I've had this since 2008, when I bought it to run my sump pump in the event of a power outage. I run it once a month to keep everything clean, and just changed the oil for the first time. It kept things going during Irene, the recent NE snowstorm, and a recent 8 hour power failure. Reliable, but a bit noisy, but when I have it running at night, I want to be able to hear it so I know it is still working. If you don't have a generator and you have a basement that could flood, without at least a battery backup, you are a fool. Get one of these, or something like it.