Radiant heating is a newfangled technology. On the contrary, its origins stretch all the way back to Ancient Rome, where closely controlled fires fed heat into air chambers situated under floors and behind walls. In the United States, centuries later, it was none other than Frank Lloyd Wright who helped reintroduce the technology. It's undergone continual development since then, gradually becoming a viable, if not superior, home heating alternative. Indeed, it may have taken a few thousand years for manufacturers to get right, but make no mistake, radiant heating has arrived.