I had a original H50 running for over five years straight without an issue. I eventually replaced it when I was redoing my system cooling. I figured it was going to die at some point... eventually. I wouldn’t worry about the 105, just keep on using it if you are happy with the performance.I've had my H105 for about 3 years now and was wondering about how much life it has left? I run my PC anywhere from 5 to 8 hours a day.