In a home with forced air, your comfort often depends on your location. It's warmest—too warm—directly next to the vent. But as you travel farther and farther away, it gets cooler and cooler, until you find yourself reaching either for a sweater or the thermostat. At the same time, with conditioned warm air always rising, upper floors tend to feel overly warm and lower floors not warm enough. Simply put, by heating the home unevenly, forced air makes the homeowner choose between enduring discomfort (thriftily) or turning up the heat (at a cost). With radiant heating, it's a whole different story, because the technology delivers from-the-ground-up warmth across every square of floor space, ensuring that from wall to wall, room to room, and bottom level to top story, the temperature doesn't waver.