We have had one of these units now for 3 winters and it's still working good. We had a major natural gas outage where I live back in the winter of 2012 so I hurried out to Home Depot to buy one of these. It worked so well and has lasted so long I went and bought another one and that one has lasted 2 winters now as well! These things crank out some SERIOUS heat! Only word of caution, don't plus then into a power strip of any kind because the whole thing will get hot. We plugged ours directly into the wall and it's worked great now for years