1. Single Pane vs. Double Pane Windows Ryan Kirkland Tim Shuck Michelle Tomey Jonathan Yoshioka

2. Criteria  Average 2,500 Sq-Ft home  4 Ton Central A/C Unit  10 Windows  6900 kW/Yr usage  Billed at an average of $0.22/kWh  Southern California Edison provided energy  Retrofit style windows in both single and double pane analysis

3. Approach  Initial Investment Analysis  Installation  Window Cost  Maintenance  Pane Gas  Glass Replacement  Sealant  Energy Savings  Government Initiatives & Tax Credits  Heating/Cooling Costs  Service Factor/Life  Heat Flow & Transfer Resistance  R-Value Ratings  U-Value Ratings

4. Resources  Energy Star.gov  http://www.energystar.gov/index.cfm?fuseaction=fi nd_a_product.showProductGroup&pgw_code=WI http://www.energystar.gov/index.cfm?fuseaction=fi nd_a_product.showProductGroup&pgw_code=WI  Energy.ca.gov  Southern California Edison  www.sce.com www.sce.com