Mine crapped out after 15 minutes. In testing I would push the manual button and no fog just what sounded like the pump. Now the day after, I plugged it in and did some testing of it and it worked, the only thing I "think" might have happened was the feed tube is so long that it was curled up out of the fluid and the thermal protection kicked on (if it even has it). My problem is that I do not trust the fogger now and I am wondering if I should just get it replaced or further test it to try and duplicate the problem before I store it.