One day it simply stopped working. Emailed support and they said the fan was broken (although how they know that I'm not quite sure - the light saying Low Water simply wouldn't turn on), and because I was past my 1 year warranty (it had been a year and 3 months) I'd need to buy another fan.
And honestly, we rarely ran the thing. Would run it at nights in the winter, but spring through fall it basically sat on the shelf. Frustrating to pay a premium price for a mediocre product. Only thing it really has going for it is it's easy-ish to clean.