Well we looked at geothermal for our house (appx 1300sq ft) and all the estimates were in the 30-40K range and that would get the air to 55^F which is huge, but we'd still need some sort of additional mini-furnace on top of that. If/when it becomes more cost effective (most of the cost is drilling and installation of the ground loop), we'll reinvestigate it.
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Date: 2009-10-14 03:34 pm (UTC)