It costs a small fortune to run central air conditioning. A primary explanation for the high cost of home cooling has always been that ducts are notoriously prone to air leaks. The resulting energy loss often compromises overall system efficiency by a whopping 25 percent or more. Because of the deficiencies of traditional rigid metal ductwork, homeowners with central air probably pay more than is strictly necessary each and every month. With the Unico System, by contrast, there's no leakage, no wasted energy, and no superfluous expense, in large part because the mini ducts are encased in dual-layer insulation. You pay only for the climate control you enjoy, and no more.