Bought as a replacement for an identical device that broke after about two years. The heater is easy to install to replace a broken heater, but cannot be used for a brand new installation as it has no body, front grille and thermostat knob. For a clean install, you'll need to buy the full build, which costs about $12 more. The heater has been working properly for several months now and the only criticism is that the thermostat has to be unscrewed almost all the way, otherwise it switches off too quickly (unlike the original unit).