
URL: http://www.greenbuildingadvisor.com/blogs/dept/qa-spotlight/air-source-or-ground-source-heat-pump
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