Duct Duct Goose...
“Ducts are used to distribute conditioned air throughout houses with forced-air heating and cooling systems. In typical houses, about 20% of the air that moves through the duct system is lost due to leaks, holes and poorly connected ducts. The result is an inefficient HVAC system, high utility bills, and difficulty keeping the house comfortable, no matter how the thermostat is set. See our Duct Sealing brochure (PDF, 1.31 MB) for more information on steps you can take to improve your home's duct system.”
