The heat it puts off is pretty good, and the telescoping feature is really nice.  Unfortunately, within a couple of weeks of beginning to use it, the thermostat failed resulting in the heater turning off after five minutes, and requiring several minutes before it could be turned back on (regardless of how long it had been off).  When I contacted Fire Sense, they initially sent me a link to purchase a new one, then relented when I pointed out that I had just purchased it.  That would have been fine if the new thermostat were still working.  Unfortunately, it has now failed as well (a month after installing it).