I'm thinking about putting this into my family room, with the idea being that as my wife and I sit on the couch and read or watch TV, we can just have this heat radiating down on us, and don't need to keep the entire house so warm. We're thinking we would put one unit, perhaps 6 feet long, above the picture window behind the couch.

Does anyone have experience with these? Do they truly "radiate" almost-instant heat like the manufacturer claims?