Same -- mine's at 2.5 years and the only issue I ever had was self-inflicted when I flooded the external circuit board and fried it.Really big fan of my Tunze ozmolator nano. It has been rock solid for going on 2 years (which I know isn't that long, but still)...
Roger at Tunze repaired for free and only charged return shipping,,, which I didn't really end up paying for since I bought a spare pump at the same time.