How-To Videos
This video on air sealing your duct work helps identify some of the materials required for this project.
According to Advanced Energy, field studies of air distribution ducts in existing homes show that about 35% of a system’s cooling capacity is lost from duct leakage and from thermal losses due to poorly insulated ducts. (Attics and vented crawl spaces are not good places to locate HVAC equipment.). For more info visit:
http://www.advancedenergy.org/buildings/knowledge_library/heating_and_cooling/
http://www.energystar.gov/ia/partners/publications/pubdocs/HeatingCoolingGuide%20FINAL_9-4-09.pdf
And review these additional energy savings considerations to help you save on your electricity bill.