I lived in a basement room in college that used a original suntwin unit like you described. It heated up the basement where i stayed very well. It is basically a couple of infrared lights, mirrors and fan with a thermostat . It did cut down on my bill immensely. I know that the design was sold by the original company a few years back and that they were shoddy for a while. I heard the orginal company is back making them now
Klint Deere