Mine made noise with the fan, turned out when I cleaned it I put the humidity tube to close to the fan and it was vibrating against it, moving it fixed that, now its running quiet. Right now its at the school for another school hatch, eggs go in this week. Its great for at school because its not stressful for the teacher, no cooked eggs, no turning by hand, no worry about filling internal resevoirs.
My last hatch was a duck hatch, 6 of 6 developed one quit but we had power go out at the stage where it quit, 5 hatched alive, 1 died later. 4 out of 6 in the end is good with shipped eggs (probably all 6 would have made it without the outage).
My hatch rates have been mostly decent, the only ones that did really bad were ones banged up in shipping (and no mater what incubator those go in its the same story). Its been running a lot without issues here, last year we had a lot of hatches with it. If the fan goes those are not hard to find, and would be an easy fix.