Radiant heating is all about energy efficiency. Forced-air systems are notoriously inefficient, in part because air ducts leak—often enough to diminish efficiency by over 20 percent. Plus, if and when warm air reaches the living space, it soon ends up, not where you can feel it, but hovering near the ceiling. By minimizing the heat loss associated with forced-air, radiant heating maximizes energy savings. But while homeowners appreciate lower bills, they truly love radiant for another reason: It's even, "everywhere" warmth that arrives silently and without allergy-causing dust.