Links

http://www.geoexchange.org/

http://ctheatingcooling.boomja.com/index.php?ITEM=123130

http://www.diychatroom.com/f17/

http://wiki.answers.com/Q/FAQ/1828

http://www.askmehelpdesk.com/heating-air-conditioning/

http://www.energyefficientchoices.com/forum/viewtopic.php?f=22&t=10

http://www.nrel.gov/analysis/collab_analysis/webforum_archive.html

http://www.appliance.net/2010/approved-energy-efficient-appliance-rebate-programs-1894

http://www.futurefriendly.com/SaveEnergy.aspx?gclid=CPPY7IaKyKICFQrKsgoddW-26w

http://www.usa.siemens.com/answers/en/index.htm?section=renewableindustry&stc=usccc021084