So far so good. Havent needed YET. I was covered in blown cellulose insulation on a Friday. Power went off 20mins prior to arriving at home to no power; 22hrs later it was restored. Needless to say, I was miserable because Im on a well and couldn't pump water and also had to toss from items out of the freezer. NEVER AGAIN!!! Additionally, this particular model was well reviewed and came highly recommended as the "best bang for the buck." Im a contractor, so..if need be I can load this thing up and take it with me as opposed to spending the almost 15K for a "stand by" that also required a separate company for tank installation since propane is the only choice of fuel, plus permits. This is a win win!!!
I recently tested it with propane fuel and it worked well. It powered all my devices that I plugged into it at the same time without any problems. The setup was also simple and the manual was really easy to follow.