It's kind of like a lightbulb. It just depends on your usage habits. In fact, I've not had one go out on me, but they will develop a burning taste over time. Sometimes it will wash out with a PGA bath, sometimes you won't be able to get rid of it. Supposedly, the low res atomizers will pop, just like a lightbulb. I've only just picked up my first low res yesterday. Every style of atomizer has it's pros and cons.