I've been doing alot of research while designing a new house for my pond property and am interested in using a geothermal heat pump. There are many ways this can be done with using a closed loop system underground, an open loop system where the water is pulled from a well and discharged to a lake, river or POND. There is also a system where a closed loop of the HDPE pipe is sunk to the bottom of a pond or river. This is what I am most interested in, with the open loop my second choice. (I have 2 wells near the house location)
Has anyone constructed a system like this? The following article is very positive about this and there seems to be no downside.
http://www.waterfurnace.com/earth_loops.aspxThe tax incentives are also outstanding where there is a 30% rebate from the federal government and also rebates from states.
http://i39.photobucket.com/albums/e188/buzzworth/800px-Pond_Loop_Being_Sunk.jpgsean
