Installation requires a ton of remodeling. Especially if you live in an older home—one that was not built to accommodate networks of bulky air ducts—you may hate the idea of any project that would involve extensive, conspicuous remodeling, including adding dropped ceilings or soffits. For years, though, if you wanted to put in central air, you had no choice but to sacrifice the architectural integrity of your home. That's no longer the case. Thanks to high-velocity HVAC like The Unico System—technology designed around flexible, small-diameter ducts—central AC can be remarkably unobtrusive, fitting neatly into your home without diminishing the charm that made you fall in love with it in the first place.