Links

www.heatbloc.net
Information about Radiant Heat Barrier

http://www1.eere.energy.gov/femp/pdfs/FTA_Glazings.pdf
U.S. Department of Energy Report on Window Film

http://www.eere.energy.gov/
U.S. Department of Energy - Energy Efficiency and Renewal Energy

http://www.austinenergy.com/Energy%20Efficiency/Programs/Rebates/index.htm
Austin Energy Rebate Program